MPPSC AE 2020: State Engineering Service Examination, Mechanical Engineering
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SEE/ME/2020
SET
A (Mechanical Engineering)
"Candidate should write his/her
Roll No. in the given boxes
of Printed Pages:32 ^^R^^Wsin/Total No. of Questions:150O
0Wl/Time:S^Ti^/Hours ^JJirf^/Total Marks: 4500
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SEE/ME/2020-A 1
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SECTION-A
1. Malanjkhand is famous for which of the 5. Vindhyachal Super Thermal Power
following mineral ? Station is established in which of the
following district ?
(A) Bauxite
(A) Shahdol
(B) Copper
(B) BetuI
(C) Dolomite (C) Umaria
(D) Limestone (D) Singrauli
2, Bansagar Project is situated on which of 6. Number of moveable joints in robot is
the following river ? called
(A) Ken
(A) Degree of independence
(B) Betwa
(B) Degree of joints
(C) Son
(C) Degree of freedom
(D) Dhasan
(D) Degree of movement
3, In Madhya Pradesh, which of the
following resources has the highest 7. Technique to verify message integrity is
established capacity among the known as
non-conventional sources of energy ?
(A) Message encrypt
(A) Wind energy
(B) Message checksum
(B) Solar energy
(0) Biomass energy (0) Message digest
(0) Energy from garbage (D) None of the above
4. Which of the following sources has 8. is a software program that
highest proportion of irrigation in Madhya filters all the data coming through the
Pradesh ? internet.
(A) Canals (A) Antivirus
(B) Tanks
(B) Cookies
(C) Wells-tubewells
(C) Malware
(D) Other sources
(D) Firewall
SEE/ME/2020-A [ PT.O.
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9. Infrastructure aspects provided by 12. Which of the following Is a famous
Government in formation of National folk-drama of Malwa ?
e-Governance Plan for application and (A) Hingola
data hosting and connectivity are
(B) Chhahur
(C) Mansukha
(A) SDC. SWAN and ESDG
(D) Maach
(B) SWAN,SDC and NIC
13. What was the ancient name of
(C) SWAN,SDLC and NISG
Baghelkhand ?
(D) None of these (A) Karush
(B) Mahishmati
(C) Teerbhukti
(D) Shuktimati
10. The scope of cyber security is
(A) Vulnerability reduction 14. The famous Chandela Generals AIha
and Udal lost their lives while fighting
(B) Incident response against which ruler ?
(A) Ajayraj
(C) Recovery policy
(B) Arnoraj
(D) All of the above (C) Sindhuraj
(D) Prithviraj Chauhan
11. Which of the following folk-dance is not
associated to Nimari folk-dance ?
15. Which ofthefollowing is nota composition
of Pandit Makhanlal Chaturvedi ?
(A) Gangour
(A) Himkiritani
(B) Rai (B) Bijuri
(C) Kathi (C) Himtarangini
(D) Fefariya (D) Rasikpriya
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16. On what dates were the Olympic Games 19. On which date the National Education
held in Tokyo ? Policy 2020 was launched by the
Government of Madhya Pradesh ?
(A) 21 July to 5 August 2021
(A) 16 August 2021
(B) 22 July to 10 August 2021
(B) 26 August 2021
(C) 22 July to 11 August 2021
(C) 28 August 2021
(D) 23 July to 8 August 2021
(D) 30 August 2021
17. Where is the 2024 Olympic Games
Scheduled to be held ? 20. How many gold medals did the Indian team
win in the Paralympics held in 2021 ?
(A) Paris
(A) 5
(B) London
(B) 6
(C) Johannesburg (C) 7
(D) Budapest (D) 19
21. Rain occurs in the month of August in
18. On which date the Arogya Setu App was
Madhya Pradesh is mainly receives from
launched by the Government of India ?
which of the following ?
(A) 17 June 2021 (A) North-Eastern Monsoon
(B) 17 January 2021 (B) South-Western Monsoon
(C) 2 April 2020 (C) Winter Monsoon
(D) 14 March 2020 (D) Cyclonic Rain
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22. According to the Government of Madhya 26. Who among the following is not a
Pradesh,what percentage of thefollowing Bundeli writer ?
area is under protected forests out of the
(A) Jagnik
total forest area ?
