1. In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is
A. more
B. less
C. same
D. may have any value
2. Cavitation occurs in centrifugal pumps when the suction pressure is
A. equal to the vapour pressure of the liquid at the temperature
B. less than the vopour pressure of the liquid at the temperature
C. more than the vapour pressure of the liquid at the temperature
D. none of the above
3. For application involving high discharge and low pressure
A. a centrifugal pump with blades of forward curvature
B. a centrifugal pump with blades of backward curvature
C. an axial flow pump
D. a reciprocating pump
4. The horse power transmitted by a belt is dependent upon
A. tension on tight and slack side of the belt [latex]({T}_{1}, {T}_{2})[/latex]
B. radius of the pulley (R)
C. speed of the pulley (N)
D. all of these
5. Which of the following has no unit
A. kinematic viscosity
B. surface tension
C. bulk modulus
D. strain
6. MIS stands for
A. military inspection scheme
B. management information system
C. management intelligence system
D. management information system
7. Two springs having spring constant k and arrangement as shown in figure. Equivalent spring constant keq is
A. [latex] \frac{k}{2}[/latex]
B. k
C. 2k
D. 4k
8. ABC analysis deals with
A. analysis of process chart
B. flow of material
C. schedule of job
D. controlling inventory costs money
9. The relation between modules of Elasticity (E), modulus of rigidity (G) and Bulk modulus (K) is given by
A. E = [latex] \frac{6kG}{G + 9K}[/latex]
B. E = [latex] \frac{9kG}{G + 3K}[/latex]
C. E = [latex] \frac{G + 9K}{3GK}[/latex]
D. E = [latex] \frac{G + 3K}{9GK}[/latex]
10. The ratio of elongation in a prismatic bar due to its own weight (W) as compared to another similar bar carrying an additional weight (W) will be
A. 1 : 2
B. 1 : 3
C. 1 : 4
D. 1 : 2.5
11. Production schedule does not provide information about
A. production schedule
B. material handling
C. both (a) and (b)
D. none of these
12. The buckling load for a given material depends on
A. slenderness ratio and area of cross-section
B. Poisson's ratio and modulus of elasticity
C. slenderness ratio and modulus of elasticity
D. slenderness ratio, area of cross-section and modulus of elasticity
13. Which type of thread can transmit power in either direction
A. acme
B. square
C. buttress
D. BSW
14. Stress relaxation is the phenomenon
A. stress reduces on increasing load
B. in which parts are not loaded
C. in which stress remains constant on increasing load
D. in which deformation tends to loosen the joint and produces a stress reduction
15. The Coriolis component of acceleration exists only whenever a point
A. moves in a straight line
B. moves along a straight line which has rotational motion
C. moves along a circular path
D. none of these
16. Total energy line is _____ the hydraulic gradient line
A. above
B. below
C. same
D. none of the above
17. If a shaft subjected to both tension T and bending moment M, then maximum shear stress is
A. [latex]\frac{16}{\pi {d}^{3}} \sqrt{{M}^{2} - {T}^{2}}[/latex]
B. [latex]\frac{16}{\pi {d}^{3}} \sqrt{{M}^{2} + {T}^{2}}[/latex]
C. [latex]\frac{32}{\pi {d}^{3}} \sqrt{{M}^{2} + {T}^{2}}[/latex]
D. [latex]\frac{32}{\pi {d}^{3}} \sqrt{{M}^{2} - {T}^{2}}[/latex]
18. The point of contraflexure does not occurs in
A. a fixed beam carrying a uniformly distributed load
B. a simply supported beam carrying a uniformly distributed load
C. a fixed beam carrying a uniformly varying load
D. none of these
19. A standard ice point temperature corresponds to the temperature of
A. water at 0°C
B. ice at – 4°C
C. solid and dry ice
D. mixture of ice and water under equilibrium conditions
20. Reheat factor is always
A. greater than 1
B. less than 1
C. equal to 1
D. none of these
21. The crippling load according to Euler's theory of long column, when both ends of the column are hinged is equal to
A. [latex]\frac{EI {\pi}^{2}}{4 {l}^{2}}[/latex]
B. [latex]\frac{4EI {\pi}^{2}}{{l}^{2}}[/latex]
