TNPSC Combined Technical Service 2025: COMBINED TECHNICAL SERVICES EXAMINATION IN DIPLOMA / ITI LEVEL, MECHANICAL ENGINEERING
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COMBINED TECHNICAL SERVICE EXAMINATIONS
DIPLOMA / ITI STANDARD - 2025
TENTATIVE KEYS MARKED QUESTION PAPER
SUBJECT: MECHANICAL ENGINEERING (441)
1. Coining and embossing process comes under the classification of
|õn¯©õUPÀ ©ØÖ® ¦øh¨¦ ö\¯ÀøÓ ____________ ÁøP¨£õmiß RÌ
Á¸QÓx
(A) Squeezing (B) Drawing
AÊzxuÀ Áø uÀ
(C) Bending (D) Shearing
ÁøÍzuÀ öÁmkuÀ
(E) Answer not known
Âøh öu¯ÂÀø»
2. The removal of the desired shape from the edge of a plate is
J¸ umiß Âή¤¼¸¢x ¸®¤¯ ÁiÁzøu APØÖÁx
(A) Parting (B) Sitting
¤uÀ EmPõ¸uÀ
(C) Notching (D) Blanking
öÁmk® ußø© öÁÖø©¯õUSuÀ
(E) Answer not known
Âøh öu¯ÂÀø»
3. Find the part is which NOT a die accessories
øh £õP[PÒ CÀ»õu £Svø¯z PshԯĮ
(A) Pressure pads (B) Pitman
AÊzu vsk ¤m©ß
(C) Stops (D) Pilots
{Özu[PÒ Â©õÛPÒ
(E) Answer not known
Âøh öu¯ÂÀø»
3 441-Mechanical Engineering
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4. The method used for generating worm wheels are
Áõ® ÃÀPøÍ u¯õUP £¯ß£k® øÓ
(A) Axial hobbing (B) Radial hobbing
Aa_ íõ¨¤[ ÷ i¯À íõ¨¤[
(C) Tangential hobbing (D) Climb hobbing
öuõk{ø» íõ¨¤[ QÍ®¨ íõ¨¤[
(E) Answer not known
Âøh öu¯ÂÀø»
5. Choose the correct gear-finishing processes
\¯õÚ Q¯º ¤Û][ ö\¯ÀøÓø¯ ÷uºÄ ö\´¯Ä®
(A) Reaming (B) Boring
ª[ (xøÍ ^ õUPÀ) ÷£õ[ (xøÍ ö£uõUPÀ)
(C) Sawing (D) Burnishing
\õ°[ (AÖzuÀ) £ºÛæ[
(E) Answer not known
Âøh öu¯ÂÀø»
6. Direct indexing in gear cutting is called as
Q¯º öÁmku¼À ÷| i öÁmkuø» ____________ GÚ AøÇUP¨£kQÓx
(A) Shaving (B) Lapping
÷åÂ[ ÷»¨¤[
(C) Honing (D) Hobbing
ö©¸TmhÀ íõ¨¤[
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 4
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7. As per Indian standard marking system in grinding wheel is
WA46K5V17. The number 46 represents
C¢v¯ u {ø»¨£i Aø US® \UP zvÀ EÒÍ SÔ°k® øÓ
WA46K5V17 BS®. AvÀ 46 GßÓ Gs ____________ GߣøuU SÔUQÓx
(A) Abrasive (B) Grade
] õ´¨¦ u ®
(C) Structure (D) Grit size
Aø©¨¦ Pmøh AÍÄ
(E) Answer not known
Âøh öu¯ÂÀø»
8. Cutting tool used in a shaper is similar to a
÷娣À £¯ß£kzu¨£k® öÁmk® P¸Â, C¯¢v zøu¨
÷£õßÓx
(A) Drilling tool (B) Milling tool
xøÍ°k® P¸Â Aø US® P¸Â
(C) Lathe tool (D) Broaching tool
÷»z P¸Â ¦÷ õa][ P¸Â
(E) Answer not known
Âøh öu¯ÂÀø»
5 441-Mechanical Engineering
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9. The size of a lathe is specified by :
J¸ ÷»z G¢v zvß AÍÄ ____________ SÔ¨¤h¨£mkÒÍx
(i) Swing diameter
Fg\À Âmh®
(ii) Length of the bed
÷»z £kUøP°ß }Í®
(iii) Width of the bed
÷»z £kUøP°ß AP»®
(iv) Length between two centre
C sk ø©¯[PÐUS Cøh°»õÚ }Í®
(v) Size of the lead screw
½m ìU¹Âß AÍÄ
(A) (i), (ii) and (iii) (B) (ii), (iii) and (iv)
(i), (ii) ©ØÖ® (iii) (ii), (iii) ©ØÖ® (iv)
(C) (v), (iv) and (ii) (D) (iv), (ii) and (i)
(v), (iv) ©ØÖ® (ii) (iv), (ii) ©ØÖ® (i)
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 6
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10. Three types of feed movements used in slotting machine are
xøÍ°k® C¯¢v zvÀ £¯ß£kzu¨£k® ßÖ ÁøP¯õÚ Fmh
C¯UP[PÒ
(i) Linear
÷|¯À
(ii) Longitudinal
}Í©õÚ
(iii) Cross
SÖUS
(iv) Circular
Ámh ÁiÁ
(v) Transfer
£©õØÓ®
(vi) Vertical
ö\[Szx
(A) (i), (iii) and (v) (B) (ii), (iv) and (vi)
(i), (iii) ©ØÖ® (v) (ii), (iv) ©ØÖ® (vi)
(C) (vi), (v) and (i) (D) (iv), (iii) and (ii)
(vi), (v) ©ØÖ® (i) (iv), (iii) ©ØÖ® (ii)
(E) Answer not known
Âøh öu¯ÂÀø»
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11. Flute length of a twist drill is
J¸ v¸¨£¨ £°Ø]°ß _ÇÀ£õøu }Í®
(A) Equal to the overall length
ö©õzu }ÍzvØSa \©®
(B) Equal to the diameter of the drill
x ¨£nzvß ÂmhzvØS \©®
(C) Lesser than the overall length
ö©õzu }Ízøu ÂhU SøÓÄ
(D) Sum of flute length and diameters equal to the overall length
_ÇÀ£õøu }Í® ©õØÖ® Âmhzvß TmköuõøP²® ö©õzu
}ÍzvØS® \©®
(E) Answer not known
Âøh öu¯ÂÀø»
12. Find the limitations of broaching operation
¦÷ õa][ ö\¯À£õmiß Á ®¦PøÍU PshԯĮ
(A) Low tool cost
SøÓ¢u P¸Â ö\»Ä
(B) Poor surface finish
÷©õ\©õÚ ÷©Ø£ ¨¦ §a_
(C) Low accuracy
SøÓ¢u xÀ¼¯®
(D) Very large work piece cannot be broached
ªP¨ ö£¯ ÷Áø»¨ ö£õ¸øÍ öÁmh i¯õx
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 8
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13. Shape of the gear tooth cutter teeth may be
Q¯º £À Pmhº £ØPÎß ÁiÁ® ____________ C¸UP»õ®
(A) Involute
EÒÍhUQ¯ ÁøÍÄ
(B) Cycloida
ø\U÷Íõ°hÀ
(C) Involute (or) cycloida according to gear tooth profile
Q¯º £À _¯ÂÁ zvß £i CßÁõÀ³m (A) ø\U÷Íõ°hÀ
(D) Helical
öí¼PÀ
(E) Answer not known
Âøh öu¯ÂÀø»
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14. Match the following :
¤ßÁ¸ÁÚÁØøÓ¨ ö£õ¸zuÄ® :
(a) Plain milling 1. Less machining time
öÁØÖ Aø zuÀ SøÓÁõÚ G¢v ÷| ®
(b) Cam milling 2. Machining on a plain horizontal surface
÷P® ªÀ¼[ öÁØÖ Qøh©mh ÷©Ø£ ¨¤À
C¯¢v ©¯©õUPÀ
(c) Gang milling 3. Complex shape of milling
Tmk Aø zuÀ ]UP»õÚ Aø US® ÁiÁ®
(d) Profile milling 4. Used to produce square surfaces
_¯ÂÁ Aø zuÀ \x ÷©Ø£ ¨ø£ E¸ÁõUP¨ £¯ß£kQÓx
(e) Straddle milling 5. Universal dividing head are used in
milling machine
ìm õiÀ ªÀ¼[ Aø US® C¯¢v zvÀ E»PÍõ¯ ¤US®
uø» (Universal dividing head)
£¯ß£kzu¨£kQÓx
(a) (b) (c) (d) (e)
(A) 2 4 1 5 3
(B) 2 5 1 3 4
(C) 2 3 1 5 4
(D) 4 5 2 1 3
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 10
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15. The angle of swivelling the guide bar in lathe machine is
Pøh\À G¢v zvÀ ÁÈPõmi £møh _Ǿ® ÷Põn®
D d 2l
(A) tan (B) tan
2l D d
D d 2l
(C) cos (D) cos
2l D d
(E) Answer not known
Âøh öu¯ÂÀø»
16. The gas which is not used in plasma arc machining is
¤Íõì©õÂÀ G¢v zvÀ £¯ß£kzu¨£hõu Áõ²
(A) H2 (B) N2
(C) CO (D) O2
(E) Answer not known
Âøh öu¯ÂÀø»
11 441-Mechanical Engineering
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17. Wear ratio in EDM process is
EDM ö\¯ÀøÓPÎÀ ÷u´©õÚ ÂQu®
(A) Volume of work material removed/volume of electrode
consumed
APØÖ® ÷Áø»¨ ö£õ¸Îß AÍÄ/~P ¨£k® ªßøÚ°ß AÍÄ
(B) Volume of electrode consumed/volume of work material
removed
~P ¨£k® ªßøÚ°ß AÍÄ/APØÖ® ÷Áø»¨ ö£õ¸Îß AÍÄ
(C) Volume of work material removed/power consumed
APØÖ® ÷Áø»¨ ö£õ¸Îß AÍÄ/~P ¨£k® \Uv
(D) Power consumed/volume of work material removed
~P ¨£k® \Uv/APØÖ® ÷Áø»¨ ö£õ¸Îß AÍÄ
(E) Answer not known
Âøh öu¯ÂÀø»
18. Which of the following is not a casting defect?
¤ßÁ¸ÁÚÁØÔÀ Gx Áõº¨¦ SøÓ£õk AÀ»
(A) Decarburization (B) Scab
Põº£øÚ }UP® ] [S
(C) Blow hole (D) Porosity
Fx SÇÀ ÷£õ÷ õ]mi
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 12
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19. In welding the material support provided at the root side of a weld
to aid in the control of penetration is called as
öÁÀi[QÀ, Fk¸ÁÀ SøÓ£õkPøÍU Pmk¨£kzu, öÁÀi[ ö\´¯¨£k®
ChzvÀ Ai¨£Sv°À, \¨÷£õºm ö\´ÁuØPõP J¸ ö£õ¸Ò
øÁUP¨£kQÓx. Ax CÆÁõÖ AøÇUP¨£kQÓx
(A) Weld face (B) Backing
öÁÀi[ P¨¦ ÷£UQ[
(C) Compacting (D) Strengthening
Põ®÷£Ui[ Á¾ø©¯õUQ
(E) Answer not known
Âøh öu¯ÂÀø»
20. Which of the following is not associated with welding?
RÌPshÁØÖÒ £ØÓøÁ¨¦hß öuõhº¦ CÀ»õux Gx?
(A) Goggles (B) Cross-cut saw
PsnõiPÒ SÖUS öÁmk ®£®
(C) Electrode holder (D) Spark lighter
Gö»U÷ õk ¤i¨£õß w¨ö£õÔ ø»mhº
(E) Answer not known
Âøh öu¯ÂÀø»
21. A carburizing flame is one in which there is an excess of
Põº£ø ][ _hº Gߣx AvP¨£i¯õÚ ____________ EÒÍ JßÓõS®
(A) Oxygen (B) Hydrogen
BU]áß øím áß
(C) Acetylene (D) Argon
A]mi¼ß BºPõß
(E) Answer not known
Âøh öu¯ÂÀø»
13 441-Mechanical Engineering
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22. In powder metallurgy, the process of heating the green compact to a
temperature below the sintering temperature is
yÒ E÷»õP¯¼À, J¸ AÊzu¨£mh Qß Põ®£õUøh ]ßh[ öÁ¨£
{ø»USU R÷Ç öÁ¨£¨£kzxÁx GÆÁõÖ AøÇUP¨£kQÓx?
(A) Blending (B) Compacting
P»zuÀ _¸USuÀ
(C) Presintering (D) Sintering
ß unØÓÀ unØÓÀ
(E) Answer not known
Âøh öu¯ÂÀø»
23. Which of the following layouts is more suitable for manufacture of
aircrafts?
¤ßÁ¸® Aø©¨¦PÎÀ Gx ©õÚ u¯õ¨¦US ªPÄ® HØÓx
(A) Process layout
ö\¯ÀøÓ Aø©¨¦
(B) Product layout
u¯õ¨¦ Aø©¨¦
(C) Fixed position layout
{ø»¯õÚ {ø» Aø©¨¦
(D) None of the above
÷©ØTÔ¯ GxÄ® CÀø»
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 14
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24. Which of the following is the main constituent of moulding sand?
¤ßÁ¸ÁÚÁØÔÀ Áõº¨¦ ©n¼ß UQ¯ A[P® Gx?
