APPSC AE 2026: Assistant Engineers (Notification 20/2025), Paper II Civil and Mechanical Engineering (Common), English version
Text of page 1
Eater the Registered Numtrcr
ffi IIIIII I Series
MC/EA/610
3 2026
Paper-[I - Civil & Mechatical Engineering
@nglish Yerslon)
QEnion Bmkler Sl. No.
1047805
ffi
Time : 150 Minutes Max. Marks : lfl)
INSTRUCTIONS
t. The Question Paper conaim 150 questions. Each question caries I ma*- For each wrong
answer 113'd mark will be dedrrctcd.
2. Plcase check the Questior Paper and ensure that it contsins all the questions. If you find any
defect in the Qucstion Paper or OMR Answer Sheet, please get it replaced immediarely. The f-'
OMR Answer Sheet is in D,uplicafc. Do not separate the copies. The markings on the first page z*.1
will automatically come oo the second copy also. Ttre firsr copy (Original) will be raafured for I
evaluation and the s€cond copy (hplicate) can be taken by rhe candidate. L
3. Write your Registered Number dr the top o On neht hand corner of
the firsr page, the Question Paper Series is or"O o, the oMR
Side-l at tbe right aop corner Senes are printed as
. Darken the apropriate circle, as per your Question Paper Series with Bluei
point pen. Gel Pens/Peucils are not allol'ed
Erample to fll up tic Qrrstion Paper Series on tte OMR Ansn'er Sheet
lf yw Qtclioa Prpq Series is A, plcrrc fill as $or.a bclow :
o@o@
If yol hove not narLed tlc A4e*'on Paper Series on lhe OMR .4,nstoer Shea, Si*-I or
Por, C with Blrctslact Etll poiat peq or aa*ed ia a way that it kads lo discrepancy in
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invalidated.
300r !0?6 P.T.O.
I I
Text of page 2
5
MC/EA/610
ffi5, Each question is follo* ed by 4 answer choices. Of these, you have to carefully select one
corect arsrver and mark it on the OMR Answer Sheet by completely darkening the appropriate
circle for the question. lf more than one circle is dartened, the answer will not b€ valued at
all, Use Blue or Black Ball point pen to make thick mark to fill rhe circle completely. Make no
oth€r stains or marts. Using WhitetrerBlrdc/8.$erlChrlk Powder anywhere on the OMR
Answer Sheet or any kind of tampering to change the answers on OMR Alswer Shea will lead
to lnvalldetion of the entire OMR Answer Sheet.
e.g. : If the answer for Questioo No. I is Answer choice (2), it should be marked as follows :
I o
6. Do not fold, tear, urinkle, tie, staple, do any rough work or makL'any stray nwks on the OMR
Answer Sheet. Other*'ise yow OMR Arswer Sheet will be invrlideted.
7. Do not ,mrk answer choices on the Question Paper. Violation of this will be viewed
seriously.
8. Rough work may be done on the last page of the Qrestion Paper only. It should not be dooe
any*'kre else.
9. Scientilic c.lculator is allored. Hou'eveq any othe, t,?€ of Electrotric Devices such
as MathematicaL'Log Tables, Mobile Phones, Bluetooth instruments, Digital Watches,
Programmable Calculators etc,, should not be brought into the Examioatioa Hall. If found in
possession ofsuch devices, it will be considered as cheating and strict action takeo.
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any means to cheatrcopy etc., he/she is liable for prosecution (Police Case) and debarment.
ll- Caodi&tes should stay in the Examination Hall till expiry of Full Time i.e. 272 Hours. No
candidate shall be allowed to leave the Hall in the middle of lhe exarnination uoder any
ctcumstances.
12. Before leaving the examination hall, the candidatc should hand over the OMR Answer Sheet
top sheet (Original) to the Invigilaor and carry the bottom sheer lDuplicate) for his/her record.