(A) 45.6% (B) Maharaj Vishwanath Singh
(B) 44.6% (C) Isuri
(C) 32.8% (D) Gangadhar Vyas
(D) 70.2%
27. In which district of Madhya Pradesh.
23. Which of the following mountain range is Jageshwari fair is organized ?
situated between Narmada-Tapti rivers
and South of the Son river ? (A) Satna
(A) Kaimur range (B) Ashok-nagar
(B) Bhander range
(C) Balaghat
(C) Vindhyachal range
(D) Satpura-Maikal range (D) Badwani
24. Which is the origin of the West direction 28. Which revolutionary was hanged by the
flowing river Tapti (Tapi)? British Government during the Bundela
rebellion ?
(A) Shahpur
(A) Madhukar Shah of Narhot
(B) Chicholi
(B) Bandeshah of Bhanpur
(C) Bhainsdehi (C) Jujhar Singh of Herapur
(D) Multai (D) None of these
25. Which of the following Is the share of
Madhya Pradesh in the total manganese
the creater of the Universe ?
production of the country ?
(A) Thakurdev
(A) 18.84%
(B) Indradev
(B) 15.02%
(C) 12.50% (C) Agnidev
(D) 4.56% (D) Somdev
SEE/ME/2020-A [P.T.O.
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30. Thefamous artist Annasaheb Raghunath 33. Which of these is used as CPU in
K. Phadke is associated with which of computer ?
the following art ?
(A) Microprocessor
(A) Sculpture (B) Microcontroller
(B) Dance (C) Microcomputer
(0) Music (D) Microprogrammer
(D) Painting
34. How many megabytes represent one
gigabyte (in binary)?
31. Which of these is not an open source (A) 2048
Operating System ? (B) 1024
(A UNIX (0) 1024x1024
(D) 1048
(B) ANDROID
(0) WINDOWS 35. The space in which a robot operates is
called
(D) None of these
(A) Environment
(B) Spatial space
(0) Workspace
32. (1101 0001)2 binary number is same as (D) Work envelope
( )«octal number.
36. In which Article of the Constitution, the
A 321
function of the Council of Ministers is
said to "Assistance and Advise" the
B 123 Governor ?
(A) Article-162
(C) (641) (B) Article-163
(C) Article-164
D 146 (D) Article-165
SEE/ME/2020-A [ P.T.O.
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37, What is the level of Panchayati Raj 41. In which year the Sports Authority of
System in Madhya Pradesh ? India was established ?
(A) Two tier
(B) Three tier (A) 1976
(C) Four tier
(B) 1981
(D) None of these
(0) 1984
38. The scheme One Stop Center (Sakhi)
is related with (D) 1991
(A) Providing facilities to women victims
of violence
(B) Providing ration
(0) Self employment
(D) Skill and training 42. When was the 'Ladii Lakshmi Yojna'
started by the Government of
39, The lowest population density district of
Madhya Pradesh is Madhya Pradesh ?
(A) Jhabua (A) 1 April 2006
(B) Mandia
(B) 1 April 2007
(0) Dindori
(D) Sidhi (C) 1 April 2008
(D) 1 July 2006
40. Arrange the following district of Madhya
Pradesh in descending order of sex
ratio and select the correct answer from
below codes.
1. Mandia 43. When was the Chief Minister's Women
2. Dindori Empowerment Scheme started in
3. Alirajpur Madhya Pradesh ?
4. Balaghat
(A) April 2012
Codes:
(A) 1.2.3,4 (B) July 2012
(B) 4,3,1,2
(C) September 2013
(C) 2,1,4,3
(D) 3,4,2,1 (D) November 2013
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44. From which date the present Governor of 47. In a year 2005-06, average size of
Madhya Pradesh Shri Mangu Bhai Ch. agricultural holding in Madhya Pradesh is
Patel has taken over ? (A) 1.28 Hectare
(A) 03 July 2021 (B) 2.22 Hectare
(C) 1.8 Hectare
(8) 13 July 2021
(D) 2.25 Hectare
(C) 08 July 2021
(D) 28 July 2021 48. Which district irrigated by "BenGanga'
Canal in Madhya Pradesh ?