C. [latex]\frac{EI {\pi}^{2}}{{l}^{2}}[/latex]
D. [latex]\frac{2 EI {\pi}^{2}}{{l}^{2}}[/latex]
22. Curtis Turbine is a
A. pressure compounded impulse turbine
B. velocity compounded turbine
C. pressure-velocity compounded turbine
D. velocity compounded impulse turbine
23. The Grubler's criterion for determining the degree of freedom (n) of a mechanism having
plane motion is
A. n = (l – 1) – j
B. n = 2(l – 1) – 2j
C. n = 3(l – 1) – 2j
D. n = 4(l – 1) – 2j
24. Vapour compression refrigeration is some what like
A. Carnot cycle
B. Rankine cycle
C. reversed Carnot cycle
D. none of the above
25. For multiple clutch, the no of discs on the driving shaft is [latex]{n}_{1}[/latex] and no. of discs on the driven shaft is [latex]{n}_{2}[/latex] then no. of pairs of contact surfaces (n) is
A. [latex]n = {n}_{1} + {n}_{2}[/latex]
B. [latex]n = {n}_{1} - {n}_{2}[/latex]
C. [latex]n = {n}_{1} + {n}_{2} -1[/latex]
D. [latex]n = {n}_{1} + {n}_{2} + 1[/latex]
26. Strain is defined as the ratio of
A. change in volume to original volume
B. change in length to original length
C. change in cross-sectional area to original cross sectional area
D. any one of the above
27. In regenerative air preheat-er, the heat is transferred
A. from a metal wall through one medium to another
B. from heating on intermediate material and then heating the air from this material
C. by direct mixing
D. heat is transferred by bleeding some gas from furnace
28. Thermal radiation extends over the range of
A. 0.01 to 0.1 [latex]\mu[/latex]
B. 100 to 250 [latex]\mu[/latex]
C. 0.1 to 100 [latex]\mu[/latex]
D. 250 to 1000 [latex]\mu[/latex]
29. Deflection on a simply supported beam having point load at the centre is
A. [latex]\frac{W {I}^{3}}{8EI}[/latex]
B. [latex]\frac{W {I}^{3}}{48EI}[/latex]
C. [latex]\frac{W {I}^{3}}{3EI}[/latex]
D. [latex]\frac{5W {I}^{3}}{384}[/latex]
30. Hooke’s law holds good upto
A. yield point
B. limit of proportionality
C. breaking point
D. elastic limit
31. For low clearance volume in steam engine, the process most suitable is
A. [latex]p{V}^{1.2}[/latex] = constant
B. pV = constant
C. [latex]p{V}^{r}[/latex] = constant
D. [latex]p{V}^{1.5}[/latex] = constant
32. For a refrigeration system if [latex]{T}_{1}[/latex] and [latex]{T}_{2}[/latex] are the limiting temperature ([latex]{T}_{1} > {T}_{2}[/latex]) and W is the work done on the system, then heat input to the system is
A. [latex]\frac{{T}_{1}W}{{T}_{1} - {T}_{2}}[/latex]
B. [latex]W \frac{{T}_{1} - {T}_{2}}{{T}_{1}}[/latex]
C. [latex]W \frac{{T}_{1} - {T}_{2}}{{T}_{2}}[/latex]
D. [latex]\frac{{T}_{2}W}{{T}_{1} - {T}_{2}}[/latex]
33. Uniform flow is given by the relation
A. [latex]\frac{\partial v}{\partial t} = 0[/latex]
B. [latex]\frac{\partial v}{\partial s} = 0[/latex]
C. [latex]\frac{\partial v}{\partial s} = constant[/latex]
D. [latex]\frac{\partial v}{\partial t} = constant[/latex]
34. In Taylor's Relation for tool life is given by V[latex]{T}_{n}[/latex] = C, where n has the highest value for
A. high speed steel tools
B. carbide tools
C. ceramic tools
D. none of these
35. Uniform sand hardness is obtained throughout the mold by following molding process
A. jolt
B. sand slinger
C. diaphragm molding
D. squeezing
36. The vapour compression refrigerator employs the following cycle
A. Rankine
B. Carnot
C. reversed Rankine
D. reversed Carnot
37. In Mohr's circle, point on the circle gives
A. hydro static compression
B. hydro static tension
C. shear stress
D. all of these
38. Minimum number of teeth to avoid interference is _____ for a pressure angle of 20
39. Maximum fluctuation of speed is given by
A. ratio of maximum and minimum speed
B. difference between the maximum and minimum speed
C. ratio of maximum fluctuation of speed to the mean speed
D. difference between the maximum and minimum energy
40. The condensing pressure due to the presence of non condemn-able gases, as compared to that
actually required for condensing temperatures without non condemn-able gases.