Carrying au'ay Original OIr{R Answer Sheet will tre a criminal offence-
7
-10012026
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Text of page 3
}IC/EA/6IO
ffil.When a steel bar having lengtb. of 2 m is zubjected to teosion, it elongat€s by 1.4 mm. The
corresponding strain in the steel llar is
(r) 0.0006 (2) 0.0008 (3) 0.0007 (4) 0.0009
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2. Materials that fail in tension at rclatively tow values of strain are classified as
Hffi
(l) ductile (2) malleable (3) brinle (4) plastic
3. The lar moment of inertia of tlre circular cross-section is
{l) x ,rd4
.'64
(2)
nd'
or* (4)
fiA{
128
,1. The phenomenon of the deterior*ion of a material under repeated cycles of stress and strain,
rcsulting in progrcssive crackingltat eventua! fracture is called
(l) creep (2) brittle (3) fatigue (4) ductility
5. The radius of gyration of a circular section baving diameter, d is
d d d q
)- (2) (3)
"16 8 t ( )
4
6. Tlre effective length of a column hbving lengtlr L with one end fixed and the other end free is
(l) L (2)
,.2 ! (3) 2L (4)
L
4
7. Tbe Poisson's ratio ofa rnateriat having Youg's modulus 1.2 x ld Mmml and modulus ofrigidity
E]#Ei 4.8 x I d Nimm2 is
ffi ) (l 0.1-s (2) 0.25 (3) 0.20 (4) 0.30
t. the ma:iimum deflection of a siiirply zupported beam having length L, Young's modulus E aod
moment of inertia I subjected t+a concentrated load W is
wlr
(l) 4sEI /?\
wll wL3 wlr
''' 21Et
(3) (4)
3Er t?Et
- Eliitr
9. The poiot of cootraflexure is also *nown as iurf,i
lljl+J
(l) \,'irtual hiflge (2) Point of inflectiot
(3) Centre of gravity (4) None
J (A)
I
Text of page 4
MC/EA/6TO
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10. A localized compressive stress at the area of contact betw'een fivo members is knowa as
(l) Tensile (2) Shear (3) Bending (a) Bearing
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ll, Which of the following is a statisally indeterminate beam ?
biifs
(l) Cantilever (2) Simply supported
(3) Overhanging (4) Fixed
12. The ratio ofmaximum shear stress to average shear stress is l.l3 in a beam of
(l) circle (2) rectangle (3) triangle (4) I-section
13. Moment of inenia ofa triangular section about base having base u'idth, b aod heighl h is
bhr bh bhl bhr
(l) 36 (2)
I2
(3) u (4) 4s
14, The araximum bending momentoJa cantilever beam of lengfh 2 m carrying a unifomrly digibuted
Fffi,o"a of : kNim run over a length of I m from the fixed end is
'*(,) -r.8kNm (2) -rkNm {3) -l.2kNm (4) - l.5kNm
15. A stecl bar of20 x @ mm rectangular cross section is subjected to two equal and opposite couples
acting in tle vertical plane of syometry of the bar. Determine the value of bending moment M
thar causes the bar to yield. Asqpge o" : 250 MP8.
(l) 2.5kN-m (2) 2.0ktl.m (3) 3.0 kN.m (4) 3.5 kNm
-
EIi$EI
16, Section modulus of a hollow rectangular section is bffi
(BD'-bd')
(l) (BD'-bd') t2)
6D 3D
(3)
(BD'-bd') (4)
BDT_M'
8D t2D
17. The maximurn shear stress gencraled in a circular tube with an outer diameter of 80 mm aod an
inner diameter of 6O mm is subjected to torque T:4 kN.m is
(l) 50.20 MPa (2) 51.;10 MPa (3) 58.20 MPa (4) 6O MPa
{ (A)
I
Text of page 5
r\{ciEA/610
ffi
l& If the diameter of the long cohifin is re&red by 20Yo, the percentage of reduction in Euler's
buckling load is
(1) 36 t2) 4 {3) 59 gl ag
19. The principal stresses at a poi6l.ir a bar are 160 MPa (tensile) and 80 MPa (compressive). Then,
ffi,h. .ort*t stress in mageihfrataoa Arection oo a plane incliaed at 60o to the axis of the rrajor
Eliilhprincipal stress is
(l) 144.22 MPa Q) l4A.Z,2MPa (3) 145 MPa (4\ 143.22M?a
20. A straight bar is fixed at the eSAs e and n as shown in figure. Its elastic modulus is E and
cross-section is A. There is load- P = 120 N acting at C. Determine the rcactions at the ends.
tri#EI
till.f.,
E!ffi
A C.-----rP B
L 2L
Lr.*.-l.-l
(l) 60 N atA,60N at B (2) 40NatA,80NatB
(3) 30NatA,90NatB (4) 80NatA.,40NatB
..;
21. The temperature stress is a fu!(*iln of
a. Co-efrcient of linear expansion
b. Temperature rise
c. Modulus of e lasticity t,,'.,
The correct answer is J:::'
. ..4:
(l) a and b only {2) b ry4c on}y (3) a, b and c (4) aandconly
tritEl
22, Choose the waong statemert. r ii LJ#T,T
t95l$J
(l) The shear force at alry section ofa beam is equal lo the total sum ofthe forces acting on the
beam on ary one side of tbe'section.
(2) The magn:itude of bendin!$iome t at aoy section of a beam is equal to the vector sum of
the moments (about the st*{ion) due 1o the forces acting oa the beam on any one side of
the section. a,,::
(3) A diagram uhich shows rli values of shear forces at various s€ctions of structural member
is called a shear force diagram.