(A) Silica (B) Alumina
]¼UPõ A¾ªÚõ
(C) Iron oxide (D) Clay
C¸®¦ BUø\k PΩs
(E) Answer not known
Âøh öu¯ÂÀø»
25. The most widely used plasticprocessing method in the industry is
öuõÈÀ xøÓ°À ªPÄ® £ Á»õP¨ £¯ß£kzu¨£k® ¤ÍõìiU ö\¯»õUP
øÓ
(A) Blow moulding
Fx Áõº¨¦ øÓ
(B) Injection moulding
Emö\¾zxuÀ Áõº¨¦ øÓ
(C) Extrusion
¤xUPÀ
(D) Thermo forming
öuº÷©õ £õºª[
(E) Answer not known
Âøh öu¯ÂÀø»
15 441-Mechanical Engineering
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26. The moment of resistance offered by the section is maximum, when
____________ value is maximum.
ö©õö©ßm B¨ ö ]ìhßì Gߣx ____________ AvP©õP C¸US® ÷£õx,
Auß ©v¨¦® AvP£m\©õP C¸US®
(A) Polar modulus (B) Section modulus
÷£õ»õº ©õk»ì ö\Uåß ©õk»ì
(C) Youngs modulus (D) Shear modulus
¯[ì ©õk»ì 毺 ©õk»ì
(E) Answer not known
Âøh öu¯ÂÀø»
27. For maximum bending stress, the radius of curvature of beam
should be
AvP£m\ ö£ßi[ ìmö ìUS, Auß Radius of Curvature BÚx
____________ C¸UP ÷Ásk®
(A) Maximum (B) Minimum
AvP©õP SøÓÁõP
(C) Equal (D) Average
\©©õP \ õ\¯õP
(E) Answer not known
Âøh öu¯ÂÀø»
28. The expression for bending equation is
ö£ßi[ \©ß£õmiß expression GßÚ?
M C M E
(A) (B)
E R y I y R
M E M E
(C) (D)
I l R I D y
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 16
Text of page 15
29. The slanting line in shear force diagram has to be referred as a
____________ in a bending moment diagram.
]¯º ÷£õºì Áø £hzvÀ J¸ \õ´¢u ÷Põk Gߣx, ö£si[ ö©õö©ßm
Áø £hzvÀ ____________ BP SÔUP¨£k®
(A) Arc (B) Parabola
BºU £ Áøͯ® (÷£ ÷£õ»õ)
(C) Ellipse (D) Hyperbola
G¼¨ì øí£º÷£õ»õ
(E) Answer not known
Âøh öu¯ÂÀø»
30. The bending moment causing concavity upwards will be taken as
____________ bending moment.
ö£si[ ö©õö©ßm BÚx ÷©À÷|õUQ¯ concavity (SÈ¢u ußø©)
HØ£kzvÚõÀ, Ax ____________ ö£ßi[ ö©õö©ßm BP P¸u¨£k®.
(A) Negative (B) Positive
ö|PiÆ £õêiÆ
(C) Minimum (D) Maximum
SøÓÁõÚ AvP©õÚ
(E) Answer not known
Âøh öu¯ÂÀø»
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31. In overhanging beam, the bending moment is ____________ between
the two supports.
J¸ }miUP¨£mh ¥ªÀ (overhanging beam) C sk \¨÷£õºm Cøh°À,
ö£si[ ö©õö©ßm BÚx ____________ BP C¸US®
(A) Zero (B) Positive
§ä⯮ £õêiÆ
(C) Negative (D) Maximum
ö|PiÆ AvP©õP
(E) Answer not known
Âøh öu¯ÂÀø»
32. A simply supported beam carrying an uniformly distributed load
(UDL) for the entire length, then the maximum bending is
J¸ ]®¨Î \¨÷£õºm ¥ªß Auß Ê }ÍzvØS® ^ õÚ £ ÁÀ ÷»õk
(UDL) C¸¢uõÀ Auß AvP£m\ ö£si[ ö©õö©ßm BS®
(A) Wl2 /8 (B) w l /4
(C) wl (D) w l 2 / 2
(E) Answer not known
Âøh öu¯ÂÀø»
33. Bending moment at the free end of the simply supported beam is
J¸ ]®¨Î \¨÷£õºm ¥ªß øÚPÎÀ Auß ö£si[ ö©õö©sm
____________ BP C¸US®.
(A) Maximum (B) Minimum
AvP® SøÓÄ
(C) Zero (D) Average value
§ä⯮ \ õ\ AÍÄ
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 18
Text of page 17
34. What is the deflection of the spring when the applied load is 500 N
and stiffness in 20 N/mm?
£¯ß£kzu¨£k® ÷»õk = 500 N ©ØÖ® öPmizußø© (stiffness)
20 N/mm BP C¸¢uõÀ, A¢u _¸Îß Â»PÀ (deflection) ©v¨¦ GßÚ?
(A) 40 mm (B) 50 mm
(C) 25 mm (D) 25 cm
(E) Answer not known
Âøh öu¯ÂÀø»
35. The Maximum shear stress developed in the plates of laminated
spring is
£møhÂÀ (laminated springs) umiÀ HØ£k® AvP£m\ shear stress
UPõÚ `zv ®
3wl 3wl 2
(A) (B)
2 n bt 2 4nbt 2
bd 3 w wl
(C) (D)
12 l n bt 2
(E) Answer not known
Âøh öu¯ÂÀø»
19 441-Mechanical Engineering
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36. The pitch between two adjacent turns is small in helical springs,
then it is called as
C sk Akzukzu _ÇÀPÐUS Cøh÷¯¯õÚ ¤ma SøÓÁõP C¸¢uõÀ
Ax _________ GÚ AøÇUP¨£kQÓx.
(A) Close-coiled helical springs
ö|¸UP©õP _¸sh `ÇÀ ì¤[
(B) Open-coiled helical springs
vÓ¢u _¸sh `ÇÀ ì¤[
(C) Small-coiled helical springs
]Ô¯ _¸sh `ÇÀ ì¤[
(D) Laminated springs
÷»ª÷Úmhm ì¤[
(E) Answer not known
Âøh öu¯ÂÀø»
37. Torque equation in terms of polar moment of inertia is given by
ÖUSa \©ß£õk (Torque equation) Gߣx polar moment of inertia
ÂÀ
T s C T s C
(A) (B)
J R l R J l
T R T E C
(C) (D)
C l M Y l
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 20
Text of page 19
38. Torque transmitted by the hollow circular shaft in T
Hollow Ámh ÁiÁz usiÀ PhzuU Ti¯ v¸¨¦ Âø\ (Torque) BÚx
T
D4 d4 D4 d4
(A) (B)
6 D 16 D
D4 d4 D4 d4
(C) (D)
32 D 32 D
(E) Answer not known
Âøh öu¯ÂÀø»
39. The change in volume of a thin cylindrical shell in given by V
ö©À¼¯ E¸øÍ°ß £¸©ß AÀ»x PÚ AÍÄ ©õØÓzvß `zv ® V
pd 5
(A) V 2e1 e2 (B)
2tE 2 m
pdV 5 1
(C) V 2 e2 e1 (D)
2tE 2 m
(E) Answer not known
Âøh öu¯ÂÀø»
40. In thin cylindrical shell, the two principal stresses are
J¸ ö©À¼¯ E¸øÍ°ß, C sk ußø©¯õÚ AÊzu[PЮ _________
BS®.
(A) Tensile (B) Compressive
öhßøéÀ P®¨ ]Æ
(C) Torsional (D) Bending
hõº\Úì ö£ßi[
(E) Answer not known
Âøh öu¯ÂÀø»
21 441-Mechanical Engineering
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41. Moment of inertia of a hollow circular section is
J¸ EÒÏhØÓ Ámh¨ £Sv°ß (hollow circular section) Moment of
inertia Gߣx
(A) D4 (B) D4 d4
64 64
(C) D3 d3 (D) D3
32 32
(E) Answer not known
Âøh öu¯ÂÀø»
42. The axis of reference of plane figures, is generally taken as the
lowest line for calculating
Plane figures ß ö\ßm õ´k PnUQkÁuØS A¢u E¸Ázvß
RÌ©mhU÷Põk GuØS Buõ ©õP GkzxUöPõÒͨ£kQÓx.
(A) x (B) y
x y
(C) z (D) x , y, z values
z x , y, z ¦ÒÎPÒ
(E) Answer not known
Âøh öu¯ÂÀø»
43. In stress-strain diagram, _________ is the point where there is an
appreciable elongation without any corresponding increase in load.
Stress-strain Áø £hzvÀ, Gߣx _ø©°À G¢u AvP¨¦®
CÀ»õ©À Po\©õÚ AÍÂÀ }ÍÁõUQÀ ©õØÓ® HØ£k® ¦ÒίõS®.
(A) Elastic point (B) Yield point
G»õìiU £õ°ßm DÀk £õ°ßm
(C) Upper limit of fracture (D) Lower limit of fracture
AvP£m\ ÔÄ Á¼ø© SøÓ¢u £m\ ÔÄ Á¼ø©
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 22
Text of page 21
44. The material property which is considered in designing IC Engines,
boilers and turbines is
IC CßâßPÒ, öPõvP»ßPÒ ©ØÖ® hºø£ßPøÍ ÁiÁø©US® ÷£õx
P¸zvÀ öPõÒͨ£k® J¸ £s¦ _________ BS®.
(A) Resilience (B) Malleability
ö ]¼¯ßì ÷©À¯¤Îmi
(C) Creep (D) Fatigue
U¨ Lö£miU
(E) Answer not known
Âøh öu¯ÂÀø»
45. Volumetric strain of a cylindrical rod subjected to an axial load is
An axial load US Em£kzu¨£mh J¸ E¸øÍ ÁiÁ ö£õ¸Îß (P®¤)
ÁõÀ²ö©mU ìmö °ß Gߣx
l d
(A) 1 2 (B) 1 2
l d
l d d l
(C) 2 (D) 2
l d d l
(E) Answer not known
Âøh öu¯ÂÀø»
46. The value of poissons ratio of steel is lies between
ìj¼ß £õ´\õßì ÂQu® AÍÄ Gߣx _________ C¸US®.
(A) 0.25 to 0.33 (B) 0.35 to 0.43
0.25 uÀ 0.33 Áø 0.35 uÀ 0.43 Áø
(C) 0.08 to 0.18 (D) 0.23 to 0.27
0.08 uÀ 0.18 Áø 0.23 uÀ 0.27 Áø
(E) Answer not known
Âøh öu¯ÂÀø»
23 441-Mechanical Engineering
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47. When the total extension of a 300 mm length of a rod is 0.2 mm,
then value of e is
300 ª.« }ÍÒÍ J¸ P®¤, 0.2 mm }Í® AvP©õÚõÀ (AÀ»x
}Í©õÚõÀ), Auß e ©v¨¦ GßÚ?
(A) 6.667 10 3 (B) 0.000667
(C) 0.00667 (D) 6.667 10 3
(E) Answer not known
Âøh öu¯ÂÀø»
48. 1N / mm 2 is equal to
J¸ N / mm 2 Gߣx
(A) 1 Pascal (B) 10 6 N / m2
1 £õìPÀ 10 6 N / m2
(C) 1kg f / cm2 (D) 1G N / m2
1kg f / cm2 1G N / m2
(E) Answer not known
Âøh öu¯ÂÀø»
49. _________ is the property of a material to absorb energy and to resist
shock and impact loads.
J¸ ö£õ¸Ò BØÓø» EÔg], Avºa] ©ØÖ® uõUP AÊzu[PøÍ
GvºUS® ußø© _________ GßÖ AøÇUP¨£kQÓx.
(A) Resilience (B) Creep
ö ]¼¯ßì Q¨
(C) Fatigue (D) Machinability
Lö£miU ö©]Ú¤¼mi
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 24
Text of page 23
50. In SI system, the unit of stress is
SI øÓ¨£i, AÊzuzvß A»S
(A) Pascal (B) mm 2
(C) kg f / cm2 (D) N / mm3
(E) Answer not known
Âøh öu¯ÂÀø»
51. The comfort of the human body depends on
©Ûu Eh¾UPõÚ {øÓÁõÚ _P® GuøÚ ö£õ¸zx EÒÍx
(1) Dry bulb temperature
E»º £À¨ öÁ¨£{ø»
(2) Relative humidity
D ¨£u®
(3) Air motion
PõØÖ C¯UP®
(4) Wet bulb temperature
D £À¨ öÁ¨£{ø»
(A) (1), (2) and (3) (B) (2) only
(1), (2) ©ØÖ® (3) (2) ©mk®
(C) (2) and (3) (D) (1), (2) and (4)
(2) ©ØÖ® (3) (1), (2) ©ØÖ® (4)
(E) Answer not known
Âøh öu¯ÂÀø»
25 441-Mechanical Engineering
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52. Find the COP of a refrigeration system if the work input is 80 kJ/kg
and refrigeration effect produced is 160 kJ/kg.
Kº Sκ£uÚ Aø©¨¤ß ÷Áø» EÒÏk 80 kJ/kg ©ØÖ® Auß Sκ£uÚ
ÂøÍÄ 160 kJ/kg GÛÀ Auß COP
(A) 2 (B) 0.5
(C) 4 (D) 0.25
(E) Answer not known
Âøh öu¯ÂÀø»
53. The human body feels comfortable when the heat stored in the body
is
Eh¼À ÷\ªUP¨£k® öÁ¨£® _________ C¸US® ÷£õx ©Ûu EhÀ
ö\ÍP¯©õP EnºQÓx.
(A) Positive (B) Negative
AvP©õP SøÓÁõP
(C) Zero (D) Unstable
\©©õP {ø»¯ØÓuõP
(E) Answer not known
Âøh öu¯ÂÀø»
54. For winter air conditioning relative humidity should not be greater
than
SκPõ» PõØÖ £uÚõUQ°À, J¨¦ D ¨£u® _________ ªPõ©À C¸UP
÷Ásk®.