(A) Jabalpur
(B) Mandia
45. In which famous place Jyotirling
Mamleshvar is situated ? (0) Sidhi
(D) Balaghat
(A) Mandsour
(B) Omkareshvar 49. Soil Health Card is related with
(C) Kapil Dhara (A) Use of balanced fertilizer
(B) High yields
(D) Ujjain
(C) Soil test
(D) All of the above
46. When was Chief Minister Krishak
Udhyami Yojana launched ? 50. Lowest female literacy rate district in
Madhya Pradesh is
(A) Year 2016-2017
(A) Jhabua
(B) Year 2017-2018
(B) Atirajpur
(C) Year 2018-2019 (C) Sheopur
(D) Year 2019-2020 (D) Barwani
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^- WSECTION - B
51. An oil of specific gravity 0.9 is flowing 54. In case of turbulent flow through pipe, the
inside a pipe at a velocity of 3 m/s at loss of pressure head is approximately
pipe diameter of 25 mm. The mass flow proportional to (velocity)", where n is
rate at another location where diameter
(A) 1
is reduced to 20 cm will be
(B) 2
(A) 125.25 Kg/s
(0) 3
(B) 132.23 Kg/s
(D) 4
(C) 118.20 Kg/s
(D) 112.18 Kg/s 55. The square root of ratio of inertia force
of a flowing fluid to the surface tension
force is
52. The three-dimensions continuity equation (A) Froude's number
in Cartesian co-ordinate system for (B) Euler's number
incompressible fluid is (C) Weber's number
(A) |-{pu)
dx
+|-(pv)
5y
+|-(pw)
dz
=0 (D) Mach's number
(B) ^+^+^=0 56. Which of the following is not a
dx dy dz programming language ?
(A) ADAPT
=° (B) EXAPT
(C) INAPT
(D) MINIAPT
53. A water Is flowing at a velocity of 57. In which of the following sector,
3 m/s through a pipe of diameter 30 cm Automated Guided Vehicles(AGVs)
and length 50 m. If kinematic viscosity is are used extensively to move parts
0.01 X 10^ m^/s, the head lost due to and to orient them as required ?
friction using Darcy formula is
(A) Flexible manufacturing system
(A) 78.28 cm
(B) 80.25 cm (B) Group technology
(0) 69.25 cm (C) Cellular manufacturing
(D) 75.28 cm (0) Agile manufacturing
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58. Which is a concept that seeks to 62. In transportation model, if the number
take advantage of the design and of row + the number of columns - 1 is
processing similarities among the not equal to the number of occupied
parts to be produced ? squares, then it is the case of
(A) Flexible manufacturing system (A) Dummy sources
(B) Group technology (B) Dummy destinations
(C) Cellular manufacturing (0) Dummy activity
(D) Agile manufacturing (D) Degeneracy
59. What is the basis of modern 63. In forecasting, the mean absolute
deviation expresses
Computer-Aided Design System ?
(A) ICG (A) Gross error
(B) GCI (B) Direction and magnitude of the error
(C) GIF (C) Direction of the error
(D) IGC (D) Magnitude of the error
64. System efficiency is expressed as
60. Which of the following is not a part
ratio of
of Computer-Aided Design (CAD)
(A) Actual measured output to the
hardware ?