(4) A simply supported beam is the one which is supported on more than two suppoars
5 (A)
I
I
Text of page 6
MC/EA/6IO
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23. A simply supported beam carries a uniforrrly distributed load over the whole span- The deflection
at tb€ centre is 'y'. Ifthe distribrrled load per unit length is doubled aod the depth ofthe beam is
doubled, then the deflection ar tte cenfe woild be
(r) 2y (2) 4y (3)
; (4) I4
24. The maximum b€nding moment g&erated in a cantilever beam of length 4 m carrying a gradually
varying load wi& zero at free end to 2 kN/m at the fixed end is
(l) - 2.33 kNm (2) - 5.33 kNm (3) - 6.33 kNm (4) -4.83 tNm
_2.5. A group of three strain gauges arranged in a panicular pattern to measr:rc normal strain in
directions is caued
E|EH ::*'*,*g
(t) extensromeler (2) strain rosette
(3) proving ring (4) linear variable diferential transformer
E#E
26. In a simply supported beam, ternperature variatiotr produc€s bffi
(l ) Izrge stresses (2) Sma.ll stresses (3) Zero stress (4) None
27. The bending momenl at the fixed end for a propped cantilever beam carrying a miforrnly disributed
load 'n 'over the entte span of hggh, / is
,7
(r) .v{
l2
(21 wt2
8
(3) 11-
24
@v!
rl8
28. A short column of rectan carries a point load ftV) acting wi& an eccentricity (e).
The shape of the kernel area *-ould be
(l) square (2) rhombus (3) circle (4) rectangle
29. \trhat is the value of the angle '0' so that motion of the 40 kg block impends down the piane as
shown in figure ? The co-efficientof frictior; p for all surfaces is 0.33. Consider g = 9.8 rds2.
Et#tr
Hffi
13.5 kg
40 kg
0
(r) 30.1' (2) 31.2" (3) 28.2" (4) 2e.t"
6 (A)
I I
Text of page 7
NIC/EA/6IO
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30. The flexural rigidity for the deflection of beams is expressed as
''il)1E (2) Er .,1g
(3) (4)
.,EI a
EiHE
31. A pipe is said to be a siphon if Irs*r:t
E]Iffi
(I) It can operate without external power (2) It can discharge a liquid at a fast rate
(l) It has sub-abrospheric pressure in it (4) The exit is at a lower level than inlet
32. The unit of dynamic viscosity is
(r) +
mr
(2) Pa.s (3) lg-
m.s
(4) All ofthe above
33. A tank is filled with oil whose density is p = 850 kg/m3. If the volume of the tank is V= 2 ml,
determine the amount of mass m in the tank.
(l) l800kg (2) t700kg (3) l7sokg (a) l720kg
E]iiE
(tlll.a?
34. A gage reads a vacuum of 24kPa, What is the absolute pressure at sea level ?
El:xfi
(I ) 77.3kPa (2) l01.3kPa (3) l25.3kPa (4) l0okPa
35. A temperature of 20'C is measured at a certain location. What is the temperatue in Kelvins ?
(r) 253 K (2) 2e3K (3) 200K (4) 273K
36. The relation between surface tension o and difference of pressure p between inside and outside
ol a liquid jet ofradius r is given by
2c o
fl)- r (2) (3) lg (a) o'so
r r r
37- The point of inte$ection between the axis of a floating body and vertical line passing through the
E*H o"* ".ot " ofbuoyancy obtained when the floating b;dy is slightly tilted or it undergoes a small
@ffi angular displacement 0 is called
DELETED
(l) Metacentre (2) Cenooirt (3) Eccentricity (4) None ofthe above
38. The device used to measure the rat! offlow of a liquid through a small channel or a tank is
(1) Notch (2) Ventiririmeter (3) Orifice (4) Mouthpiece
7 (A)
E t
Text of page 8
IIC/E4/6l0
ffi 39. The line traced by a single fluid particle as it moves over a od of time is called
(I ) streamline (2) streakJirr (3) path-line (4) streamtube
40. The loss ofenergy or head at the exit ofa pipe is given by
(t1 0'5v:
29
@Y
2
(3) I4g ,rry
trirE
LrlilrF]t
41. The flow in pipes is turbulent if Reynold's number is greater than
Illitr
(1) 1000 (2) 2000 (3) 3000 (4) 4000
42. Which of the following is an impulse turbine ?
(l) Francis turbine (2) Kaplan turbine (3) Pelton wheel (4) Propeller hrbine
43. The s ific eed of any turbine is given by
E
1) Nr=Nf (2) N, = Nf
H; Hi
(3) N, = Nf (4) N,=Nf
H1 H,
44, The specific speed of a centrifugal pump is given by
(l) ,or=*f (2) N, =
Nf (3) N, = Nf (4) N. =\ry
H.l H*o H H.,
45. A grid obtained by drawing a series of streamlines and equipotential lines is called
(I ) streamtube (2) flow net (3) streamline (4) none ofthe above
46. Draft tube is used for discharging water from the exit of DELETED
( l) lmpulse turbine (2) Kaplan turbine (3) Pelton wheel (4) Prancis turbine
47. A orifice is known as large orifice when the head of liquid from the centre of orifice is
tr
(l) more than 10 times the depth oforifice (2) less than l0 times the depth of orifice
3) less than 5 limes the depth of orifice (4) none of the above
8 (A)
Text of page 9
MC/EA/6IO
ffi
4E. Co-efficient of velocity (C,,) for aa.orifice is
(1) Cv = E-' (2) c"=\m
{,,
(3) c, = 2x (4) None ofthe above
@
EI*EI
49. The velocity disaibution in laminal..ffow tbrough a circular pipe follow the
(l) parabolic law (2) linear E-w (3) logarithmic law (4) aone ofthe above
ffi
50. The &iction factor for lamiaar flox through a circular pipe is given by
- 0.0791
fi) I=- (2) I^=R;
16,*t
(3) (4) None ofthe above
R.r ' 'R"
f =!1
51. Power transmitted ttrough prpes !flI be maximum when
(l) head lost due to friction = i- {t"t"l t at inlet ofthe pipe)
"ua
(2) head lost due to friction =
| -{tot"f head at inla ofthe pipe)
(3) head lost due to friction head at inlet ofthe pipe)
(4) head lost due to &iction -3 (total head at inlet ofthe pipe)
52. Curve A in the figure corresponds"to
ffi
EIiSEI
+ B
I
c
I D
Vclociry Gradienr -----"-"-->
(1) Newtonian fluid (2) Thixotropic fluid (3) Elastic solid (4) Ideal fluid
53. For a submerged body, if the centr*of buoyancy is above the ccnue of gravity, the equilibrium is
called EiTEI
(l) stable (2) ncutral
bffi
(3) mstable (4) none ofthe above
9 (A)
I
Text of page 10
n{c/EA/5I0
ffi
54. Cipolletti weir is a trapezoidal weir having side slope of
(l) I horizontal o 2 vertical (2) 4 horizontal to I vertical
(3) I horizonul to 4 vertical (4) I horizontal to 3 vertical
55. Ctwe B in the figure indicatcs
ffi
EIiHEI
A
(l) velocity distribution (2) pressure distribution
(3) shear stress distribution (4) none of the above
56. Maximuur efficiency of power transmission tbrough pipe is
(t) 5oo/o (2) 66-679',o (3) l00p/o (4) i1o/o
57. The overall efficiency ofa arybine is the ratio of E;TE]
(l) power at the inlet of nubinc to the power at the shaft Effi
(2) power at the shafr to the..Ioryer given to the ruoner
(3) power at the shafl to the power at the inlet ofturbine
(4) none ofthe above
5& Caviatioa will take place if the pressure of the flowing fluid at an1 point is
(l) more than vapour pressure ofthe fluid (2) less thaa vapour pressure ofthe fluid
(3) equal to vapour pressure of the fluid (4) none ofthe above
tr;iEl
59. Surge tank in a pipe line is used to
hH
(l) reduce the loss of head due to ftiction in pipe
(2) make the flow uniform in pipe
(3) relieve the pressure due to *ater harnmer
(4) none of the above
l0 (A)
I
I
Text of page 11
l,tc/EA/610
ffi
60. If the specific speed ofthe turbine is mor€ than 300 m, the R?e oftrubine used should be
(l) Kaplan (2) Frarcb (3) Pelton (4) Non* ofthe above
EIiEE
61. What do€s the op€rating characteristi c cun'e of a ortine meal ? hffi
(l) curve drawn at constant head (2) curve drawr at constanl speed
(3) curve dravm at constant efficiency cun'e $n at constant
52. The unit discharge (Qu) and mitspeed (Nu) curves for different hubines are shown in figure
EIiTE Cun'es B, C, A represent
ffi o
H = Consullr
c
Sr
bt
2l I
B
= ---; N. (L'ait spced)
(I ) Pelton rurbine. Francis rurb Kaplan orbine
(2) Francis turbine, Kaplan turbine, Pelton turbine
(3) Kaplan rurbine, Pelton , Francis turbine
(4) Francis turbine, Pelton turtiire, Kaptan turbine
63. The resulraat oftwo perpendicular forces each egual to 2P will be equal to
<rt %.E @ 2J'P (3) 4J?P (4) 4P
64, Ift*'o concurrent forces P artd Q having an angle of60' between them. then the direction oftheir
resultant defned by angle 0 with reference to the direction ofP is given by
)
(l) r^oo= {Q (2) tanO=
2P
2P+Q .l3Q + P
(3) tan0=
P
(4) tan 0 = a
a;-'f3P- Q+ '/3P
65. Theorem ofperpendicular axis is.used in obtaining moment of inertia of
(I ) Triangular lamina (2) Square lamina
(3) Rectangular lamina (4) Circular lamina
ll (.{)
I
Text of page 12
l|tclEA/610
ffi
66. The ceittre ofgraviry ofa nght circular solid cone ofdia'd'anJ height'h'lies at the following
distance from the base.