A. will be higher
B. will be lower
C. will remain unaffected
D. unpredictable
41. The lowest speed is used in
A. knurling
B. taper turning
C. boring
D. threading
42. In wire drawing the press used is
A. knukle press
B. toggle press
C. double action press
D. none of these
43. When the venturimeter is inclined then what happens to the reading
A. increases
B. decreases
C. remains the same
D. it is not applicable to venturimeter
44. Draft tube is used
A. to transport water downstream without eddies
B. to convert the kinetic energy to flow energy by a gradual expansion of the flow cross
section
C. for safety of the turbine
D. to increase flow rate
45. Ammonia-absorption refrigeration cycle requires
A. very little work input
B. maximum work input
C. zero work input
D. none of the above
46. A thermal power plant designed to operate in cold climate is operated is hot climate it will develop
A. less power
B. more power
C. same power
D. more or less depending on the size
47. A relation between thermodynamic boundary layer and hydrodynamic boundary layer exists in
A. Reynold's number
B. Prandte’s number
C. Nusselt’s number
D. Euler’s number
48. The relative coefficient of performance is
A. actual COP/theoretical COP
B. theoretical COP/actual COP
C. actual COP x theoretical COP
D. 1-actual COP x theoretical COP
49. Method of governing used in diesel engine is
A. quantity governing
B. quality governing
C. combined governing
D. hit and miss governing
50. In S.J. unit, one ton of refrigeration is equal to
A. 210 kJ/min
B. 21 kJ/min
C. 420 kJ/min
D. 840 kJ/min
51. A steam pipe is to be insulated by two materials having thermal conductivities [latex]{K}_{1}[/latex] and [latex]{K}_{2}[/latex] such that [latex]({K}_{1} < {K}_{2}) [/latex] so, for better insulation
A. [latex]{K}_{1}[/latex] should be put over pipe and [latex]{K}_{2}[/latex] over it
B. [latex]{K}_{2}[/latex] should be put over pipe and [latex]{K}_{1}[/latex] over it
C. [latex]{K}_{1}[/latex] and [latex]{K}_{2}[/latex] may be put in any order
D. none of these
52. Viscous force is proportional to
A. shear stress due to viscosity
B. coefficient of viscosity
C. area of the pipe
D. none of these
53. A refrigerator cycle operates between condenser temperature of + 27ºC and evaporator temperature of – 23ºC. The C.O.P. of the cycle is
54. In cetane number the new reference taken is
A. heptamethylnonane
B. [latex]\alpha[/latex]-methyl napthalene
C. n - heptane
D. iso-octane
55. Domestic refrigerator working on vapour compression cycle uses the following type of
expansion device
A. electrically operated throttling valve
B. manually operated valve
C. thermostatic valve
D. capillary tube
56. Fins are used to
A. increase the area
B. heat accumulation
C. to increase the surface area of heat transfer
D. none of these
57. Tds = dH - Vdp is application to
A. closed system
B. open system
C. reversible and irreversible systems
D. all of these
58. Bernoulli's equation is applicable for
A. the flow is uniform, steady and in compressible
B. the flow is non-viscous, uniform and steady
C. the flow is steady, non-viscous, in compressible and irrotational
D. none of these
59. Lift in a body in fluid medium is proportional to
A. pressure force
B. resistance force
C. pressure force – resistance force
D. pressure force + resistance force
60. In Newton's law of viscosity, shear stress is proportional to
A. velocity
B. velocity gradient
C. shear strain
D. viscosity
61. For a liquid if the velocity is increased twice and diameter of the pipe is decreased one fourth then ratio of Reynold's number will be
A. 2
B. 1
C. [latex]\frac {1}{2}[/latex]
D. [latex]\frac {1}{4}[/latex]
62. Which statement is wrong related to core
A. core is drawn after pouring metal
B. core is drawn before pouring metal
C. core has no relation with solidification
D. both (a) and (c)
63. In a centrifugal pump discharge Q is proportional to
A. [latex]{N}^{2}[/latex]
B. N
C. [latex]{N}^{3}[/latex]