designed capacity
(A) A graphics terminal
(B) Actual measured output to the
(B) Secondary storage installed capacity
(C) Computer programmes (C) Actual measured output to the
system capacity
(D) Plotters
(D) Actual measured output to the rated
capacity
61. In linear programming problem,the term
which is not involved is 65. One of the characteristics of the queuing
system is
(A) Objective function
(A) Customers feedback
(B) Linear scale
(B) Hungarian mechanism
(C) Linear constraints
(C) Customer experience
(D) Decision variables (D) Service mechanism
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66. A steel bar is subjected to an axial pull 69. An air vessel has circumferential stress
of 84 kN. Stress induced into the bar of 267.75 N/mm^; longitudinal stress
is 140 N/mm^. If Young's modulus is of 133.875 N/mm^ ; value of Young's
2 xIQS N/mm^, then the longitudinal modulus E = 2.1 xlO^N/mm^,Poisson's
strain produced will be ratio m = 0.3: value of the circumferential
strain will be
(A) 0.0002
(B) 0.0003 (A) 0.0005090
(8) 0.001084
(C) 0.0006
(C) 0.0002050
(D) 0.0007
(D) 0.002040
67. Maximum flexural stress for a cast iron
pipe having maximum bending moment
70. Metal bar A8 is subjected to a tensile load
125000 N-mm and section modulus
of50 kN. Ifs length is 600 mm and cross-
17017 mm^ will be
sectional area is 1000 mm^. If value of
(A) 17.23 N/mm2 Young's modulus E = 1.05 x10^ N/mm^;
(8) 7.34N/mm2 then extension of that metal bar due to
the tensile load is
(C) 9.21 N/mm2
(A) 0.4916 mm
(D) 14.32 N/mm2
(8) 3.2916 mm
(C) 0.2857 mm
68. Steel column pinned at both ends has
modulus of elasticity E = 2 x 10^ N/mm^, (D) 4.3164 mm
moment of inertia I = 90000 mm^,
/ = 1.75 m, value of Euler's critical load 71. Unit of thermal diffusivity in SI units
will be
system
(A) 75000 N
(A) m^/s
(8) 72000 N
(8) m2/s
(C) 88000 N
(C) m/s
(D) 58009 N
(D) W/mK
SEE/ME/2020-A
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72. Effectiveness of Infinitely long fin is given 75. The role of number is the same
by in free convection as that of Reynolds
(where, P = Fin parameter, K = Fin number in forced convection.
thermal conductivity, h = Convective (A) Prandtl
heat transfer coefficient, = Fin cross-
section area) (B) Grashoff
(C) Fourier
(D) Biot
rw
(B) 76. For a cantilever beam of length / carrying
a concentrated load W at free end,
the shear force and bending moment
diagram will be
(A) Triangular and Rectangular
P
respectively
h.K.A.
(B) Rectangular and Triangular
respectively
73. number is a connecting link
(C) Triangular and Triangular
between velocity and temperature field
respectively
and its value strongly influences relative
growth of velocity and thermal boundary (D) Rectangular and Rectangular
layers. respectively
(A) Reynolds
(B) Grashoff
77. Torque transmitted by a solid circular
(C) Prandtl shaft of diameter d, subjected to shear
(D) Biot stress fs is given by
74. In transient heat conduction, two (A)
significant dimensionless parameters
are number and
number. (B)
(A) Biot; Reynolds
(B) Biot; Prandtl (C)
(C) Reynolds: Grashoff
(D) Biot; Fourier (D) ^fe.d^
SEE/ME/2020-A
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78. When both ends of column are pinned 82. Inacyclicheatengine,sourcetemperature
or hinged, buckling load equation is is 800°C and sink temperature is 30°C:
given by its maximum efficiency will be
(A) 65.4%
(B) 68.5%
(C) 71.8%
(D) 54.5%
83. In a compression process, initial
temperature is 308 K; if compression
ratio is 8; temperature at the end of
compression will be
(A) 823.5 K
(B) 691.3 K
79. Maximum principal stress theory is
proper choice for (C) 910.3 K
(A) Brittle Materials (D) 708.4 K
(8) Ductile Materials
84. Machine containing fluid system has a
(C) Fragile Materials
stirring device in the cylinder. Stirring
(D) Composite Materials device is turned 10,000 revolutions
with an average torque against fluid of
1.275 N-m, then work done by stirring
80. For 100 kN tensile test of mild steel bar
device on system will be
of 30 mm diameter, stress induced in the
bar is
(A) 173 KJ
(A) 103.81 N/mm2 (B) 110 KJ
(B) 252.61 N/mm2 (0) 90 KJ
(D) 80 KJ
(C) 141.47 N/mrT)2
(D) 365.37 N/mm2
85. Certain gas has mass of 2 kg;
Cp = 1.968 KJ/KgK. Initial temp,
81. In throttling device, t., = 5°C; final temp, tg = 100°C; change
(A) Enthalpy of fluid before and after in enthalpy of the gas will be
throttling are not equal
(A) 373.92 KJ
(B) Enthalpy of fluid before and after
throttling are equal (B) 437.32 KJ
(0) Work is converted into heat (C) 568.44 KJ
(D) Heat is converted into work (D) 418.21 KJ
SEE/ME/2020-A
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86. The natural frequency of free torsional 90. What is Hammer blow ?