(A) 40% (B) 60%
(C) 70% (D) 90%
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 26
Text of page 25
55. In winter air conditioning, the air is
Sκ Põ» PõØÖ £uÚõUQ°À, PõØÖ
(A) Cooled and humidified
Sιmh¨£kQÓx ©ØÖ® D ¨£umh¨£kQÓx
(B) Cooled and dehumidified
Sιmh¨£kQÓx ©ØÖ® D ¨£u® }UP¨£kQÓx
(C) Heated and humidified
öÁ¨£¨£kzu¨£kQÓx ©ØÖ® D ¨£umh¨£kQÓx
(D) Heated and dehumidified
öÁ¨£¨£kzu¨£kQÓx ©ØÖ® D ¨£u® }UP¨£kQÓx
(E) Answer not known
Âøh öu¯ÂÀø»
56. The stiochiometric air-fuel ratio of petrol is
ö£m÷ õ¼ß ÷ÁvÂøÚU TÖPÎß \¯õÚ ÂQu® (stiochiometric ratio)
(A) 14.7 : 1 (B) 17.4 : 1
(C) 12.6 : 1 (D) 16.2 : 1
(E) Answer not known
Âøh öu¯ÂÀø»
57. The most common firing order for four cylinder vertical SI engine is
|õßS ]¼shº ö\[Szx SI C¯¢v [PÐUS ªPÄ® ö£õxÁõÚ x¨£õUQ
`k (firing order) Áø\
(A) 1234 (B) 3 4 1 2
(C) 1342 (D) 4 3 2 1
(E) Answer not known
Âøh öu¯ÂÀø»
27 441-Mechanical Engineering
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58. The morse test is used to find the indicated power of
_________ C¯¢v zvß CßiUöPmhm £Áº PshÔ¯ ÷©õºì ÷\õuøÚ
£¯ß£kzu¨£kQÓx.
(A) Single cylinder petrol engine
JØøÓ ]¼shº ö£m÷ õÀ Gg]ß
(B) Single cylinder diesel engine
JØøÓ ]¼shº j\À Gg]ß
(C) Multi-cylinder engine
£» ]¼shº Gg]ß
(D) Steam engine
} õÂ Gg]ß
(E) Answer not known
Âøh öu¯ÂÀø»
59. Which of the following cycle has constant pressure heat addition and
constant volume heat rejection?
¤ßÁ¸® G¢u _ÇØ]°À {ø»¯õÚ PÚ AÍÄ öÁ¨£ { õP¨¤À
{ø»¯õÚ AÊzu® öÁ¨£U TmhÀ EÒÍx?
(A) Otto cycle (B) Rankine cycle
Km÷hõ _ÇØ] ÷ [Qß _ÇØ]
(C) Brayton cycle (D) Diesel cycle
¤ö ´hß _ÇØ] j\À _ÇØ]
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 28
Text of page 27
60. In a reciprocating engine with a cylinder dia of D and Stroke of L,
the cylinder volume is
D Âmh® ©ØÖ® L ì÷ õU }Í® öPõsh J¸ £©õØÓ C¯¢v zvß
]¼shß öPõÒÍÍÄ.
(A) D 2 L Clearance volume
4
D 2 L Qί ßì öPõÒÍÍÄ
4
(B) D 2 L Clearance volume
4
D 2 L Qί ßì öPõÒÍÍÄ
4
(C) D 2 L Clearance volume
4
D 2 L Qί ßì öPõÒÍÍÄ
4
(D) D 2 L Clearance volume
4
D 2 L Qί ßì öPõÒÍÍÄ
4
(E) Answer not known
Âøh öu¯ÂÀø»
61. A petrol engine has a swept volume is 0.02 m3 and clearance volume
is 0.002 m3, then its compression ratio.
J¸ ö£m÷ õÀ Gg]Ûß _èm PÚ AÍÄ 0.02 m3 ©ØÖ® Auß
Qί ßì PÚ AÍÄ 0.002 m3, ¤ßÚº Auß _¸UP ÂQu®.
(A) 10 (B) 9
(C) 8 (D) 11
(E) Answer not known
Âøh öu¯ÂÀø»
29 441-Mechanical Engineering
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62. The air standard efficiency of the Otto cycle is given by
Km÷hõ ø\UQÎß PõØÖ u {ø» ö\¯ÀvÓß ¤ßÁ¸©õÖ ÁÇ[P¨£kQÓx.
1
(A) 1 (B) 1 r
r
1 1
(C) 1 1
(D) 1 r
r
(E) Answer not known
Âøh öu¯ÂÀø»
63. In four stroke and two stroke IC engines, the cycle of operations is
completed in _________ and _________ revolutions respectively.
|õßS Ãa_ ©ØÖ® C sk Ãa_ IC C¯¢v [PÎß C¯UP _ÇØ] øÓ÷¯
_________ ©ØÖ® _________ _ÇØ]°À {øÓÁøhQÓx.
(A) 2 and 1 (B) 2 and 4
2 ©ØÖ® 1 2 ©ØÖ® 4
(C) 4 and 2 (D) 1 and 2
4 ©ØÖ® 2 1 ©ØÖ® 2
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 30
Text of page 29
64. Considering both Otto cycle and Diesel cycle
Km÷hõ ©ØÖ® j\À _ÇØ]PøÍ P¸zvÀ öPõÒP.
(i) Heat addition is done at constant volume
öÁ¨£a ÷\ºUøP {ø»¯õÚ AÍÄ öPõÒÍÍÂÀ ö\´¯¨£kQÓx
(ii) Heat rejection is done at constant volume
öÁ¨£ { õP¨¦ {ø»¯õÚ AÍÄ öPõÒÍÍÂÀ ö\´¯¨£kQÓx
Which of the following is correct
CÁØÔÀ Gx \¯õÚx.
(A) (i) true (ii) false (B) (i) false (ii) true
(i) \ (ii) uÁÖ (i) uÁÖ (ii) \
(C) (i) true (ii) true (D) (i) false (ii) false
(i) \ (ii) \ (i) uÁÖ (ii) uÁÖ
(E) Answer not known
Âøh öu¯ÂÀø»
31 441-Mechanical Engineering
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65. The intake charge of a 4 stroke diesel engine will consist of
EÔg_ Âø\°À |õßS Ãa_ j\À C¯¢v zuõÀ EÒ CÊUP¨£kÁx
(i) Air
PõØÖ
(ii) Fuel
Gö£õ¸Ò
(iii) Lubricating oil
©\S Gsön´
(A) (i) only (B) (i) and (ii) only
(i) ©mk® (i) ©ØÖ® (ii) ©mk®
(C) (i), (ii) and (iii) (D) (i) and (iii) only
(i), (ii) ©ØÖ® (iii) (i) ©ØÖ® (iii) ©mk®
(E) Answer not known
Âøh öu¯ÂÀø»
66. Which of the following is used to cancel the cutter radius
compensation?
Pmhº B ® CǨ¥møh zx ö\´¯ ¤ßÁ¸ÁÚÁØÔÀ Gx
£¯ß£kzu¨£kQÓx?
(A) G 40 (B) G 41
(C) G 42 (D) G 80
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 32
Text of page 31
67. The 4th axis of the milling machine is the
ªÀ¼[ C¯¢v zvß 4Áx Aa_ ________ BS®.
(A) Rotation about X-axis
X Aaø\¨ £ØÔ¯ _ÇØ]
(B) Rotation about Y-axis
Y Aaø\¨ £ØÔ¯ _ÇØ]
(C) Rotation about Z-axis
Z Aaø\¨ £ØÔ¯ _ÇØ]
(D) Combined rotation of X, Y and Z-axis
X, Y ©ØÖ® Z Aa]ß Tmk _ÇØ]
(E) Answer not known
Âøh öu¯ÂÀø»
68. The CNC program block
N020 G02 X45.0 Y25.0 R5.0
Indicates the following type of tool motion :
CNC { À öuõSv
N020 G02 X45.0 Y25.0 R5.0&À SÔ¨¤h¨£k® P¸Â C¯UP ÁøP
(A) Circular interpolation in clockwise
PiPõ vø\°À _ØÖ Cøh±k
(B) Circular interpolation in counter clockwise
PiPõ vø\US Gvºvø\°À _ØÖ Cøh±k
(C) Linear Interpolation
÷|¯À Cøh±k
(D) Rapid positioning
÷ÁP©õÚ {ø»©õØÓ®
(E) Answer not known
Âøh öu¯ÂÀø»
33 441-Mechanical Engineering
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69. The M code used to start the spindle clockwise rotation is
ì¤shø» PiPõ vø\°À _ØÖz öuõh[S® M SÔ±k
(A) M03 (B) M04
(C) M05 (D) M08
(E) Answer not known
Âøh öu¯ÂÀø»
70. Which of the following is the main limitation of linear interpolation?
÷|°¯À CøhU Po¨¤ß UQ¯ Á ®¦ GßÚ Gߣøu RÌPshÁØÔÀ
SÔ¨¤kP
(A) Time consuming
÷| zøu GkzxU öPõÒЮ
(B) Complex algorithm
]UP»õÚ ÁÈøÓ
(C) Not suitable for straight cuts
÷| õÚ öÁmkPÐUS HØÓuÀ»
(D) Not accurate for curves
ÁøÍÄPÐUS xÀ¼¯©õP CÀø»
(E) Answer not known
Âøh öu¯ÂÀø»
71. What is the simplest form of Interpolation in CNC machining?
¤ßÁ¸ÁÚÁØÔÀ CNC CÀ EÒÍ CøhUPo¨¤ß GÎø©¯õÚ ÁiÁ®
Gx?
(A) Circular Interpolation (B) Parabolic Interpolation
Ámh CøhUPo¨¦ £ Áøͯ CøhUPo¨¦
(C) Cubic Interpolation (D) Linear Interpolation
PÚ \x CøhUPo¨¦ ÷|¯À CøhUPo¨¦
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 34
Text of page 33
72. What is the use of M30 code in CNC machining?
CNC C¯¢v zvÀ M30 SÔ±k ¤ßÁ¸ÁÚÁØÔÀ GuøÚ SÔUQÓx
(A) Optional STOP (B) Spindle OFF
¸¨£ {Özu® _ÇÀ hUP®
(C) Coolant OFF (D) Program END and RESET
T»sm {Özu® { ø» izx «mhø©zuÀ
(E) Answer not known
Âøh öu¯ÂÀø»
73. What is the type of Material used in stereolithography (SLA), 3D
printing technology?
ìj÷¯õ ¼z÷uõQ L¤ (SLA) 3D G¢u ÁøP¯õÚ ö£õ¸mPøÍ
£¯ß£kzxQÓx?
(A) Liquid Resin
v Á ¤]ß
(B) Plastic Filament
¤ÍõìiU CøÇ
(C) Metal powder
E÷»õP ö£õi
(D) Paper sheet - ceramic slurry
PõQuz uõÒ
(E) Answer not known
Âøh öu¯ÂÀø»
74. The type of G-code that cancels tool length offset is
P¸Â }Í J¨£øÚ zx ö\´²® G SÔ±k
(A) G49 (B) G41
(C) G42 (D) G43
(E) Answer not known
Âøh öu¯ÂÀø»
35 441-Mechanical Engineering
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75. A system software which allows computers to communicate and
share data across a network is
PoÛPÒ J¸ ö|möÁõºU ÊÁx® u ÄPøÍ öuõhº¦ öPõÒÍÄ®,
£Q Ä® AÝ©vUS® J¸ Aø©¨¦ ö©ßö£õ¸Ò
(A) Operating system
B¨÷ mi[ ]ìh®
(B) Network operating system
ö|möÁõºU B¨÷ mi[ ]ìh®
(C) Wide area network
øÁm H¯õ ö|möÁõºU
(D) Utility network
³i¼mi ö|möÁõºU
(E) Answer not known
Âøh öu¯ÂÀø»
76. In the computer, RAM stands for
PoÛ°À RAM Gߣx GøuU SÔUQÓx?
(A) Read Access Memory
m BU\ì ö©©
(B) Random Assisted Memory
÷ sh® A]ì÷hm ö©©
(C) Random Access Memory
÷ sh® BU\ì ö©©
(D) Read Assisted Memory
m A]ì÷hm ö©©
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 36
Text of page 35
77. LSIC Means
LSIC Gߣx
(A) Large system integrated circuits
»õºä ]ìh® CshU÷ m÷hm \ºU³mì
(B) Large scale integrated circuits
»õºä ì÷PÀ CshU÷ m÷hm \ºU³mì
(C) Large system intelligent circuits
»õºä ]ìh® Csh¼öásm \ºU³mì
(D) Large scale intelligent circuits
»õºä ì÷PÀ Csh¼öásm \ºU³mì
(E) Answer not known
Âøh öu¯ÂÀø»
78. The method of identifying part families that uses the information
contained on production route sheets is
EØ£zv ÁÈzuhz uõÒPÎÀ EÒÍ uPÁÀPøÍ £¯ß£kzx® £Sv
Sk®£[PøÍ Aøh¯õÍ® Põq® øÓ
(A) Visual inspection
Põm] B´Ä
(B) Intuitive grouping
EÒÐnºÄ öuõSzuÀ
(C) Parts classification and coding
£SvPÒ ÁøP¨£õk ©ØÖ® SÔ±mk øÓ
(D) Production flow analysis
EØ£zv Kmh £S¨£õ´Ä
(E) Answer not known
Âøh öu¯ÂÀø»
37 441-Mechanical Engineering
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79. Which of the following is NOT related with the Part Design
Attributes in a Group Technology classification and coding system?