(t) hJ2 Q) hi3 (3) t-4 (4) h/6
67. A common condition for i rrerrnibility or self-locking of a machine that its efficiency must be
(t) <5v/. {2) > sv/o {3) >67% @) fiu'/o
6& lf efficiency ofa lifting machiire is kept consunt, its velocity ralio is dir€ctly proportional to its
(l) Machine friction (2) Mechanical advantage
(3) Etrort applied (4) Etron lost in friction
EiSEI
69, The velocity ratio ofa first system ofpulleys with four movable pulleys is
E,ffi
(l) 4 (2) 8 (3) t2 (4) t6
70. tffien compared to malleability, ductility relates to
(l) Shear stress (2) Tensile stess
(3) Compressive stress i4) Thernal stress
71. When initial area ofa tensile bar is used in calculating axial stress. the resuhing saess is called
tsi*EI
rrue stress (2) Nominsl stress
ffittl
(3) Maximum stress (4) Minimum stress
Ei#E]
72, Materials undergo large straiasXefore failure are classified as Effi
(l ) Ductile (2) Plastic (3) Brinle (4) Elastic
73. Tk energ tbat is lost in the process of pemranently defonning a bar (io t€nsion) is knowo as
(l) Internal wort (2) Extemal wort
(3) Elastic strain energy (rl) lnelastic strain energy
7il. Tlre ratio of Youog's modulus to Modulus of rigidity for a materierl having Poissoa's ratio 0.25 rs
(l) 2.5 (2t 0.1 (3) 1.25 (1) 0.8
l2 (A)
I
-
Text of page 13
t{ciE.{/610
ffi 75. The ability of material to absorb cnergy without fracturing is
(l) Ductility (2) Hardness (3) Resilience (4) Toughness
76. A cantilever beam of span l, modulus ofelasticity E and moment of inertia I. carrying a point load
P at its free stores what amount of strain energy ?
E
(r) P?13/(6Er) (2) p2l5/(40Er) (3) p2l3/(968l) (4) p2l5/(24OEI)
77. If a solid cube is subjected to equal normal forces on all its faces, the ratio of volumetric strain to
linear strain in any ofthe three axes
(r) 0.33 (2) l (3) 3 (4) 6
78. A simply supported beam is carrying a linearly varying load from zero at either ends to the maximum
value at the mid span. Then the shape of Shear Force D (SFD) is
(l) Rectangle (2) Triangular (3) Parabotic (4) Cubic
79. The central region of the simply supported beam sho*n in the follorving figure is in g;"1
P P tffi
(-+
(l) Zero flexure (2) Zero bending (3) Pure bending (4) Pure shear
80. Bending moment is minimum or maximum at a section of a beam u.here
(l) Shear force changes sign (2) Shear force is maximum
(3) Shear force is minimum (4) None ofthe above
81. If section modulus of a rectangular beam having depth of 600 mm is 1.8 x l0s mm3 modulus of
the width of tbe beam ir DELETED
ffir.",'on.
--'- (l) 600 mm (2) 400 mm (3) 300 mm (4) 150 mm
82. The shape of the shear stress disEibution diagram for a rectangular beam is
(l) Parabola (2) Reeangle (3) Hyperbola (4) Triangular
l3 (A)
Text of page 14
MC/IA/610
ffi
83. Moment area method is useful for
(l) Cantilever beams (2) Columns
(3) Rotating shafts (4) Plane trusses
84. For a 3 m long cantilever beam carrying P point load at the free end, the maximum slope is
(r) PL?(6Er) (4 PL2t$Et) (3) PL2(2Er) (4) PL2(Er)
85. Curvature ofa beam having Young's modulus 'E'and moment ofinertia 'I'for a bending moment
FH*,
(r) ErlM (2) M/Er (3) ME/r (4) MvE
E6. A 4 m cantilever beam with propped end is loaded with UDL of 2 kN/m. What is the reaction at
the propped end ?
(1) 5 kN (2) 4 kN (3) 3 kN (4) r.5 kN
Ei*EI
87. The number of unknown at roller support is ffis
(l) Zerc (2) One (3) Two (4) Three
88. Force required to produce a unit deflection ofa spring is called
(I ) Oscillation (2) Spring Constant
(3) Flexibility (a) Axial rigidity
89. A close coiled helical spring is having mean coil diameter of D, spring wire diameter d, n number
j
of coils and rigidity modulus of G. When a load of W is applied" the deflection ofthe spring is
(l) 5=8WDJ /(Gd1) (2) 6=8Wd3/(GD4)
(3) 6=8WDr i (Gdr) (4) 6=8Wd5/(cD')
90. lf a solid circular bar of diameter d is subjected to a torque T. what is the expression for the
maximum shear stress in the bar ?