vibrations of a shaft is equal to . (A) It is the maximum horizontal
(where q = Torsional stiffness of the unbalanced force caused by the
shaft and I = Mass moment of inertia of mass provided to balance the
the disc attached at the end of a shaft.) reciprocating masses
(B) It is the maximum vertical unbalanced
(A) force caused by the mass added to
balance the reciprocating masses
(B) 2i[ql
(C) It is the minimum horizontal
unbalanced force caused by the
2n\ I mass provided to balance the
reciprocating masses
(D) None of the above
87. Ackerman steering gear consists of
91. Which of the following combustion
(A) Sliding pairs
chamber requires multiple hole injection
(B) Turning pairs
nozzles for proper mixing of fuel ?
(C) Rolling pairs
(A) Divided combustion chamber
(D) All of the above
(B) Open combustion chamber
88. When the perfectly elastic belt is (C) Precombustion chamber
stationary, it is subjected to some (D) M-combustion chamber
tension known as initial tension. The
value of this tension is equal to .
(Neglecting centrifugal tension.) 92. In order to overcome problem of exhaust
(A) Tension in the tight side of the belt gas dilution and low charge density,
(B) Tension in the slack side of the spark advance must be increased at
belt (A) Full load operation
(C) Sum of the tensions on the tight side (B) No load operation
and slack side of the belt
(C) Part load operation
(D) Average of the tensions in the tight
side and slack side of the belt (D) None of the above
89. When the axes of the first and last wheels
93. Solar radiations received from sun
of compound gear coincide, then the
without change of direction are called
train Is known as
(A) Diffused radiation
(A) Reverted gear train
(B) Simple train of wheels (B) Beam radiation
(C) Planetary gear train (C) Global radiation
(D) Epicyclic gear train (D) None of the above
SEE/ME/2020-A
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94. Gas produced by organic waste digester 98. Saturated steam at 100°C is
is known as condensing on shell side of a shell
(A) Producer gas and tube heat exchanger. The cooling
(B) Biogas water enters the tube at 30°C and
(C) Hydrogen gas only leaves at 70°C. Calculate arithmetic
(D) Natural gas mean temperature difference in
counter flow arrangement.
95. In a reaction turbine, drum diameter is
(A) 47.21°C
1 m and blades are at 10 cm high.
If speed of turbine is 250 rpm, then (B) 50°C
blade speed will be
(C) 45.20°C
(A) 21.3m/s
(D) 50.5°C
(B) 14.4 m/s
(C) 38.4 m/s
(D) 72.2 m/s 99. For a hemispherical furnace, the flat
floor is at 700 K and has an emissivity of
0.5. The hemispherical roof is at 1000 K
96. Metals and gases respond rapidly to
and has an emissivity of 0.25. Find the
temperature changes as compared to
non-metals and liquids due to magnitude of net radiative heat transfer
between the roof and floor.
(A) High thermal conductivity
(B) Low thermal diffusivity (A) -12310.4 W/m2
(C) High thermal diffusivity (B) 12340.5 W/m2
(D) High heat capacity (C) 12345.6 W/m2
(D) 12346.5 W/m2
97. The flow rates of hot and cold water
streams running through a parallel
flow heat exchanger are 0.2 Kg/sec 100. Assuming the sun to be a black body
and 0.5 Kg/sec respectively. The inlet emitting radiations with maximum
temperatures on hot and cold sides intensity a\X = 0.49 pm. Calculate the
are 75°C and 20°C respectively. The
heat flux at the surface of the sun.
exit temperature of hot water is 45°C.