¤ßÁ¸ÁÚÁØÔÀ Gx SÊ öuõÈÀ~m£ ÁøP¨£õk ©ØÖ® SÔ±mk
Aø©¨¤À EÒÍ £Sv ÁiÁø©¨¦ £s¦PÐhß öuõhº¤À»õux?
(A) Length to diameter ratio
}Í® ©ØÖ® Âmh® Cøh÷¯¯õÚ ÂQu®
(B) Material types
ö£õ¸Ò ÁøPPÒ
(C) Basic External shape
Ai¨£øh öÁΨ¦Ó ÁiÁ®
(D) Operation sequence
ö\¯À£õmk Áø\
(E) Answer not known
Âøh öu¯ÂÀø»
80. _______ modelling used for designing car bodies and aerospace.
Põº ©ØÖ® BPõ¯ ©õÚ £õP[PøÍ ÁiÁø©US® ©õh¼[ øÓ
(A) Surface model (B) Wire frame model
\º÷£ì ©õhÀ Á¯º ¤÷ ® ©õhÀ
(C) Solid model (D) None of the above
\õ¼m ©õhÀ ÷©ØTÔ¯ GxÄ® CÀø»
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 38
Text of page 37
81. The element that appears at the bottom of the windows desktop
which is used to launch and manage task is
Âs÷hõì öhìUhõ¨¤ß R÷Ç ÷uõßÖ® EÖ¨¦ £oPøÍz öuõh[PÄ®
JÊ[Pø©UPÄ® £¯ß£kQÓx
(A) Task bar (B) Start menu
£s¨£mi öuõhUP £mi¯À
(C) Quick launch bar (D) Shortcut menu
Âø Ä öÁαmk¨ £møh SÖUSÁÈ £mi¯À
(E) Answer not known
Âøh öu¯ÂÀø»
82. The preferred Modelling method for creating complex freeform
shapes like car bodies or aircraft surfaces is
Põº £õP[PÒ AÀ»x ©õÚ ÷©Ø£ ¨¦PÒ ÷£õßÓ ]UP»õÚ ÁiÁ[PøÍ
E¸ÁõUSÁuØPõÚ HØÓ ÁiÁø©¨¦ øÓ
(A) Wire frame modeling (B) Surface modeling
P®¤ ÁiÁ ÁiÁø©¨¦ ÷©Ø£ ¨¦ ÁiÁø©¨¦
(C) Solid modeling (D) B-rep
vh ÁiÁø©¨¦ B-rep ÁiÁø©¨¦
(E) Answer not known
Âøh öu¯ÂÀø»
83. A common types of tool Magazines used in CNC Machining Centres
CNC C¯¢v ø©¯[PÎÀ ö£õxÁõP £¯ß£kzu¨£k® P¸Â ©õv
ÁøPPÒ
(A) Helical type magazine (B) Chain type magazine
_¸ÒÁiÁ ©õvPÒ \[Q¼ ÁøP ©õvPÒ
(C) Cycloidal type magazine (D) Parabolic type magazine
Ámh ÁiÁ ©õvPÒ £ Áøͯ ÁøP ©õvPÒ
(E) Answer not known
Âøh öu¯ÂÀø»
39 441-Mechanical Engineering
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84. Part families are formed based on
£õPU Sk®£[PÍõÚx Cuß Ai¨£øh°À E¸ÁõUP¨£kQÓx
(A) Similar shape (or) processing
ÁiÁ®, AÍÄ AÀ»x ö\¯»õUP JØÖø©
(B) Colour of parts
{Ózvß Ai¨£øh°À
(C) Similar price (or) customer
J¸ªzu Âø» AÀ»x ÁõiUøP¯õͺ
(D) Similar marketing strategy
J¸ªzu \¢øu°ß EzvPÒ
(E) Answer not known
Âøh öu¯ÂÀø»
85. The organization, that is Primarily Responsible for International
Engineering drawing standards
\ºÁ÷u\ ö£õÔ°¯À Áø £hzvß u {ø»PÐUS ußø©¯õÚ ö£õÖ¨¦
Aø©¨¦ Gx?
(A) ANSI (B) ISO
(C) ASTM (D) IEEE
(E) Answer not known
Âøh öu¯ÂÀø»
86. The type of technology commonly used in CIM for data exchange is
CIM&À u Ä £©õØÓzvØPõP ö£õxÁõP £¯ß£kzu¨£k® öuõÈÀ~m£®
(A) Wi-Fi (B) STEP
(C) HTML (D) TCP/IP
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 40
Text of page 39
87. The One Drive is mainly used in MS Office is
MS Office CÀ One Drive ußø©¯õP £¯ß£kÁx
(A) Editing documents
BÁn[PøÍz v¸zxuÀ
(B) Emailing
ªßÚg\À Aݨ¦uÀ
(C) Cloud storage
÷©PzvÀ ÷\ª¨¦
(D) Making presentations
ÂÍUP Põm]PøÍ E¸ÁõUSuÀ
(E) Answer not known
Âøh öu¯ÂÀø»
88. The basic unit of group technology is called
SÊ öuõÈÀ~m£® Ai¨£øh ußø© GÆÁõÖ AøÇUP¨£kQÓx
(A) Part family (B) Machine Cell
£õPU Sk®£® C¯¢v Th®
(C) Product Line (D) Work Station
u¯õ¨¦ Áø\ £o {ø»¯®
(E) Answer not known
Âøh öu¯ÂÀø»
89. The type of modelling is used to create realistic 3D shapes
Esø©¯õÚ 3D ÁiÁ[PøÍ E¸ÁõUP £¯ß£kzu¨£k® ©õvzußø©
ÁøP
(A) Wire frame modeling (B) Surface modeling
Á¯º L¤÷ ® ©õvzußø© ÷©Ø£ ¨¦ ©õvzußø©
(C) Solid modeling (D) Sketching
vh ©õvzußø© Áø £h®
(E) Answer not known
Âøh öu¯ÂÀø»
41 441-Mechanical Engineering
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90. Extrusion in 3D CAD modeling is used to
3D CAD ÁiÁø©¨¤À GUìm¹åß&ß UQ¯ £[S
(A) Creating Animation
~m£[PÐUS E°¹mkuÀ
(B) Creating a 2D sketch
2D ÁiÁzøu E¸ÁõUSuÀ
(C) Removing parts from the model
~m£ ÁiÁzuÀ ]Ö £SvPøÍ APØÖuÀ
(D) Adding thickness to a 2D to make 3D
2D ÁiÁzvÀ 3D BP ©õØÓ ui©ß ÷\ºzuÀ
(E) Answer not known
Âøh öu¯ÂÀø»
91. Which parameter is essential to calculate shaft power?
usk \Uvø¯U PnUQh G¢u AÍĸ AÁ]¯®
(A) Torque
ÖUS Âø\
(B) Speed
÷ÁP®
(C) Torque and Rotational speed
ÖUS Âø\ ©ØÖ® _ÇØ] ÷ÁP®
(D) Voltage and current
ªßÚÊzu® ©ØÖ® ªß÷Úõmh®
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 42
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92. A dead - weight pressure gauge used to _________ measuring
instruments.
öhm Gøh AÊzu©õÛ _________ AÍÂk® P¸Â¯õP £¯ß£kQÓx.
(A) Calibrate mass
{øÓø¯ AÍÃk ö\´¯
(B) Calibrate temperature
öÁ¨£{ø»ø¯ AÍÃk ö\´¯
(C) Calibrate pressure
AÊzuzøu AÍÃk ö\´¯
(D) Calibrate volume
AÍøÁ AÍÃk ö\´¯
(E) Answer not known
Âøh öu¯ÂÀø»
93. Semiconductor that are used to measure temperature are called
öÁ¨£{ø»ø¯ AÍÂh¨ £¯ß£k® SøÓUPhzvPÒ _________ GßÖ
AøÇUP¨£kQßÓÚ.
(A) Thermocouple (B) Thermistors
öuº÷©õ P¨¦À öuºªìhº
(C) Strain gauge (D) LVDT
v¦ AÍÂ LVDT
(E) Answer not known
Âøh öu¯ÂÀø»
43 441-Mechanical Engineering
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94. Load cells are used to measure
£ÐÁõÚ ö\ÀPÒ Gøu AÍÂh¨ £¯ß£kQßÓÚ.
(A) Force (B) Pressure
Âø\ AÊzu®
(C) Torque (D) Velocity
ÖUSÂø\ ÷ÁP®
(E) Answer not known
Âøh öu¯ÂÀø»
95. Drift in a measuring instrument is mainly caused by _________
variations and lack of component stability.
J¸ AÍÂk® P¸Â°À \ÖUPÀ UQ¯©õP _________ ©õÖ£õkPÒ ©ØÖ®
TÖ {ø»zußø© CÀ»õuuõÀ HØ£kQÓx.
(A) Internal pressure (B) Absolute pressure
EÒ AÊzu® Êø©¯õÚ AÊzu®
(C) Internal temperature (D) Ambient temperature
Em¦Ó öÁ¨£{ø» _ØÖ¨¦Ó öÁ¨£{ø»
(E) Answer not known
Âøh öu¯ÂÀø»
96. Hysteresis affects
îìöh]ì Gøu £õvUQÓx.
(A) Repeatability (B) Sensitivity
v¸®£a ö\´uSø© EnºvÓß
(C) Accuracy (D) Precision
xÀ¼¯® ~m£ußø©
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 44
Text of page 43
97. Which instrument is used to test straightness?
÷|º÷Põmiß ußø©ø¯ ÷\õvUP G¢u P¸Â £¯ß£kzu¨£kQÓx?
(A) Vernier calliper (B) Auto collimator
öÁºÛ¯º Põ¼£º Bm÷hõ ÷Põ¼÷©mhº
(C) Micrometer (D) Tool makers microscope
ø©U÷ õ «mhº lÀ ÷©UPºì ~s÷nõUQ
(E) Answer not known
Âøh öu¯ÂÀø»
98. What is the primary function of machine vision system?
C¯¢v £õºøÁ Aø©¨¤ß ußø© ö\¯À£õk GßÚ?
(A) Image storage
£h ÷\ª¨¦
(B) Visual Inspection and measurement
Põm] B´Ä ©ØÖ® AÍÃk
(C) Manual Quality control
øP÷¯k u U Pmk¨£õk
(D) Barcode printing
£õº÷Põk Aa]kuÀ
(E) Answer not known
Âøh öu¯ÂÀø»
45 441-Mechanical Engineering
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99. Which of the following is NOT a typical use of CMM in
manufacturing?
¤ßÁ¸ÁÚÁØÔÀ Gx EØ£zv°À CMM Cß ÁÇUP©õÚ £¯ß£õhõP
CÀø»?
(A) Dimensional Inspection
£©õn B´Ä
(B) CAD model Inspection
CAD ©õhÀ B´Ä
(C) Real-time video surveillance
{PÌ÷| Ãi÷¯õ PsPõo¨¦
(D) Statistical process control
¦ÒÎ ÂÁ ö\¯ÀøÓ Pmk£õk
(E) Answer not known
Âøh öu¯ÂÀø»
100. Which of the following comparator is non-contact type?
¤ßÁ¸® J¨¥mkPÎß Gx öuõhº¦ CÀ»õu ÁøPø¯a ÷\º¢ux?
(A) Johansson Mikrokator
÷áõíß\ß ø©U÷ õ÷Pmhº
(B) Mechanical optical comparator
C¯¢v Jΰ¯À J¨¥mi
(C) Sigma comparator
]U©õ J¨¥mi
(D) LVDT
LVDT
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 46
Text of page 45
101. Johanson Mikrokator is a type of __________ comparator.
÷áõíß\ß ø©U÷ õ÷Pmhº Gߣx J¸ ÁøP __________ J¨¥mk.
(A) Mechanical (B) Mechanical-optical
C¯¢v ¯À C¯¢v Jΰ¯À
(C) Electrical and electronic (D) Pneumatic
ªß\õ ® ©ØÖ® ªßÚq¯À PõØÔÚõÀ C¯UP¨£k®
(E) Answer not known
Âøh öu¯ÂÀø»
102. Distance between successive peaks that constitute the predominant
pattern is called as
¤ uõÚ ÁiÁzøu E¸ÁõUS® Akzukzu ]P [PÐUS Cøh°»õÚ y ®
CÆÁõÖ AøÇUP¨£kQÓx.
(A) Roughness (B) Wavelength
÷©Ø£ ¨¦ PiÚzußø© ÷©Ø£ ¨¦ Aø»ußø©
(C) Lay (D) Flaws
÷©Ø£ ¨¦ Aø©¨¦ vø\ ÷©Ø£ ¨¦ SøÓ£õk
(E) Answer not known
Âøh öu¯ÂÀø»
103. The maximum angle that can be set using a sine bar is limited to
ø\ß £møhø¯¨ £¯ß£kzv Aø©UPTi¯ AvP£m\ ÷Põn® GÆÁÍÄ
GßÖ Áø ¯ÖUP¨£mkÒÍx
(A) 15 (B) 30
(C) 45 (D) 60
(E) Answer not known
Âøh öu¯ÂÀø»
47 441-Mechanical Engineering
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104. __________ is the preferred instrument for measuring holes, grooves
and recesses.
xøÍPÒ, £ÒÍ[PÒ ©ØÖ® CøhöÁÎPøÍ AÍÂkÁuØS __________
]Ó¢u P¸Â¯õS®.