(l) 16T /(rdr) (2) 32Tl(ndr) (3) &T /(rd.) (4) 32T /(1td4)
l{ (.{)
Text of page 15
MC/EAi61O
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91. Hook's law in shear gives equatio* in terms of shear stess (t), shear sirain (1) and shear modulus
of rigidity (G) as i. .
(r) r={ct (2) c=rtT (3) t=clf (4) r=Gy
EI 1T
92. If principal stresses are 125 MPidrd 25 MP4 the maximum shea stress is
(l) 150MPa (2) lmMPa (3) 7s MPa (4) s0 MPa
93. At what angle to the principal plhes does the plane of maximum shear stress occur ?
jrr ar (2) e0"' (3) 135. (4) 180.
94. In a Mok's circle, the centse offu circte rcpresents
(l) Maximum shear smss (t-*). (2) Maximum normal strcss (ol)
(3) Minimum nomal stress (o2) (4) (or+ o2)n
E]#Ej
95. The average of norrral stresses (q atd or) act normal to silT.?
EIq
(l) Plane of maximum shear steis (2) Plaoe of minimum shear stress
(3) Botb (l) and (2) (4) None ofthe above
96. If the hoop stress in a rhio rylinder is 30 N/sq.mm, ttea its longiodinal sress is eqlal ro
,-.
( l) 45 N/sq.mm (2) 30 r.rEi.mo (3) l5 N/sq.mm (4) 7.5 Nrsq.mm
97. lfcircumferential strain and loogitudinal strain ofa thin rylindricat shell are 2.1 25 x l0r- and 5 * l0-5
respectivel.v, then its volumetric strain is
( l) 3.75 x l0r4 (2) 2.625x tF (3) 4.75x lf (4) 4.25 x ld
9t. Tte effective lengt of a column of leagdr 'L , effectively held in position at both ends but not
ffi
EITffi
restrained against rotation. is
(l) 0.70L (2) 0.85L (3) r.00L (4) 2.00 L
l5 (A)
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99. The critical load for inelastic buckling ofa column is
(l) less than Euler load (2) equal to Euler load
(3) morc than Euler load (4) equal or grearer than Euler load
ll|0. The sudden bendinS, warping curliag or crumpling ofthe elernen$ ofa member under compressive
soesses is called
(l ) Buckling (2) Crushing (3) Wrinkling (4) Bulging
tr;iE
101. For a square column section of si& 300 mm, the core is a square of side
hffi
11) 150 mm (2) 100 mnt (3) 75 mm (4) 50 mm
102. A built-up column consists of tw'o ISMC chaonels placed back-to-.back with an efective length
of 6.0 m. If the radius of grration about the buckling axis is 160 rnm, the slendemess ratio is
(t) 26.2s (2) 31.88 (3) 37.5 (4) 75
103, In Newtonian fluids, for a given shqar stress, the rate at which rhe fluid deforms is
(I ) Inverxly proponional to the d).Damic viscosity
(2) Directly proportional o the dynamic viscosity
(3) Independent of kinemadc viscosity
(4) None ofthe above
EiiSEi
104. A fluid resiss a shear force by acqgiring
Hff*
(I ) equilibrium deformation (2) uilibrium rate oadeformation
(3) equilibriuo acceleration (4) equilibrium position
105. The presswe difereoce between inside aod outside ofa soap bubble of digmeter d in terms of
trirE
gJrqll surface tension o is
Eli6 (l) o/d (3) 4old (4, Sotd
\2) 2otd
106. Two horizontal plates are placed 12mm apart and tbe space bet$ een them is filledwithal oil of
viscosity of l2 poise. Ifthe upper plate moves with 1.5 mis relociry_. the shear stress in the oil is
(l) 1500 Nlm2 (2) 150 N/m2 (3) 15 N/m2 (4) 1.5 N/m2
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107. Implosion due to collapse ofb-sbbles in a closed conduit flow is related to i6ts ii
i'i{J r
ifli{f
(I ) Water hammer (2) Compressibility
(3) Cavitarion (4) Surface Tension
I 08. For fluids, meniscus between hib liquids in a glass tube is concave upwards or concave downrvards
is due to
(1) Viscosity (2) Surface tension
(3) Vapour pressure (4) Bulk modulus
109. If specific gravity and dynamtli'iscosity of a fluid are 0.9 and 1.8 poise respectively, its kinematic
viscosity is :.:':
.....:
(1) 2.0 mr/s -..;-'. (2) 0.5 m2ls
(3) 0.5 x l0+m2/s (4) 2 x lO+m?/s
il0. "The apparent contradiction iri.the hydrostatic force on the base ofa liquid container and the weight
tri#E of liquid" is related to
ffis (l) D'Alembert's paradox (2) Hydrodynamic paradox
(3) Elevator paradox (4) Hydrostatic paradox
1l I. Which law states that fluid pressure at any point in a stationary fluid has the same magnitude in
all directions ?