Calculate LMTD of heat exchanger. (A) 5.9x107W/m2
(A) 32''C (B) 6.93x107W/m2
(B) 40.5'^C
(C) 4.93x10^W/m2
(0) 29.12X
(D) 45.24°C (D) 7.93x103W/m2
SEE/ME/2020-A
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101. What is the relationship between CAD 106. If the cutting conditions in a turning
and CAM ? operation are
(A) Science and Technology
Cutting speed = 300 ft/min.
(B) Manufacturing and Marketing
Feed = 0.010 in/rev. and
(C) Design and Marketing
(D) Design and Manufacturing Depth of cut = 0.100 in,
which one of the following is the material
102. Which are the three basic types of motion removal rate ?
control systems in numerical control ?
(A) Point to point, straight cut and (A) 0.025 in^/min.
contouring
(B) 0.3 in^/min.
(B) Point to point, edge to edge and
straight cut (C) 3.0 in^/min.
(C) Point to point, edge to edge and
contouring (D) 3.6 in^/min.
(D) Straight cut, edge to edge and
contouring 107. A roughing operation generally involves
which one of the following combinations
103. What is the M-code for tool change in of cutting conditions ?
CNC?
(A) M05 (where v = cutting speed, f = feed and
(B) M06 d = depth.)
(C) M10 (A) high v, f and d
(D) M12 (B) high V, low f and d
104. Which type of welding use industrial robots (C) low V, high f and d
extensively to perform operations ? (D) low V, f and d
(A) Spot welding
(B) MIG welding
(C) TIG welding 108. In a turning operation, the change in
(D) Thermit welding diameter of the work part is equal to
which one of the following ?
105. What type of solution is obtained by finite
(A) 1 X depth of cut
element analysis ?
(A) Absolute (B) 2 X depth of cut
(B) Approximate
(C) 1 X feed
(C) Average
(D) Discrete (D) 2 X feed
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Text of page 24
109. Which one of the following cutting tools 113. The maximum retardation of a flat faced
cannot be used on a turret lathe ? follower, when it has contact at the apex
(A) Broach of the nose of a circular arc cam,is given
by .
(B) Reaming tool
(where OQ = Distance between the
(C) Drill bit centre of circular flank and centre of
(D) Single-point turning tool nose.)
(A) 0)2x00
(8) 0)2 X GO sin0
110. In ECM, metal removal rate (C) 0)2 X 00 COS0
(A) depends on the hardness of the (D) 0)2 X 00 tan0
tool
(B) depends on the hardness of the job114. The natural frequency of free transverse
metal vibrations due to a point load acting over
a simply supported shaft is .
(C) is independent of the hardness of
(where 5s is static deflection of simply
the tool and work piece
supported shaft due to load.)
(D) All of the above
(A) 0.4985/n/^
(B) 0.5615/
111, For simple harmonic motion of the (C) 0.57-[/4^
follower, a cosine curve represents (D) 0.6253/7^
(A) Displacement Diagram
115. In a band and block brake, the ratio of
(B) Velocity Diagram tensions on tight side and slack side of
the band is .
(C) Acceleration Diagram
(where p = coefficient of friction
(D) All of the above between the block and drum,
0 = Semi-angle of each block
subtending at the centre of drum and
112. Whirling speed of the shaft is the speed
n = Number of blocks.)
at which
(A) Shaft tends to vibrate in longitudinal
(A) T„ ["(l + ntane)]"
direction
To [(1-ntane)
(B) Torsional vibrations occur (B) ^
'o
= n.e.n
(C) Shaft tends to vibrate vigorously in Tn Rl-ntane)'!"
transverse direction
To (1 + ptane)
(D) Combination of transverse and
(1 + ptan0)
longitudinal vibration occurs
(1 - ptanG)
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116. Gantt chart is used for 121. In EDM process, work piece is generally
(A) Resource management connected to
(B) Production scheduling (A) Positive terminal
(C) Large number of tasks
(D) One time update (B) Negative terminal
(C) Earth terminal
117. Dispatching is a part of
(A) Planning phase (D) Neutral terminal
(B) Action phase
(C) Control phase 122. Which one of the following is the chip
(D) Development phase thickness ratio ?