(A) Height Gauge (B) Depth Gauge
E¯ ©õÛ BÇ AÍÂ
(C) Micrometer (D) Bevel Protactor
ø©U÷ õ«mhº \õ´Ä }m]¨£õß
(E) Answer not known
Âøh öu¯ÂÀø»
105. The maximum and minimum permissible sizes acceptable for a
specific dimension is called as
J¸ SÔ¨¤mh £©õnzvØPõÚ AvP£m\ ©ØÖ® SøÓ¢u£m\
AÝ©vUP¨£mh AÍÄPÒ CøÁ GÚ AøÇP¨£kQßÓÚ
(A) Basic size (B) Limits of size
Ai¨£øh AÍÄ AÍÄ Á ®¦PÒ
(C) Tolerance (D) Allowance
£©õÚ \Q¨¦ußø© öPõk¨£ÚÄ
(E) Answer not known
Âøh öu¯ÂÀø»
106. When a set of readings of a measurement has a wide range it
indicates?
J¸ AÍÃmiß AÍÃkPÎß öuõS¨¦ £ ¢u Á ®ø£U
öPõsi¸US®÷£õx Ax SÔUQÓx.
(A) High Precision (B) High Accuracy
E¯º ~m£zußø© E¯º xÀ¼¯®
(C) Low Precision (D) Low Accuracy
SøÓÁõÚ ~m£zußø© SøÓÁõÚ xÀ¼¯®
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 48
Text of page 47
107. Precision can be related with the term
xÀ¼¯® Gߣx G¢u Áõºzøu²hß öuõhº¦øh¯x?
(A) Accuracy (B) Dimension and magnitude
xÀ¼¯® £©õÚ® ©ØÖ® AÍÄ
(C) Repeatability (D) Sensitivity
«sk® {PÌuPÄ EnºvÓß
(E) Answer not known
Âøh öu¯ÂÀø»
108. __________ is used for measuring angles of surfaces.
£ ¨¦PÎß ÷Põn[PøÍ AÍÂh __________ £¯ß£kzu¨£kQÓx.
(A) Auto collimator (B) Dial indicator
Bm÷hõ÷Põ¼÷©mhº h¯À Põmi
(C) Johansson Mikrokator (D) Reed type gauge
÷áõíß\ß ø©U÷ õ÷Pmhº |õnÀ ÁøP AÍÂ
(E) Answer not known
Âøh öu¯ÂÀø»
109. __________ is the instrument used to measure angles with an
attachment of a spirit level.
__________
Gߣx J¸ B ©mhzvß Cøn¨¦hß ÷Põnzøu AÍÂh¨
£¯ß£kzu¨£k® P¸Â¯õS®.
(A) Clinometer (B) Bevel protractor
QÎ÷Úõ«mhº \õ´Ä }m]¨£õß
(C) Slip gauge (D) Sine bar
켨 ÷Pä ø\ß £õº
(E) Answer not known
Âøh öu¯ÂÀø»
49 441-Mechanical Engineering
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110. Least count of a micrometer is
ø©U÷ õ«mhß SøÓ¢u£m\ GsoUøP
(A) 0.01 mm (B) 0.1 mm
(C) 0.05 mm (D) 0.5 mm
(E) Answer not known
Âøh öu¯ÂÀø»
111. __________ is a method of joining parts by force, without using
fasteners.
__________ L£õìöhÚºPøͨ £¯ß£kzuõ©À £»Á¢u©õP £õP[PøÍ
CønUS® J¸ øÓ
(A) Press fit (B) Force fit
AÊzu ö£õ¸zu® Á¼ø© ö£õ¸zu®
(C) Push fit (D) Sliding fit
uÒÐ ö£õ¸zu® \ÖUSuÀ ö£õ¸zu®
(E) Answer not known
Âøh öu¯ÂÀø»
112. Diameter of pin is 25 mm. Maximum and minimum allowed size is
25.05 mm and 24.95 mm. Calculate the tolerance zone
F]°ß Âmh® 25 ª.«. AvP£m\ ©ØÖ® SøÓ¢u£m\ AÝ©vUP¨£mh
AÍÄ 25.05 ª« ©ØÖ® 24.95 ª.« AÝ©v AÍÄ ©sh»zøuU SÔUPÄ®
(A) 0.05 mm (B) 0.05 mm
(C) 0.1 mm (D) 0.1 mm
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 50
Text of page 49
113. Select the correct symbol for concentricity
J¸ø©¨£õmiß \¯õÚ ]ßÚzøuz ÷uº¢öukUPÄ®
(A) (B)
(C) (D)
(E) Answer not known
Âøh öu¯ÂÀø»
114. Deviations in flat surfaces can be termed as
umøh¯õÚ £ ¨¦PÎÀ HØ£k® »PÀPøÍ CÆÁõÖ AøÇUP»õ®
(A) tolerance of straightness
÷|ºzv°ß AÝ©v AÍÄ
(B) tolerance in barrel form
¥¨ø£ ÁiÁzvß AÝ©v AÍÄ
(C) tolerance in lobed form
U÷Põn ÁiÁzvß AÝ©v AÍÄ
(D) tolerance in oval form
E¸øÍ ÷£õßÓ ÁiÁzvØPõÚ AÝ©v AÍÄ
(E) Answer not known
Âøh öu¯ÂÀø»
51 441-Mechanical Engineering
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115. Manufactures typically specify an instruments accuracy in term of
EØ£zv¯õͺPÒ ö£õxÁõP J¸ P¸Â°ß xÀ¼¯zøu Ai¨£øh°À
SÔ¨¤kQÓõºPÒ
(A) Limit of errors (B) Tolerance
¤øÇPÎß Á ®¦ \Q¨¦z vÓß Á ®¦
(C) Reliability (D) Repeatability
|®£Pzußø© «sk® {PÌuPÄ
(E) Answer not known
Âøh öu¯ÂÀø»
116. Depreciation of physical properties or assets are caused due to
{ø»a ö\õzxUPÎß ÷u´©õÚ® HØ£kÁuØSU Põ n®
(A) Wear and tear
÷u´©õÚ® ©ØÖ® QÈÄ
(B) Its good condition
|À» {ø»°À £ õ©UP¨£kQÓx
(C) Its non operative
ö\¯À£õmiÀ CÀ»õø©
(D) It is operative
ö\¯À£õmiÀ EÒÍx
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 52
Text of page 51
117. The equipment was purchased and installed with total cost of
Rs. 3,00,000. The estimated depreciation after 7 years was
Rs. 90,000. Determine annual rate of depreciation by straight line
method
C¯¢v ® öPõÒuÀ ö\´u ö©õzu ö\»Ä ¹. ßÖ C»m\® HÊ
BskPÐUS¨ ¤ÓS ©v¨¤h¨£mh «u ©v¨¦ ¹. 90,000 Bskz
÷u´©õÚz öuõøPø¯ ÷|º÷Põmk øÓ ÷u´©õÚU PnURmiß £i
PnUQkP.
(A) Rs. 35,000 (B) Rs. 40,000
¹. 35,000 ¹. 40,000
(C) Rs. 3,000 (D) Rs.30,000
¹. 3,000 ¹.30,000
(E) Answer not known
Âøh öu¯ÂÀø»
118. In Break-Even analysis the buying cost increases when
\©{ø» ÔĨ £S¨£õ´ÂÀ (¤÷ U&DÁß) Áõ[S® ö\»Ä G¨ö£õÊx
AvPUS®?
(A) Quantity decreases (B) Quantity increases
AÍÄ SøÓ²®÷£õx AÍÄ AvPUS®÷£õx
(C) Irrespective of quantity (D) XY analysis
AÍÄ GxÁõP C¸¢uõ¾® X-Y £S¨£õ´Ä
(E) Answer not known
Âøh öu¯ÂÀø»
53 441-Mechanical Engineering
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119. In various cost involved during manufacturing of a product the
factory cost is
J¸ ö£õ¸øÍ EØ£zv ö\´²® ÷£õx HØ£k® £À÷ÁÖ ö\»ÄPÎÀ,
öuõÈØ\õø» ö\»Ä Gߣx
(A) Prime cost +Factory overhead
ußø©a ö\»Ä + öuõÈØ\õø» ÷©»vPa ö\»Ä
(B) Direct material cost + Factory overhead
÷| i »¨ö£õ¸Ò ö\»Ä + öuõÈØ\õø» ÷©»vPa ö\»Ä
(C) Direct material cost + Direct labour cost
÷| i »¨ö£õ¸Ò ö\»Ä + ÷| iz öuõÈ»õͺ ö\»Ä
(D) Direct material cost + Administrative overhead
÷| i »¨ö£õ¸Ò ö\»Ä + {ºÁõP ÷©»vPa ö\»Ä
(E) Answer not known
Âøh öu¯ÂÀø»
120. Which one among the following is mainly concerned with continuous
improvement of companys operation
¤ßÁ¸ÁÚÁØÖÒ Gx UQ¯©õP J¸ {ÖÁÚzvß ö\¯À£õkPÎß
öuõhºa]¯õÚ ÷©®£õmkhß öuõhº¦øh¯x?
(A) Plan-Do-Check-Act cycle (B) Quality circle
PDCA _ÇØ] u Ámh® (QC)
(C) Total Quality control (D) ISO circle
Êzu U Pmk¨£õk (TQC) ISO Ámh®
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 54
Text of page 53
121. Which of the following statements are TRUE about safety stocks?
£õxPõ¨¦ C¸¨¦PÒ SÔzx ¤ßÁ¸® TØÖPÎÀ Gx Esø©?
(i) Safety stock is also called as buffer stock
£õxPõ¨¦ C¸¨¦ £L£º ìhõU GßÖ® AøÇUP¨£kQÓx
(ii) Safety stock is the stock needed to account for delays in
materials supply.
ö£õ¸Ò Â{÷¯õPzvÀ HØ£k® uõ©u[PøÍ \©õÎUPz ÷uøÁ¯õÚ
C¸¨¦, £õxPõ¨¦ C¸¨¦ BS®.
(iii) Safety stock is the stock needed to account for sudden increase
in demand due to rush orders.
Âø Ä BºhºPÒ Põ n©õP ÷uøÁ°À HØ£k® vjº AvP¨ø£
P¸zvÀ öPõÒÍz ÷uøÁ¯õÚ C¸¨¦, £õxPõ¨¦ C¸¨¦ BS®.
(A) (i) only (B) (i) and (ii) only
(i) ©mk® (i) ©ØÖ® (ii) ©mk®
(C) (i) and (iii) only (D) (i), (ii) and (iii)
(i) ©ØÖ® (iii) ©mk® (i), (ii) ©ØÖ® (iii)
(E) Answer not known
Âøh öu¯ÂÀø»
122. Do it right at the first time is the slogan of
uÀ øÓ°÷»÷¯ \¯õPa ö\´ Gߣx __________ Cß ÇUP®.
(A) Zero defect (B) Just in time
§ä⯠SøÓ£õk \¯õÚ ÷| zvÀ
(C) Total quality control (D) Quality circle
ö©õzu u U Pmk¨£õk u Ámh®
(E) Answer not known
Âøh öu¯ÂÀø»
55 441-Mechanical Engineering
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123. Break even analysis shows profit when
¤÷ U DÁß £S¨£õ´Ä __________ BP C¸US®÷£õx »õ£zøuU Põmk®.
(A) Sales revenue > total cost
ÂØ£øÚ Á¸Áõ´ > ö©õzu ö\»Ä
(B) Sales revenue = total cost
ÂØ£øÚ Á¸Áõ´ = ö©õzu ö\»Ä
(C) Sales revenue < total cost
ÂØ£øÚ Á¸Áõ´ < ö©õzu ö\»Ä
(D) Variable cost < fixed cost
©õÔ ö\»Ä < {ø»¯õÚ ö\»Ä
(E) Answer not known
Âøh öu¯ÂÀø»
124. In break-even analysis, total cost consists of
¤÷ U DÁß £S¨£õ´ÂÀ (break-even analysis) ö©õzu ö\»ÁõÚx
__________ öPõskÒÍx.
(A) Fixed cost
{ø»¯õÚ ö\»Ä
(B) Variable cost
©õÔ ö\»Ä
(C) Fixed cost + variable cost
{ø»¯õÚ ö\»Ä + ©õÔ ö\»Ä
(D) Fixed cost Variable cost
{ø»¯õÚ ö\»Ä ©õÔ ö\»Ä
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 56
Text of page 55
125. In ABC analysis a graph is plotted against __________ and
__________ in X and Y axis respectively?
ABC £S¨£õ´ÂÀ, J¸ Áø £h® Gߣx X Aa]À __________ ©ØÖ®
Y&Aa]À __________ UQØS Gv õP Áø ¯¨£kQÓx.