(1) Bernoulli's larl ''.,- (2) Newton's law
(3) Archemedes law (4) Pascal's law
ll2. If Barometer reading is 740 riffofmercury and intensity ofpressure at a point is 27.2 m of water,
the absolute pressure at the ptdet is
\1) 27.94 m of mercury (2) 26.46 m of mercury
(3) 2.74 m of mercury (4) 2.21m of mercury
r+E
l13. Which manometer is not suitable to measure negative gauge pressure ?
(l) Piezo meter (2) Simple U tube manometer
(3) Ditrerential U tube manotioter (4) All &e above
l7 (A)
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ll4. An obstn:ction meter with U tube mercury differential manometer is used for measuring discharge
in waterpipeline. If 2 mm error occurs in observing the differential head of 20 mm, the percentage
of error in pressure difference is EiTE
(13t,f:t
(l) 12.6 (2\ 2s.2 (3) 20 (4) l0 tr[i3
115. For an inclined immersed surface of area A and moment of inertia Io, is inclined at 0 angle with
the free surface with the cenkoid at a depth ofy, the depth ofcentre ofpressure (h) from the free
surface is
1r; rr=-ldil'o 1ay (2) h= Io sho +v
A'
(3) h= Io th'e +y (4)
.A'h=I.th'o *u
Ay
116. Centre of pressure is
(l ) Always below the centroid of the submerged plane
(2) Always at the centroid of the submerged plane
(3) Always above the centroid of the submerged plane
(4) Anywhere with respect to the centroid of the submerged plane
I17. In order to have a continuous 6ow through a siphon, what is the maximum height ofthe pipe above
HdE ,tr" Hydraulic Grade Line (HGL) ?
trffi (,) ,.sr. (2) o.i75m (3) 7.60 m (4) 2s.s m
ll8. A lm x lm plate is submerged vertically in water such that its upper edge is at the free surface of
water. The total hydrostatic pressure force on one side ofthe plate is
(l) 4.9kN (2) 9.8 kI{ (3) l5kN (4) 20kN
119. If streamlines in a flow are straight and parallel, it will have EiTtr
11) Both normal and tangential acceleration
Hfs
DELETED
(2) Normal acceleration only.
(3) Tangential acceleration only
(4) No acceleration
t8 (A)
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120.'Afixedormovingregionofspacechosenforanalysisthroughwhichfluidflows'iscalled
(l) Rigidbody (2) Control volume
(3) Control surface (4) Continuum
trifiE
l2I. The energy correction factor u, for turbulent flow through circular pipes is trLtt
tllntl
(r) r.0s (2) 1.33 (3) 2.00 (4) Zero
122. If diameter ofa pipe and average velocity for a water flow are 0.3 m and 2-5 m/s respectively, tle
flou regime u ill be
(l ) supercritical (2) subcitical (3) laminar *urt.r,
Fq)
t23. Each term in the Bernoulli's equation is representing
(1) Force unit mass (2) Impulse per unit weight
(3) Energy per unit weight (4) Eoergy per unit mass
124. The loss of energy in Orifice meter is more than in the case of Venfirrimeter because of
tr
(1) Pressure variation ,) tr
Turbulence
(3) More friction (4) Sudden obstnrction
125. Velocity of a flowing liquid canaix be considered as constant for the entire cross section for
(l) Small orifice
2) Large vertical orifice
(3) Circular orifice having head five times greater than its diameter
(4) Totally submerged orifice
126. For a small orifice, velociry ofjetatVena Contracta is
(t ) Equal to ideal velocity (2) Higher than ideal velocity
(3) Less than ideal velocity (4) None ofthe above
127. lfthe length ofa mouthpiece is less or nearly equal to its diametq then even at lo*' heads it w'ill
E] behave as
1) ori ce (2) convergent-divergent mouthpiece
(3) intemal mouthpiece (4) none ofthe above
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128. If a vertical cylindrical tank is completely emptied tkough mouthpiece then the time of emptying
is directly to proportional to
(l) c/s area ofthe mouthpiece (2) vertical c/s area ofthe tank
(3) square root of initial head (4) initial head
129, For sharp edged orifices discharging water, the average coefficient of velocity can be assumed as
(l) 1.00 (2) 0.98 (3) 0.85 (4) 0.65
tr#tr
130. What is the main advantage of usilg a V-notch over a reclangular notch ?
Hs*
(I ) It can measrre higher dischargcs more accurately
(2) It is easier to construct than a rectangular weir
(3) It gives better accuracy for measuring small diseharges
(4) lt does not require a coefficient of discharge
131, For flow over a broad-crested weir, the depth offlou'at the crest for maximum discharge is
(l) Equal to approach depth (2) Equal to critical depth
(3) Equal to normal depth (4) Half of the approach depth
132. The head loss due to sudden enlargement in a pipe flor+', w'hen the velocitv of florv changes Aom
EI Vr to V2 is given by
(l) (Y-v,)
r 'l (v, -v,) 2 vr')
( vr'2 )
(2) (3) (4)
)o )o )o
133, In a pipe flow. the significant head loss due to sudden contraction occurs because of
Ef;B
(i3{f+
ET+.