D. [latex]{N}^{\frac {1}{2}}[/latex]
64. Tooth paste tube is made by following process
A. forging
B. piercing
C. impact extrusion
D. drawomg
65. Pick up the correct statement about giving up of heat from one medium to other in ammonia
absorption system
A. strong solution to weak solution
B. weak solution to strong solution
C. strong solution to ammonia vapour
D. ammonia vapour to weak solution
66. Freon group of refrigerants are
A. inflammable
B. toxic
C. non-inflammable and toxic
D. non-toxic and non-inflammable
67. In grey cast iron, carbon is present in the form of
A. cementite
B. free carbon
C. spheroids
D. flakes
68. In thermit welding, iron oxide and aluminium are mixed in following proportions
A. 1 : 1
B. 3 : 1
C. 1 : 3
D. 1 : 2
69. In vapour compression refrigeration system, refrigerant occurs as liquid between
A. condenser and expansion valve
B. compressor and evaporator
C. expansion valve and evaporator
D. compressor and condenser
70. Which of the following organisation is best suited for military
A. functional organisation
B. line organisation
C. staff organisation
D. line and staff organisation
71. The term ‘value’ in value engineering refers to
A. total cost of the product
B. utility of the product
C. selling price of the product
D. manufactured cost of the product
72. Micro motion study is
A. subdivision of an operation into therbligs and their analysis
B. enlarged view of motion study
C. analysis of one stage of motion study
D. minute and detailed motion study
73. CPM and PERT technique is used for
A. short term
B. long term
C. moderate term
D. none of these
74. A body having velocity of 199 m/s. Find its Mach number
A. 1.2
B. 0.8
C. 0.6
D. 1.4
75. Tools fails suddenly due to
A. flank wear
B. crater wear
C. both (a) and (b)
D. either (a) or (b)
76. Operation research is used in
A. linear programming
B. queuing theory
C. transportation problems
D. all of these
77. Laser application has made application in
A. electronic industry
B. casting
C. machining
D. none of these
78. The advantage of dry compression is that
A. it permits higher speeds to be used
B. it permits complete evaporation in the evaporator
C. it results in high volumetric and mechanical efficiency
D. All of the above
79. Slenderness Ratio of a column is the ratio of
A. its length to least radius of gyration
B. its length to least lateral direction
C. its lateral dimension to radius of gyration
D. none of the above
80. 3 - 2 - 1 pin method checks ____ degrees of freedom
81. When cooling of Austenite takes place in temperature range of 205º C – 315º C then formation of
A. spherodite
B. trossite
C. martensite
D. sorbite
82. The critical path of a network represents
A. the minimum time required for completion of project
B. the maximum time required for completion of project
C. maximum cost required for completion of project
D. minimum cost required for completion of project
83. The evolution of heat of solution takes place in ammonia absorption plant when
A. ammonia vapour goes into solution
B. ammonia vapour is driven out of solution
C. lithium bromide mixes with ammonia
D. weak solution mixes with strong solution
84. The temperature and carbon content at which eutectoid reaction occur in Fe - C equation
diagram are
A. 723º C and 0.02% C
B. 723º C and 0.80% C
C. 710º C and 0.69% C
D. 710º C and 0.69% C
85. Which gas is not harmful used in refrigeration
A. [latex]{CO}_{2}[/latex]
B. [latex]{NH}_{3}[/latex]
C. Freon
D. none of these
86. The COP of a vapour compression plant in comparison to vapour absorption plant is
A. more
B. less
C. same
D. unpredictable
87. C language is a
A. high level
B. low level
C. middle level
D. none of these
88. Atomic packing factor for body centered cubic is
A. 0.69
B. 0.63
C. 0.58
D. 0.71
89. Hardness of water is due to
A. impurities
B. Ca and Mg
C. Ca and Na
D. none of these
90. Semless pipes are made by
A. extrusion
B. drawing
C. piercing
D. forging