(A) Percent of total inventory cost, percent of item
ö©õzu \ US ö\»Âß \uÃu®, ö£õ¸Îß \uÃu®
(B) Percent of item, percent of total carrying cost
ö£õ¸Îß \uÃu®, ö©õzu C¸¨¦a ö\»Âß \uÃu®
(C) Percent of items, percent of total inventory cost
ö£õ¸Îß \uÃu®, ö©õzu \ US ö\»Âß \uÃu®
(D) Percent of total inventory cost, percent of total carrying cost
ö©õzu \ US ö\»Âß \uÃu®, ö©õzu C¸¨¦ ö\»Âß \uÃu®
(E) Answer not known
Âøh öu¯ÂÀø»
126. Always Better Control (ABC) analysis tool used in
G¨÷£õx® ]Ó¢u Pmk¨£õk (ABC) £S¨£õ´Ä P¸Â°ß £¯ß
(A) Depreciation (B) Work study
÷u´©õÚ® ÷Áø»US¯ ö\¯ÀøÓ
(C) Method study (D) Inventory control
ö\¯ÀøÓ ÁiÁ® \ USU Pmk¨£õk
(E) Answer not known
Âøh öu¯ÂÀø»
57 441-Mechanical Engineering
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127. The purpose of Economic Order Quantity (EOQ) is to determine the
optimum order size that will
EOQ ß ÷|õUP® Auß EP¢u Bºhº AÍøÁ wº©õÛ¨£uõS®. AuÚõÀ
Ax
(A) Maximize the total inventory cost
ö©õzu \ US ö\»øÁ AvP¨£kzxQÓx
(B) Minimize the total inventory cost
ö©õzu \ US ö\»øÁ SøÓUQÓx
(C) Not consider the inventory cost
\ US ö\»øÁ P¸zvÀ öPõÒÁvÀø»
(D) Consider the average minimum cost
\ õ\ SøÓ¢u£m\ ö\»øÁ P¸zvÀ öPõÒQÓx
(E) Answer not known
Âøh öu¯ÂÀø»
128. Motivation is
FUSÂzuÀ GßÓõÀ
(A) Forcing workers to achieve goal
£o¯õͺPøÍ ÁئÖzv AÀ»x Pmhõ¯¨£kzv C»USPøÍ
Aøh¯a ö\´Áx
(B) Psychological force influence workers to reach goal
£o¯õͺPÒ u[PÒ C»USPøÍ Aøh¯ ysk® £» EͯÀ
Põ oPÒ EÒÍÚ
(C) Directing workers by giving orders
£o¯õͺPÐUS Ezu ÄPøÍ Cmk ÁÈ |hzxuÀ
(D) Lack of motivation
FUPªßø©
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 58
Text of page 57
129. The following principles are suggested by Hendry Fayol except
öíßÔ L£õ¯À £¢xø zuøÁ AÀ»õux RÌPshÁØÔÀ Gx?
(A) Division of work (B) Scalar chain
÷Áø»¨ £[Rk AvPõ a \[Q¼
(C) Equity of treatment (D) Harmony
\©zxÁ©õÚ |hzøu |À¾ÓÄ (CnUP®)
(E) Answer not known
Âøh öu¯ÂÀø»
130. The managerial functions suggested by Hendry Fayol
öíßÔL£õ¯»õÀ ßö©õȯ¨£mh ÷©»õsø© ö\¯À£õkPÒ GߣÚ
(i) Planning
vmhªhÀ
(ii) Organising
J¸[QønzuÀ
(iii) Command
PmhøÍ°kuÀ
(iv) Scheduling
Põ» AmhÁøn°kuÀ
(A) (i), (ii) and (iii) (B) (ii), (iv)
(i), (ii) ©ØÖ® (iii) (ii), (iv)
(C) (i), (ii), (iv) (D) (iii) and (iv)
(i), (ii), (iv) (iii) ©ØÖ® (iv)
(E) Answer not known
Âøh öu¯ÂÀø»
59 441-Mechanical Engineering
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131. Which method is not related to job evaluation?
£o ©v¨¥mkhß öuõhº¤À»õu øÓ Gx?
(i) Ranking method
u Áø\ øÓ
(ii) Grading method
u ® ¤US® øÓ
(iii) Markov method
©õºU÷PõÆ øÓ
(iv) Factor comparison method
Põ o J¨¥mk øÓ
(A) (i) and (ii) only (B) (ii) and (iv) only
(i), ©ØÖ® (ii) ©mk® (ii), ©ØÖ® (iv) ©mk®
(C) (iii) only (D) (iii) and (ii) only
(iii) ©mk® (iii), ©ØÖ® (ii) ©mk®
(E) Answer not known
Âøh öu¯ÂÀø»
132. The cost of drawing, special tools and documents are called as
Áø uÀ, ]Ó¨¦ P¸ÂPÒ ©ØÖ® BÁn[PÎß Âø» __________ GÚ
AøÇUP¨£kQÓx.
(A) Direct material cost (B) Direct expenses
÷| i ö£õ¸Ò ö\»Ä ÷| i ö\»ÄPÒ
(C) Indirect expenses (D) Indirect material cost
©øÓP ö\»ÄPÒ ©øÓP ö£õ¸Ò ö\»Ä
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 60
Text of page 59
133. Respect, Prestige and status are grouped under.
©¯õøu, öPÍ Á® ©ØÖ® A¢uìx BQ¯øÁ _________ Cß RÌ
öuõSUP¨£mkÒÍÚ.
(A) Social needs (B) Safety needs
\Pz ÷uøÁPÒ £õxPõ¨¦z ÷uøÁPÒ
(C) Esteem needs (D) Physiological Needs
©¯õøuz ÷uøÁPÒ Eh¼¯À ÷uøÁPÒ
(E) Answer not known
Âøh öu¯ÂÀø»
134. High labour turnover in a company is a sign of _________ motivated
employees.
J¸ {ÖÁÚzvÀ AvP öuõÈ»õÍõº Á¸øP _________ E¢xuÀ ö£ØÓ
FȯºPÎß AÔSÔ¯õS®.
(A) Highly (B) Effectively
ªPÄ® vÓ®£h
(C) Efficiently (D) Poorly
vÓø©¯õÚ ÷©õ\©õÚ
(E) Answer not known
Âøh öu¯ÂÀø»
61 441-Mechanical Engineering
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135. While manufacturing a product Prime cost incurred is Rs.10,000.
Factory overhead is 50% of prime cost. When the general overhead
is 10% of factory cost, then find total cost.
J¸ ö£õ¸øÍ EØ£zv ö\´ÁuØPõÚ ußø©a ö\»Ä ¹. 10,000. BP
C¸US®÷£õx, öuõÈØ\õø» ÷©À{ø»a ö\»Ä ¤ uõÚ ö\»ÂÀ 50%
BS®. ö£õxÁõÚ ÷©À{ø»a ö\»Ä öuõÈØ\õø» ö\»ÂÀ 10% BP
C¸US®÷£õx ö©õzua ö\»øÁU PshԯĮ.
(A) Rs. 15,000 (B) Rs. 16,500
¹.15,000 ¹.16,500
(C) Rs. 5000 (D) Rs.6000
¹.5000 ¹.6000
(E) Answer not known
Âøh öu¯ÂÀø»
136. The length of time between placing an order and receipt of items is
called.
J¸ Bºhø öPõk¨£uØS® ö£õ¸mPøͨ ö£ÖÁuØS® Cøh°»õÚ ÷|
AÍÄ _________ GÚ¨£k®.
(A) Lead time (B) On time
ßöÚkUS® ÷| ® \¯õÚ ÷| ®
(C) Normal time (D) Over time
\õuõ n ÷| ® TkuÀ ÷| ®
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 62
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137. In ABC, analysis items grouped under C category are _________
valued items.
ABC £S¨£õ´ÂÀ C ¤Âß RÌ öPõkUP¨£mh ö£õ¸mPÒ _________
©v¨¦ÒÍ ö£õ¸mPÒ BS®.
(A) Nil (B) Low
JßÖ® CÀø» SøÓ¢u
(C) Medium (D) High
|kzu E¯º¢u
(E) Answer not known
Âøh öu¯ÂÀø»
138. Unity of command means
PmhøÍ JØÖø© (Unity of command) Gߣx
(A) Worker receives orders from co-workers
£o¯õͺ \P £o¯õÍhª¸¢x Ezu ÄPøÍ ö£ÖÁx
(B) A worker should receive order from superior only
J¸ £o¯õͺ uÚx ÷©»vPõ°hª¸¢x ©mk÷© Ezu øÁ
ö£ÖÁx
(C) Worker receives orders from subordinates
£o¯õͺ xøn AvPõPÎhª¸¢x Ezu øÁ ö£ÖÁx
(D) None of the above
÷©ØTÔ¯ÁØÔÀ GxÄ® CÀø»
(E) Answer not known
Âøh öu¯ÂÀø»
63 441-Mechanical Engineering
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139. Which one among the following is not positive motivational factor.
¤ßÁ¸ÁÚÁØÔÀ Gx ÷|º©øÓ¯õÚ FUPU Põ o AÀ»
(A) Promotion (B) Demotion
£u E¯ºÄ £u CÓUP®
(C) Increment (D) Rewards
\®£Í® AuP¨¦ öÁS©vPÒ
(E) Answer not known
Âøh öu¯ÂÀø»
140. Which of the following is not involved in the computation of Basic
Time?
¤ßÁ¸ÁÚÁØÔÀ Gx Ai¨£øh ÷| U PnURmiÀ CÀø».
(i) Observed Time
PÁÛUP¨£k® ÷| ®
(ii) Rating Factor
©v¨¥mk Põ o
(iii) Relaxation Allowance
u꼀 öPõk¨£ÍÄ
(A) (ii) only (B) (iii) only
(ii) ©mk® (iii) ©mk®
(C) (i) and (ii) (D) (ii) and (iii)
(i) ©ØÖ® (ii) (ii) ©ØÖ® (iii)
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 64
Text of page 63
141. How many inputs does a NOT gate have?
J¸ NOT gate _________ EÒÍx.
(A) One input and one output
J¸ EÒÏk ©ØÖ® J¸ öÁαk
(B) Two input and two output
C sk EÒÏkPÒ ©ØÖ® C sk öÁαkPÒ
(C) Three input and one output
ßÖ EÒÏkPÒ ©ØÖ® J¸ öÁαk
(D) Two input and one output
C sk EÒÏkPÒ ©ØÖ® J¸ öÁαk
(E) Answer not known
Âøh öu¯ÂÀø»
142. A transistor is basically
J¸ i õß]ìhº Gߣx Ai¨£øh°À _________ \õuÚ®
(A) Two terminal device (B) Three terminal device
C sk øÚ¯ \õuÚ® ßÖ øÚ¯ \õuÚ®
(C) Four terminal device (D) One terminal device
|õßS øÚ¯ \õuÚ® J¸ øÚ¯ \õuÚ®
(E) Answer not known
Âøh öu¯ÂÀø»
65 441-Mechanical Engineering
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143. The energy stored in capacitor is given by
ªß÷uUQ°À ÷\ªUP¨£k® BØÓÀ GÆÁõÖ ÁÇ[P¨£kQÓx?
Where E - Energy stored
C - Capacitance
V - Voltage across capacitor
I - Current
t - Time constant
Q - Charge
R - Resistance
(A) E 1/2 CV 2 (B) E = IVt
(C) E = V 2 /R (D) E QV
(E) Answer not known
Âøh öu¯ÂÀø»
144. The number of output combinations of 2-inputs gate logic is
2&EÒÏmk »õâU ÷Pm öÁαmk ÷\ºUøPPÎß GsoUøP.
(A) 1 (B) 2
(C) 4 (D) 8
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 66
Text of page 65
145. The _________ sensor works on the principle of seebeck effect
_________ö\ß\õº ^ö£U ÂøÍÄ öPõÒøP°ß Ai¨£øh°À
ö\¯À£kQÓx.
(A) Strain gauge (B) Thermocouple
ìmö ¯ß ÷Pä öuº÷©õP¨¤Ò
(C) RTD (D) Capacitive sensor
RTD öPõÒÍÍÄ ö\ß\õº
(E) Answer not known
Âøh öu¯ÂÀø»
146. The Hall effect sensor is used to measure
íõÀ ÂøÍÄ En Gߣx _________ AÍÂh¨ £¯ß£kQÓx.
(A) Displacement (B) Magnetic field
Ch¨ö£¯ºa] Põ¢u¨¦»®
(C) Pressure (D) Humidity
AÊzu® D ¨£u®
(E) Answer not known
Âøh öu¯ÂÀø»
147. 1 kwh of electrical energy is _________ k cal
J¸ kwh ªß BØÓÀ _________ Q÷»õP÷»õ BS®.
(A) 860 (B) 3600
(C) 600 (D) 120
(E) Answer not known
Âøh öu¯ÂÀø»
67 441-Mechanical Engineering
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148. On full charging of a lead-acid battery, the colour of positive plate is
J¸ ö»m B]m ÷£mhø¯ Êø©¯õP \õºä ö\´uõÀ, ÷|º©øÓ uPmiß
{Ó®.
(A) Slate grey
ì÷»m \õ®£À {Ó®
(B) Deep-chocolate Brown
Ahº¢u £Ê¨¦ \õU÷»m {Ó®
(C) Milky White
£õÀ öÁsø© {Ó®
(D) Greenish
£aø\ {Ó®
(E) Answer not known
Âøh öu¯ÂÀø»
149. For House wiring, it is advisable to use only _________ for earthing.
Ãmk Á¯[QÀ Gºz ö\´¯ ]Ó¢ux.
(A) Aluminium rods (B) Copper electrodes
A¾ªÛ¯® P®¤PÒ ö\®¦ ªßøÚPÒ
(C) Steel pipes (D) Plastic pipes
C¸®¦ SÇõ´PÒ ¤ÍõìiU SÇõ´PÒ
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 68
Text of page 67
150. An induction motor works on the principle of
J¸ ysk ªß÷©õmhõº G¢u öPõÒøP°ß Ai¨£øh°À ö\¯À£kQÓx.
(A) Electro static induction (B) Mutual induction
ªß{ø» yshÀ £ ì£ yshÀ
(C) Electromagnetic induction (D) Self induction
ªßPõ¢u yshÀ _¯ yshÀ
(E) Answer not known
Âøh öu¯ÂÀø»
151. If a 12V battery is connected in series with two resistor (2 and
4 ), then the current in the circuit is
J¸ ªß_ØÔÀ 12V ÷£mh&Ähß C sk ªßuøh¯[PÒ (2 ©ØÖ®
4 ) öuõhÀ CønUP¨£mi¸¢uõÀ, AvÀ EÒÍ ªß÷Úõmh® _________
BS®.