(I ) Veloci change from larger pipe section to the smaller section
(2) Sudden expansion beyond vena contracta
(3) Friction at the pipe walls
(4) Fonnation of eddies in the larger pipe
134. The Darcy's coefficient of friction for a pipe flow having Reynolds number of 640 is equal to
(l) 0.1 (2) 0.64 (3) 0.0fl (4) 0.0r
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135. The entrmce leogtt or length ofeablisblmt of laminar flow in pipes is
(l) Inversely proportiooal to pii?.laiaoetcr (2) Proportiooal to Reynolds number (Re)o 35
(3) Proportional to Re (e) Proportioral to Ge)2
136. For a fluid of mass density p aadlgving with v mem velocity, the coe6cient of friction in terms
ffiof shear suess (to1 is giveo by
(l) f= 2vrto (2) f=2l"geet (3) f=rov,/@p) (4\ t:r,6tl (2'l)
137, For a steady florv of a liquid through converging, the piezometric grade line
(l) parallel to datum line (2) slopes do*n*'ard
(3) slopes upward (4) parallel to total energy line
13t. For pipes in series, the equivalent pipe for turbulent flow satisfies
(l) L.q/Ds{=tli/Di5 (2) t/(L/trq)=rt(LilDis)
(3) L.q/{q= LLi/Di4 (4) l(Loq/ttq) - Lr,(LilDi4)
139. For a pipe of dia D, length L anil"fiiction factor [, the nozzlc dia for maximurn transmission of
ffi **"''t"o*' t;4
'o
\V{ (o'\ (D'\"
(l) /t_to') (2)
D4
(3) (4)
[+rJ 8fl ) Ia.l Iss.l
I 40. For a rigid pipe, the maximum p!$ure rise (due to sudden closure of valve) is independent of
(l) Velocity of liquid (2) Bulk modulus of liquid
(3) Mass density of liquid (4) Pipe dimensions
E}5E}
141, The pressutt drop in a laminar ffifi rhrough circular pipe is dependant on
(l) Velocity offlow (2) Viscosity of the fluid
ffi
(3) Diameter of the pipe (4) All the above
142. A liquid jet of 30 n/s velocity is sBting a series offlar plates For maximum efrciency, the velocirv*
ofthe vane should be
(l) 30 m/s (2) 20 rn/s (3) 15 m/s (4) l0 mrs
7t iAl
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143. A jet of water strikes a curved vancrirh that the whirl velocity compooents at the inlet md outlet
are 19.62 m/s and 9.81 mrs respectivcly. Tbe ahsolute velocity ofthejet leaving the vane nukes
an angle of 45'wirh the direction ofvane motion. Taking vane velocity as 5 m/s, the work dooe
by the jet on the vane is
'i-r:
(l) ls NrnN (2) 5 NmN (3) l9.62Nmll,{ (4) 9.81 Nrn/N
EiTEI
1,14. The force exeded by tbe jel of rater on a semicircular plate (s;-mmetrical) is
(l) Half Sat of tbe flat plate (2) Equal to that ofthe flat plate
ffi
(3) Twice that of the flat plate (4) Force is oullified
145. A Pelton turbine witb nine nozzleso[As specific speed of 36. The specific speed per nozle is
(l) 36 (2) t2 (3) 4 (4) 3
I45. The draft tube in a reaction turbine ,,
( l) Discharges water at atmospheric pressure
1 Reduces veloci head and iocreases ssure head
(3) Eliminates u hirl component at exit
(4) Controls cavitation
147. For a Francis urrbine, if the flow ratio and the speed ratio are 0.3 and 0.9 respectively, the ratio of
the peripheral velocity ofrhe wheel !o the radial velocity offfow is
(l) 4 t (r)t 1 {3) 2 (4) I
148, lf Thomas' cavitation factor is less dga the critical cavitation factor, then the overall efficiency of
a reaction turbinc will have
(l) aboormat increase (2) no change
(3) sharp fall (4) gradual increase
tri+EI
gltrFt
149. locreasing rotodlmmic pump specd while keeping suction conditions conshot
EIiffi
( 1.1 Reduces chance of cavitation (2) Iacreases chance of cavitation
(3) Has no effect (4) Reduces NPSH required
1S). Work done per second per unit weirfu of water by each impeller of a 3-sage centrifugal pump is
40 Nrn'N. If the manometric efficiency of the pump is 0.9, the total head generated by the punp
(l) I0E m (?) 120 m 13) 133 m (4) 12m
22 (.{}
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23 (A)
Official key not published for this paper.
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Source: Andhra Pradesh Public Service Commission. Question paper published by Andhra Pradesh Public Service Commission.