91. Power generated by which source is now most effective
A. wind
B. tidal wave
C. solar
D. none of these
92. Convert 1026 decimal to octal
A. 536
B. 534
C. 524
D. 520
93. Guided Rocket missile is a
A. mass variant
B. time variant
C. mass and time variant
D. none of these
94. For a shaft having normal stress and bending stress [latex]\sigma[/latex] then equivalent shear stress [latex]\Gamma[/latex] is
A. [latex]\frac{1}{2} \sqrt{{\sigma}^{2} + {\Gamma}^{2}}[/latex]
B. [latex]\frac{1}{2} \sqrt{{\sigma}^{2} + {4 \Gamma}^{2}}[/latex]
C. [latex]\frac{1}{2} \sqrt{{\sigma}^{2} - {4 \Gamma}^{2}}[/latex]
D. [latex]\frac{1}{2} \sqrt{{\sigma}^{2} + {\Gamma}^{2}}[/latex]
95. Octane number of petrol found is Indian refineries is
A. 40 - 45
B. 50 - 55
C. 80 - 85
D. 20 - 30
96. In a reversible heat engine the temperature limits are 100 k and 400 K. If heat output is 200 kJ and heat input is
A. 400 kJ
B. 200 kJ
C. 100 kJ
D. 800 kJ
97. Velocity potential function is applicable for
A. rotational flow
B. irrotational flow
C. both (a) and (b)
D. none of these
98. Two plates are joined by rivets. The pull required to tear off the plate across a row of rivets per pitch length is equal to
A. ( p – d)t × [latex]{f}_{t}[/latex]
B. p × t × [latex]{f}_{t}[/latex]
C. d × t × [latex]{f}_{t}[/latex]
D. ( p + d) × t × [latex]{f}_{t}[/latex]
where d = diameter of rivet
p = pitch of rivet
t = thickness of rivet
[latex]{f}_{t}[/latex] = permissible tensile stress
99. For minimum axial thrust, the type of gear used should be
A. worm hear
B. helical gear
C. herringbone hear
D. hybrid gear
100. Short horizontal lines on pressure-enthalpy chart show
A. constant pressure lines
B. constant temperature lines
C. constant total heat lines
D. constant entropy lines
Answers and Explanations
1. Answer - Option B
2. Answer - Option B
3. Answer - Option C
4. Answer - Option D
5. Answer - Option D
6. Answer - Option B
7. Answer - Option C
8. Answer - Option D
9. Answer - Option B
10. Answer - Option B
11. Answer - Option B
12. Answer - Option D
13. Answer - Option B
14. Answer - Option D
15. Answer - Option B
16. Answer - Option A
17. Answer - Option B
18. Answer - Option B
19. Answer - Option D
20. Answer - Option A
21. Answer - Option C
22. Answer - Option D
23. Answer - Option C
24. Answer - Option D
25. Answer - Option C
26. Answer - Option D
27. Answer - Option B
28. Answer - Option C
29. Answer - Option B
30. Answer - Option B
31. Answer - Option B
32. Answer - Option D
33. Answer - Option B
34. Answer - Option B
35. Answer - Option C
36. Answer - Option D
37. Answer - Option D
38. Answer - Option C
39. Answer - Option B
40. Answer - Option A
41. Answer - Option A
42. Answer - Option B
43. Answer - Option C
44. Answer - Option B
45. Answer - Option A
46. Answer - Option A
47. Answer - Option B
48. Answer - Option A
49. Answer - Option B
50. Answer - Option A
51. Answer - Option A
52. Answer - Option A
53. Answer - Option C
54. Answer - Option A
55. Answer - Option D
56. Answer - Option C
57. Answer - Option D
58. Answer - Option C
59. Answer - Option D
60. Answer - Option B
61. Answer - Option A
62. Answer - Option A
63. Answer - Option B
64. Answer - Option C
65. Answer - Option B
66. Answer - Option D
67. Answer - Option D
68. Answer - Option B
69. Answer - Option C
70. Answer - Option B
71. Answer - Option B
72. Answer - Option A
73. Answer - Option A
74. Answer - Option C
75. Answer - Option B
76. Answer - Option D
77. Answer - Option A
78. Answer - Option D
79. Answer - Option A
80. Answer - Option A
81. Answer - Option C
82. Answer - Option B
83. Answer - Option A
84. Answer - Option B
85. Answer - Option A
86. Answer - Option A
87. Answer - Option C
88. Answer - Option C
89. Answer - Option D
90. Answer - Option C
91. Answer - Option B
92. Answer - Option B
93. Answer - Option D
94. Answer - Option D
95. Answer - Option C
96. Answer - Option D
97. Answer - Option B
98. Answer - Option A
99. Answer - Option C
100. Answer - Option A