(where, t^ = chip thickness after the cut,
118. The 4M's basically involved in production = chip thickness before the cut,
planning are
f = feed, d = depth and w = width of
(A) Material, Methods, Maintenance,
Manpower cut)
(B) Material, Measurement, Machines,
Manpower
t.
(C) Material, Methods, Machines,
Manuals
(D) Material, Methods, Machines, (B) r =
t.
Manpower
119. The goods that do not vanish after a (C) r =^
d
single act of consumption is
(A) Non-durable consumer goods (D)
V' r = W
(B) Single use consumer goods
(0) Perishable consumer goods
123. Of the following process, which one is
(D) Fast moving consumer goods noted for the excellent material removal
rates ?
120. Production Control involves (A) Electric discharge machining
(A) Inventory Management
(B) Laser beam machining
(B) Time Management
(C) Vendor Management (C) Plasma arc cutting
(D) Inspection (D) Ultrasonic machining
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124. process is used for making a 128. A gas is flowing through a horizontal
complicated contour in carbide piece. pipe with mass flow rate of 0.5 Kg/s
(A) Laser machining and Gas constant 292 N-m/Kg°K. The
(B) Eiectro-chemicai miiiing parameters at two different section of
the pipe (1 and 2) are; At section 1, the
(C) Piasma arc machining
cross section is 40 x 10"^ m^, pressure
(D) Eiectro-discharge machining is 50 X lO'^ N/m^ and temperature is
15°C, At section 2, the cross section is
125. Which one of the foliowing is closest to
20 X1 nrf and pressure is40 x 10* N/m^.
the temperatures used in plasma arc
cutting ? The velocity of gas at section 1 is
(A) 2750°C (5000°F) (A) 21.02m/s
(B) 20.01 m/s
(B) 5500°C(10000°F)
(C) 21.09 m/s
(C) 8300°C(15000°F)
(D) 22.05 m/s
(D) 11000°C(20000°F)
129. One of the observation made
126. The displacement thickness (5*) for the
by O. Reynold in 1883 is
velocity distribution in boundary layer is
by (u/U) = (y/6), where u = velocity at (A) When the velocity of flow was low,
distance y from the plate and u = U at the dye-filament in the glass tube
y = 8. If 8 is boundary layer thickness, was randomly distributed
then 6* is (B) With the increase of velocity of flow,
the dye-filament was in the form of
(A) 8/2
straight line
(B) 8/3
(C) The straight line of dye filament
(C) 8/4 parallel to the glass tube was the
(D) 8/6 case of laminar flow
(D) With further increase of velocity
127. The Bernoulli's equation for adiabatic of flow, the dye-filament fails to
process and compressible flow is produce shear stresses
_P_ +^+z = constant 130. The maximum hydraulic efficiency of a
K-1jpg 2g Pelton wheel for hydraulic efficiency =
(B)( -^+ — +z = constant 2(Vw^ + )X u/V^^ with conventional
'' I K jpg 2g notations is
2
(A) (1 - Cos (}))
(C) (K -1)-2-+ — +z= constant
^ ^ ^ ^pg 2g (B) (1 + Cos (j))
2 (0) (1-Cos(t))/2
(D) (K)-^+ — +z= constant (D) (1 + Cos (^)/2
^ >g 2g
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131. Thestressesatapointonthedrcumference 134. The Bolts in a flange coupling are
of a circular rod in tension and shear designed
are 120 MPa and 60 MPa respectively. (A) Under tensile stresses
If the yield strength of the rod material is (B) Under shearing stresses caused by
340 MPa, the factor of safety in the rod torque transmitted
material using maximum shear stress (C) Under shearing stress which will
theory is nearly equal to develop force to cause torque to be
(A) Factor of safety = 2.0 transmitted
(B) Factor of safety = 4.0 (D) By empirical formula
(C) Factor of safety = 2.5 135. Which of the following statements are
(D) Factor of safety = 3.0 correct ?