(A) 2A (B) 4 A
(C) 6A (D) 3 A
(E) Answer not known
Âøh öu¯ÂÀø»
152. Flemings left hand rule is applied to
L¨öͪ[Qß Chx øP Âv _________ US¨ ö£õ¸¢x®
(A) Generator (B) Transformer
ªßÚõUQ ªß©õØÔ
(C) Battery (D) Electric motor
ªßP»® ªß C¯UQ
(E) Answer not known
Âøh öu¯ÂÀø»
69 441-Mechanical Engineering
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153. A circuit has 3A current, 12V supply and the resistance is
J¸ _ØÖUS 3A ªß÷Úõmh® 12V ªß Â{÷¯õP® C¸¢uõÀ,
ªßuøh _________ BS®.
(A) 36 (B) 4
(C) 15 (D) 9
(E) Answer not known
Âøh öu¯ÂÀø»
154. A wire has resistance of 5 . If its length is doubled, then the new
resistance of wire is
J¸ P®¤°ß ªßuøh 5 BS®. Auß }Í® C mi¨£õÚõÀ, Auß ¦v¯
ªßuøh GßÚÁõP C¸US®?
(A) 2.5 (B) 5
(C) 10 (D) 20
(E) Answer not known
Âøh öu¯ÂÀø»
155. The step angle of stepper motor mainly depends on
£i{ø» C¯UQ°ß ìöh¨÷Põn® GuøÚ \õº¢xÒÍx?
(A) Supply voltage only
\¨øÍ ªßÚÊzu® ©mk®
(B) Load current only
_ø© ªß÷Úõmh® ©mk®
(C) Number of stator phases and rotor teeth
ì÷hmhõº ÷£ì\ì ©ØÖ® ÷ õmhõº £ØPÎß GsoUøP
(D) Size of the rotor
÷ õmhß AÍÄ
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 70
Text of page 69
156. The following is the correct order of energy conversion in thermal
power plant.
} õ ªß {ø»¯[PÎÀ BØÓÀ ©õØÓzvß \¯õÚ Áø\ ¤ßÁ¸©õÖ.
(A) Chemical Energy - Mechanical Energy - Electrical Energy
÷Áv BØÓÀ & C¯¢v BØÓÀ & ªß BØÓÀ
(B) Heat Energy - Electrical Energy - Mechanical Energy
öÁ¨£ BØÓÀ & ªß BØÓÀ & C¯¢v BØÓÀ
(C) Mechanical Energy - Chemical Energy - Electrical Energy
C¯¢v BØÓÀ & ÷Áv BØÓÀ & ªß BØÓÀ
(D) Wind Energy - Mechanical Energy - Electrical Energy
PõØÖ BØÓÀ & C¯¢v BØÓÀ & ªß BØÓÀ
(E) Answer not known
Âøh öu¯ÂÀø»
71 441-Mechanical Engineering
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157. The S.F.E.E. for steam turbine is
} õÂ hºLø£Ûß S.F.E.E.
Where C- Velocity of fluid
AvÀ C- v Ázvß ÷ÁP®
Q - Heat supplied
Q - ÁÇ[P¨£mh öÁ¨£®
W - Work done
W - ö£Ó¨£mh ÷Áø»
h- Enthalpy
h- GßuõÀL¤
C12 C22
(A) h1 gz1 Q h2 gz2 w
2 2
C12 C22
(B) h1 gz1 Q h2 gz2 w
2 2
C12 C22
(C) h1 gz1 Q h2 gz2 w
2 2
C12 C22
(D) h1 gz1 Q h2 gz2 w
2 2
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 72
Text of page 71
158. An amount of air is to be cooled without alters its specific humidity.
Select the appropriate process to achieve it.
J¸ SÔ¨¤mh AÍÄ PõØøÓ Auß ìö£]L¤U íü®²imi ©õØÓõ©À
SκÂUP ÷Ásk®. Aøu Aøh¯ ö£õ¸zu©õÚ øÓø¯
÷uº¢öukUPÄ®.
(A) Humidification
íüªiL¤÷Påß (D ¨£u©õUSuÀ)
(B) Dehumidification
j íüªiL¤÷Påß (D ¨£u® }USuÀ)
(C) Sensible cooling
ö\ßê¤À T¼[
(D) Sensible heating
ö\ßê¤À ïmi[
(E) Answer not known
Âøh öu¯ÂÀø»
159. The temperature at which the water vapour present in the air
begins to condense is known as
G¢u öÁ¨£ {ø»°À PõØÔÀ EÒÍ } õ BÚx _¸[Q }ºxίõP ©õÓ
öuõh[SQÓ÷uõ, A¢u öÁ¨£{ø»°ß ö£¯º.
(A) Wet bulb Temperature (B) Wet bulb depression
öÁm £À¨ öh®£÷ a\º öÁm £À¨ i¨ \ß
(C) Dew point temperature (D) Dry bulb temperature
j³ £õ´sm öh®£÷ a\º mø £À¨ öh®£÷ a\º
(E) Answer not known
Âøh öu¯ÂÀø»
73 441-Mechanical Engineering
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160. According to stefan - Boltzmann law, the heat flux q is directly
proportional to
ìj£ß & ÷£õÀmì÷©ß Âv°ß£i, öÁ¨£ £õ´Ä q ÷|ºÂQuzvÀ
öuõhº¦ Eøh¯x.
(A) T (B) T2
(C) T3 (D) T4
(E) Answer not known
Âøh öu¯ÂÀø»
161. The transfer of heat from one substance to another without any
intervening medium is
G¢u Cøh¨£mh FhP® CÀ»õ©À J¸ ö£õ¸Î¼¸¢x ©ØöÓõ¸
ö£õ¸ÐUS öÁ¨£® £©õØÓ® |h¨£x Gߣx.
(A) Conduction (B) Convention
öÁ¨£U PhzuÀ öÁ¨£a \»Ú®
(C) Radiation (D) Both (A) and (B)
PvºÃa_ (A) ©ØÖ® (B) C sk®
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 74
Text of page 73
162. Choose the reversible process among the following
¤ßÁ¸ÁÚÁØÔ¼¸¢x «Ò ö\¯ÀøÓø¯z ÷uº¢öukUPÄ®.
(A) Combustion
G¨¦
(B) Plastic deformation
¤ÍõìiU E¸©õØÓ®
(C) Compression of spring
ì¤[Qß _¸UP®
(D) Electricity flow through a resistance
ªßuøh ÁȯõP £õ²® ªß\õ ®
(E) Answer not known
Âøh öu¯ÂÀø»
163. Which of the following is an intensive property of a thermodynamic
system?
¤ßÁ¸ÁÚÁØÖÒ Gx öÁ¨£ C¯UP¯¼ß w £s¦?
(A) Volume (B) Temperature
PÚ AÍÄ öÁ¨£{ø»
(C) Mass (D) Energy
{øÓ BØÓÀ
(E) Answer not known
Âøh öu¯ÂÀø»
75 441-Mechanical Engineering
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164. The point at which the saturated liquid and saturated vapour states
are identical during formation of steam is
} õÂ EØ£zv°ß ÷£õx \õa_÷ hm } õÂ ©ØÖ® \õa_÷ hm v Á {ø»PÒ
J÷ ©õv¯õP C¸US® ¦ÒÎ.
(A) Saturated point (B) Critical point
\õa_÷ hm £õ´sm QmiPÀ £õ´sm
(C) Triple point (D) Both (A) and (B)
i¤À £õ´sm (A) ©ØÖ® (B) C sk® \
(E) Answer not known
Âøh öu¯ÂÀø»
165. A device attached to the steam chest for preventing explosions due
to excessive internal pressure of steam is called
} õ塧 AvP¨£i¯õÚ EÒ AÊzu® Põ n©õP HØ£k® öÁi¨¦PøÍz
uk¨£uØPõP } õ ö£mi²hß CønUP¨£mh J¸ \õuÚzvß ö£¯º
(A) Safety valve (B) Water level indicator
÷\L¨i ÁõÀÄ Áõmhº ö»ÁÀ Cßi÷Pmhº
(C) Pressure gauge (D) Fusible plug
L¤ åº ÷Pä L¦³ê£À ¨»U
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 76
Text of page 75
166. A device used to a heat exchanger that pre-heats the boiler feed
water using the waste heat from the flue gases is known as
öÁÎ÷¯ØÖ® ¦øP÷£õUQ Áõ²UPμ¸¢x öÁÎ÷¯Ö® PÈÄ öÁ¨£zøu¨
£¯ß£kzv öPõvP»øÚ ßTmi÷¯ `hõUS® öÁ¨£¨ £©õØÔUS
£¯ß£kzu¨£k® J¸ \õuÚzvß ö£¯º
(A) Economiser (B) Super heater
GPõÚõø©\º `¨£º ïmhº
(C) Feed pump (D) Blow off cock
L¥m £®¨ L¨÷Íõ B¨ PõU
(E) Answer not known
Âøh öu¯ÂÀø»
167. The Boiler in which hot gases pass through the tubes surrounded by
water is
usp õÀ `Ǩ£mh SÇõ´PÒ ÁȯõP `hõÚ Áõ²UPÒ ö\À¾®
öPõvP»ß
(A) Water tube Boiler (B) Fire tube Boiler
Áõmhº i³¨ £õ´»º L£¯º i³¨ £õ´»º
(C) Both (A) and (B) (D) None
(A) ©ØÖ® (B) C sk® GxĪÀø»
(E) Answer not known
Âøh öu¯ÂÀø»
168. The ratio of two specific heats Cp and Cv is
Cp ©ØÖ® Cv BQ¯ÁØÔß ÂQu©õÚx
(A) R (B) Ru
R Ru
(C) (D) All of the above
AøÚzx® \÷¯
(E) Answer not known
Âøh öu¯ÂÀø»
77 441-Mechanical Engineering
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169. The specific volume and density of 5 Kg of a gas contained in a tank
of volume 25 m3 is
25 m3 öPõÒÍÍÄ öPõsh öuõmi°À EÒÍ 5 Kg Áõ²Âß SÔ¨¤mh
PÚ AÍÄ ©ØÖ® Ahºzv¯õÚx
(A) 25 m3 / kg , 5kg / m3 (B) 5m3 / kg ; 0.2kg / m3
(C) 0.2m3 / kg ; 5kg / m3 (D) 5m3 / kg ; 25kg / m3
(E) Answer not known
Âøh öu¯ÂÀø»
170. First law of thermodynamics deals with
öÁ¨£ C¯UQ¯¼ß uÀ Âv øP¯õÒÁx
(A) Conservation of heat (B) Conservation of momentum
öÁ¨£ £õxPõ¨¦ ÷ÁPzøu £õxPõzuÀ
(C) Conservation of mass (D) Conservation of Energy
{øÓ £õxPõ¨¦ BØÓÀ £õxPõ¨¦
(E) Answer not known
Âøh öu¯ÂÀø»
171. In Practice the angular deflection of the jet in the bucket of Impulse
turbine is limited about
|øhøÓ°À E¢xÂø\ Âø\¯õÈ°ß ÁõÛ°À öám ªß÷Úõmhzvß
÷Põn»PÀ _©õº
(A) 105º or 110º (B) 125º or 130º
105º AÀ»x 110º 125º AÀ»x 130º
(C) 145º or 150º (D) 165º or 170º
145º AÀ»x 150º 165º AÀ»x 170º
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 78
Text of page 77
172. Which of the following options are true regarding kaplan turbine?
P¨»õß hºø£ß öuõhº£õP ¤ßÁ¸® ¸¨£[PÎÀ Gx \¯õÚx?
(1) High head
E¯º uø»
(2) Low head
SøÓ¢u uø»
(3) Axial flow
Aa_ Kmh®
(4) Inward flow
EÒ÷|õUQ¯ Kmh®
(A) (1) and (3)
(1) ©ØÖ® (3)
(B) (2) and (3)
(2) ©ØÖ® (3)
(C) (2) and (4)
(2) ©ØÖ® (4)
(D) (1) and (4)
(1) ©ØÖ® (4)
(E) Answer not known
Âøh öu¯ÂÀø»
173. The turbine that has buckets with the shape of double semi-
ellipsoidal cups is
C møh Aø &}ÒÁmh ÷Põ¨ø£PÎß Ái»õÚ ÁõÎPøÍU öPõsh
Âø\¯õÈ
(A) Francis turbine (B) Kaplan turbine
¤ õß]ì Âø\¯õÈ P¨»õß Âø\¯õÈ
(C) Pelton wheel (D) Propeller turbine
ö£Àhß Âø\¯õÈ ¦ö õ¨£À»º Âø\¯õÈ
(E) Answer not known
Âøh öu¯ÂÀø»
79 441-Mechanical Engineering
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174. Draft tube is used for discharging water from the exit of
RÌPsh G¢u hºø£ÛÀ i õm SÇõ´ }ø öÁÎ÷¯ØÖÁuØPõP
£¯ß£kzu¨£kQÓx?
(A) An impulse turbine (B) A Francis turbine
C®£Àì hºø£ß ¤ õß]ì hºø£ß
(C) A Propeller turbine (D) A Pelton wheel
¨÷ õö£À»º hºø£ß ö£Àhß ÃÀ
(E) Answer not known
Âøh öu¯ÂÀø»
175. Material of casing of a reaction turbine working more than 100m
head of water is
100 «mh¸US® AvP©õÚ BÇzvÀ }À C¯[S® GvºÂøÚ
Âø\¯õÈ°ß EøÓ G¢u ö©mj¯»õÀ BÚx?
(A) Cast steel
Áõº¨¦ GLS
(B) Mild steel
÷»\õÚ GLS
(C) Concrete
PõßQm
(D) Welded rolled steel
£ØÓøÁUP¨£mh E¸mh¨£mh GLS
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 80
Text of page 79
176. Find the specific speed of a centrifugal pump delivering
100000 liters of water per second against a head of 81m at 270 rpm.