Consider the following statements :
A splined shaft is used for
132. The shock absorbing capacity of a bolt
is increased by 1. transmitting power
(A) Preventing stress concentration 2. holding a fly wheel rigidly in
position
anywhere in the bolt
3. moving axially the gears mounted
(8) Making shank diameter equal to the on it
core diameter
4. mounting V-belt pulley on it
(C) Use a spring washer
(A) 2 and 4
(D) Proper tightening
(B) 1 and 3
133. For the bracket bolted as shown with
(C) 1 and 4
4 bolts P, Q, R and S. Which of the (D) 3 and 4
bolts are heavily loaded ?
136. Chemically correct air fuel ratio for SI
Engine is
(A) 6:1
PO OQ (B) 15:1
(C) 5:1
+
SOOR (D) 4:1
137. Time lag between first ignition of fuel
and the commencement of main phase
of combustion is called as
(A) PandQ
(A) After burning
(B) PandS (B) Flame propogation
(C) S and Q (C) Pre-ignition
(D) QandR (D) Ignition lag
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138. In SI engine, increase in intake 142. The system in which both mass of matter
temperature and pressure causes and energy transfer takes place is called
as
flame speed to
(A) Isolated system
(A) Increases
(B) Closed system
(B) Decreases
(C) Open system
(C) Both increases and decreases
(D) All of these
(D) Can not be predicted
143. Which of the following is an intensive
139. In SI engine,compression ratio increases property ?
causes to (A) Volume
(A) Decreases knocking tendency (B) Mass
(B) Increases knocking tendency (C) Energy
(C) May increase or decrease knocking (D) Temperature
(D) None of the above
144. According to Kelvin - Plank statement
140. In C1 engine, delay period increases (A) It is impossible to construct a
device which operates in a cycle
(A) With decrease in injection advance
and produces no effect other than
angle transfer of heat from a cooler
(B) With increase in injection advance body to hotter body
angle (B) It is impossible for a heat engine
(C) Maintaining zero injection advance to produce net work in a complete
angle cycle if it exchanges heat only with
bodies at a single fixed tap
(D) None of the above
(C) Heat can be converted into work
(D) Work can be converted into heat
141. The properties which are independent
of mass in the system are called
145. Brayton cycle is an air standard cycle for
(A) Extensive properties
(A) Thermal power plant
(B) Intensive properties
(B) Diesel engines
(C) Homogeneous properties (C) Otto (S.I.) engines
(D) None of these (D) Gas turbine power plant
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146. A shaft is subjected to the combined 149. A single plate clutch has outer and inner
bending load 'M' and torsional load T. radii 50 mm and 20 mm respectively. An
If the permissible shear stress is the axial clamping force required to engage
diameter'd' of the shaft will be calculated
the clutch is 2 kN and coefficient of
by the relation
friction between liner material is 0.4, the
(A) d=16T/7cC torque carrying capacity of the clutch
using uniform wear theory is
(B) d = 32M/7cd3
(C) d =[16(M2 + T2)i/2/jj^]i'3 (A) 56 Nm
(D) d =[32(M2 + (8) 28 Nm
(C) 0.056 Nm
147. A shaft is subjected to combined bending (D) 0.028 Nm
and torsional moments of 6 kN-m and
10 kN-m respectively. The equivalent
torque will be equal to 150. Match List-I with List - II and select the
(A) Vl 36 kN-m correct answer using the codes given
below the lists.
(8) 16 kN-m
List -1 List - II
(C) Vl6kN-m
J. Single-plate clutch 1. Scooters
(D) 8 kN-m
K. Multi-plate clutch 2. Rolling mills
L. Centrifugal clutch 3. Trucks
148. The ratio of inner and outer radii of
the friction lining of a plate clutch M. Jaw clutch 4. Mopeds
for maximum power transmission
condition is Codes
J K L M
(A) 0.58
(A) 1 3 4 2
(B) 0.50
(B) 1 3 2 4
(C) 0.75 (C) 3 1 4 2
(D) 0.65 (D) 3 1 2 4
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Source: Madhya Pradesh Public Service Commission. Question paper published by Madhya Pradesh Public Service Commission.