270 rpm ªÀ 81m AÊzu E¯ zvØS Gv õP ÂÚõiUS 100000 l uspº
ÁÇ[S® ø©¯Â»US CøÓ¨¤°ß SÔ¨¤mh ÷ÁPzøuU PshԯĮ
(A) 100 rpm (B) 3162 rpm
(C) 300 rpm (D) 90 rpm
(E) Answer not known
Âøh öu¯ÂÀø»
177. In orifice Co-efficient of discharge (Cd) = 0.6 and coefficient of
velocity (Cv) = 0.9 then find coefficient of contraction (Cc) = ?
öÁÎ÷¯ØÓU SnP® (Cd) = 0.6 ©ØÖ® ÷ÁPU SnP® (Cv) = 0.9 GÛÀ,
_¸UPU SnP® (Cc) = ? IU PshԯĮ
(A) 0.667 (B) 0.54
(C) 1.5 (D) 0.3
(E) Answer not known
Âøh öu¯ÂÀø»
178. The Liquid used in an inverted differential Manometer should be of
uø»RÌ ÷ÁÖ£mh ©÷Úõ«mhÀ £¯ß£kzu¨£k® v Á®
(A) Low Density
SøÓ¢u Ahºzv v Á®
(B) High Density
E¯º Ahºzv v Á®
(C) Low surface tension
SøÓ¢u ÷©Ø£ ¨¦ CÊÂø\ v Á®
(D) High Surface tension
E¯º ÷©Ø£ ¨¦ CÊÂø\ v Á®
(E) Answer not known
Âøh öu¯ÂÀø»
81 441-Mechanical Engineering
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179. The type of impeller used in sewage or paper pulp pumping is
PÈÄ}º AÀ»x PõQu TÌ E¢vz uÒÐÁvÀ £¯ß£kzu¨£k® _Ǽ°ß
ÁøP
(A) Closed impeller (B) Open impeller
i¯ _Ǽ vÓ¢u _Ǽ
(C) Semi closed impeller (D) Semi opened impeller
Aø i¯ _Ǽ Aø vÓ¢u _Ǽ
(E) Answer not known
Âøh öu¯ÂÀø»
180. Pick out odd one related to venturimeter
öÁsl «mh¸US öuõhº¤À»õu JßøÓ ÷uº¢öuk
(A) Converging part (B) Flat circular plate
JßÔønUS® £Sv umøh¯õÚ Ámhz umk
(C) Throat (D) Diverging part
öuõsøh¨ £Sv ÂÁøh²® £Sv
(E) Answer not known
Âøh öu¯ÂÀø»
181. A Pump is a device which converts
J¸ £®¨ Gߣx Cøu ©õØÖÁuØPõÚ \õuÚ® BS®
(A) Pressure energy into mechanical energy
AÊzu BØÓø» C¯¢v BØÓ»õP ©õØÖuÀ
(B) Mechanical energy into pressure energy
C¯¢v BØÓø» AÊzu BØÓ»õP ©õØÖuÀ
(C) Electrical energy into mechanical energy
ªß BØÓø» C¯¢v BØÓ»õP ©õØÖuÀ
(D) Mechanical energy into electrical energy
C¯¢v BØÓø» ªß BØÓ»õP ©õØÖuÀ
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 82
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182. A pump consists of two identical intermeshing spur wheel externally
called as
J¸ £®¨ öÁΨ¦Ó©õP C sk Jzu Cøh¨£mh 죺 \UP [PøÍU
öPõskÒÍx. Cx GÆÁõÖ AøÇUP¨£kQÓx?
(A) Internal gear pump (B) Vane pump
EÒ _ÇÀ £®¨ CÓS GUQ
(C) External gear pump (D) Lobe pump
öÁÎ_ÇÀ £®¨ _ÇÀ ©hUS £®¨
(E) Answer not known
Âøh öu¯ÂÀø»
183. The absolute pressure and temperature of carbon dioxide are
600 kN/m2 and 30ºC. Find its mass density in Kg/m3
CO2 °ß Êø©¯õÚ AÊzu® 600 kN/m2 ©ØÖ® öÁ¨£® 30ºC, GÛÀ
Auß {øÓ Ahºzv Kg/m3
(A) 10.14 (B) 113.24
(C) 0.0986 (D) 0.0081
(E) Answer not known
Âøh öu¯ÂÀø»
184. A Soap bubble 64mm in diameter has an internal pressure in excess
of the external pressure of 20 N/m2 What is the tension in the soap
flim in N/m
J¸ ÷\õ¨¦ SªÈ°ß ¼mhº 64mm ©ØÖ® Ax 20 N/m2 öÁΨ¦Ó
AÊzuzøu Âh AvP EÒ AÊzuzøu öPõskÒÍx, GÛÀ ÷\õ¨¦
£h»zvß CÊÂø\ N/m °À
(A) 0.16 (B) 160
(C) 0.32 (D) 320
(E) Answer not known
Âøh öu¯ÂÀø»
83 441-Mechanical Engineering
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185. Find the pressure in KPa at a depth of 15 m below the free surface
of water in a dam
Kº Aøn°À ÷©Ø£ ¨¦ }ß R÷Ç 15 m BÇzvÀ AÊzuzøu KPa ¼À
PshԯĮ
(A) 147 (B) 0.147
(C) 156 (D) 0.156
(E) Answer not known
Âøh öu¯ÂÀø»
186. Ratio of Number of teeth to the pitch circle diameter is Termed as
£ØPÎß GsoUøPUS® _¸v Ámh ÂmhzvØS® EÒÍ ÂQu® GÆÁõÖ
AøÇUP¨£kQÓx?
(A) Diametral pitch (B) Module
Âmh _¸v ©õk²Ò
(C) Circular Pitch (D) Backlash
Ámh _¸v ÷£U»õè
(E) Answer not known
Âøh öu¯ÂÀø»
187. Which of the following bearing is not an antifriction bearing?
¤ßÁ¸® G¢u uõ[Q E õ´Ä Gvº¨¦ uõ[Q AÀ»
(A) Tapered roller bearing
SÖP»õÚ E¸øÍ uõ[Q
(B) Journal bearing
áºÚÀ uõ[Q
(C) Deep groove ball bearing
BÇ©õÚ £ÒÍ® £¢x uõ[Q
(D) Spherical roller thrust bearing
÷PõÍ E¸øÍ E¢xuÀ uõ[Q
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 84
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188. In thrust bearings, the load acts
E¢xÂø\ uõ[S E¸øÍPÎÀ _ø© G[S ö\¯À£kQÓx?
(A) along the axis of rotation
_ÇØ]°ß Aa]À
(B) parallel to the axis of rotation
_ÇØ]°ß Aa_US Cøn¯õP
(C) perpendicular to the axis of rotation
_ÇØ]°ß Aa_US ö\[SzuõP
(D) in any direction
G¢u vø\°¾®
(E) Answer not known
Âøh öu¯ÂÀø»
189. A circle drawn from the centre of the cam through the pitch points is
called
÷Pªß ø©¯zv¼¸¢x ¤ma ¦ÒÎ ÁȯõP Áø ¯¨£mh J¸ Ámh®
(A) Base circle (B) Pitch circle
Ai¨£øh Ámh® ¤ma Ámh®
(C) Pitch curve (D) Prime circle
¤ma ÁøÍÄ ¤ø ® Ámh®
(E) Answer not known
Âøh öu¯ÂÀø»
190. Which of the following is not a flexible driver
¤ßÁ¸ÁÚÁØÔÀ Gx ö|QÌÁõÚ C¯UQ AÀ»?
(A) belt drive (B) chain drive
ö£Àm iø Æ ö\°ß iø Æ
(C) rope drive (D) gear drive
÷ õ¨ iø Æ Q¯º iø Æ
(E) Answer not known
Âøh öu¯ÂÀø»
85 441-Mechanical Engineering
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191. The included angle of V belt is usually from
ö£õxÁõP V ö£Àiß \õ´ÁõÚ ÷Põn©õÚx
(A) 20º to 30º (B) 30º to 40º
20º uÀ 30º 30º uÀ 40º
(C) 40º to 50º (D) 15º to 20º
40º uÀ 50º 15º uÀ 20º
(E) Answer not known
Âøh öu¯ÂÀø»
192. Which is/are the following(s) are correct in belt drive, the power
transmitted depends upon
ö£Àm iø ÂÀ ¤ßÁ¸ÁÚÁØÔÀ Gx \¯õÚx, Phzu¨£k® \Uv ______
I¨ ö£õÖzux
(i) The velocity of the belt
ö£Àiß ÷ÁP®
(ii) The Tension Under which the belt is placed on the pulleys
¦À¼PÎÀ ö£Àm G¢u CÊÂø\°ß RÌ øÁUP¨£kQÓx
(iii) The arc of contact between the belt and the bigger pulley
ö£ÀmkUS® ö£¯ ¦À¼US® Cøh°»õÚ öuõhº¦ ÁøÍÄ
(A) (i) and (iii) (B) (i) only
(i) ©ØÖ® (iii) (i) ©mk®
(C) (i) and (ii) (D) (ii) and (iii)
(i) ©ØÖ® (ii) (ii) ©ØÖ® (iii)
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 86
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193. A muff coupling is used to connect two steel shafts transmitting
40kw at 350 rpm. The allowable shear stress may be assumed as
15 MPa. Calculate the outer diameter of the sleeve if the diameter of
the shaft is 55 mm
C sk GLS uskPøÍ CønUP, J¸ muff coupling
£¯ß£kzu¨£kQÓx. Cx 350 rpm ÷ÁPzvÀ 40kw BØÓø»U PhzxQÓx.
AÝ©vUP¨£mh shear stress, 15 MPa ©ØÖ® usiß Âmh®, 55 mm
GÛÀ, ì½Âß öÁÎÂmh® AÍÄ GßÚ?
(A) 40 mm (B) 123 mm
(C) 97 mm (D) 68 mm
(E) Answer not known
Âøh öu¯ÂÀø»
194. Which property in vital in high-temperature applications to prevent
permanent deformation?
E¯º öÁ¨£{ø»°À, J¸ ö£õ¸ÎÀ { ¢u E¸USø»Ä HØ£kÁøuz
ukUP G¢u¨ £s¦ ªPÄ® UQ¯©õÚx?
(A) Hardness (B) Impact strength
PiÚzußø© uõUS Á¼ø©
(C) Creep (D) Fatigue strength
Q¨ (|PºÄ) ÷\õºÄ Á¼ø©
(E) Answer not known
Âøh öu¯ÂÀø»
87 441-Mechanical Engineering
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195. Find the allowable shear stress of a solid steel shaft to transmit
20Kw at 200 rpm. The ultimate shear stress for the steel may be
taken as 360MPa and a factor of safety as 8
20Kw vÓøÚ 200 rpm ÷ÁPzvÀ PhzxÁuØS J¸vh GLS usiß
AÝ©vUP¨£mh öÁmk AÊzuzøuU PshԯĮ. GLSUPõÚ AvP£m\
öÁmk AÊzu® 360MPa BPÄ® £õxPõ¨¦ Põ o 8 BPÄ®
GkzxUöPõÒÍ»õ®
(A) 2880 N/mm2 (B) 45 N/mm2
(C) 45 N/m2 (D) 2880 N/m2
(E) Answer not known
Âøh öu¯ÂÀø»
196. What is the term for the ability of a material to resist the externally
applied forces without yielding?
J¸ ö£õ¸Ò ÁøÍ¢x öPõkUPõ©À, öÁΨ¦Ó©õP £¯ß£kzu¨£k®
Âø\PøÍ GvºUS® vÓÝUPõÚ ö\õÀ GßÚ?
(A) Strength (B) Toughness
Á¼ø© uõ[SvÓß
(C) Creep (D) Resilience
|PºÄ (Q¨) «Òußø©
(E) Answer not known
Âøh öu¯ÂÀø»
197. Which one of the following is not a mechanical property of a
materials?
RÌUPshÁØÖÒ Gx J¸ ö£õ¸Îß C¯¢v ¯À £s¦ AÀ»?
(A) Malleability (B) Ductility
Ai©izußø© P®¤zußø©
(C) Thermal Conductivity (D) Strength
öÁ¨£UPhzxzvÓß Á¼ø©
(E) Answer not known
Âøh öu¯ÂÀø»
441-Mechanical Engineering 88
Text of page 87
198. Which one of the following is correct if the round solid shafts polar
moment Inertia?
J¸ Ámh vh©õÚ uskUPõÚ ÷£õ»õº ö©õö©ßm B¨ CÚº]¯õÂØS Gx
\¯õÚx?
(A) d2 (B) d3
32 32
(C) d4 (D) d 5
32 32
(E) Answer not known
Âøh öu¯ÂÀø»
199. Which of the following theory is used for brittle material when
shafts subjected to combined twisting moment and bending
moment?
uskPÒ ÖUS Âø\ ©ØÖ® ÁøÍÄÂø\ BQ¯ C skUS®
Em£kzu¨£k®÷£õx, ö|õÖ[S® ö£õ¸mPÐUS¨ ¤ßÁ¸® G¢u
÷Põm£õk £¯ß£kzu¨£kQÓx?
(A) Maximum normal stress theory
AvP£m\ ö\[Szx AÊzu uøPÄ ÷Põm£õk
(B) Maximum shear stress theory
AvP£m\ öÁmk AÊzu uøPÄ ÷Põm£õk
(C) Guests theory
÷Pìm v¯
(D) Tresca theory
i ìUPõ v¯
(E) Answer not known
Âøh öu¯ÂÀø»
89 441-Mechanical Engineering
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Source: Tamil Nadu Public Service Commission. Question paper published by Tamil Nadu Public Service Commission.