APSC Motor Vehicle Inspector (MVI) Mechanical Engineer (2024) Question Paper With Answers

DO NOT OPEN THIS TEST BOOKLET UNTIL YOU ARE ASKED TO DO SO

TEST BOOKLET

Paper-II

(MECHANICAL ENGINEERING)

Time Allowed: 2 Hours Full Marks: 100

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Read the following instructions carefully before you begin to answer the questions:

1. The name of the Subject, Roll Number as mentioned in the Admission Certificate, Test Booklet No. and Series are to be written legibly and correctly in the space provided on the Answer-Sheet with Black/Blue ballpoint pen.
2. Answer-Sheet without marking Series as mentioned above in the space provided for in the Answer-Sheet shall not be evaluated.
3. All questions carry equal marks.

The Answer-Sheet should be submitted to the Invigilator.

Directions for giving the answers: Directions for answering questions have already been issued to the respective candidates in the Instructions for marking in the OMR Answer-Sheet’ along with the Admit Card and Specimen Copy of the OMR Answer-Sheet.
Example:

Suppose the following question is asked:

The capital of Bangladesh is
(A) Chennai
(B) London
(C) Dhaka
(D) Dhubri

You will have four alternatives in the Answer-Sheet for your response corresponding to each question of the Test Booklet as below:

In the above illustration, if your chosen response is alternative (C), ie., Dhaka, then the same should be marked on the Answer-Sheet by blackening the relevant circle with a Black/Blue ballpoint pen only as below: AB D

The example shown above is the only correct method of answering.

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11. This Test Booklet can be carried with you after answering the questions in the prescribed Answer-Sheet.
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N.B.: There will be negative marking @ 0-25 per 1 (one) mark against each wrong answer.

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1. Which of the following allows simultaneous write and read operation in a computer?

(A) ROM
(B) EROM
(C) RAM
(D) EEPROM

2. What is the term for the data communication system within a building or campus?

(A) MAN
(B) WAN
(C) PAN
(D) LAN

3. MS-Word is an example of

(A) an operating system
(B) a processing device
(C) an application software
(D) an output device

4. A/An is a central server on a computer network that enables. connected clients to access the server’s storage capacities.

(A) web server
(B) application server
(C) print server
(D) file server

5. In hexadecimal system, 10 is represented by

(A) E
(B) F
(C) G
(D) None of the above

6. Demand for commodity is more due to price fall is a situation of

(A) increase in demand
(B) contraction of demand
(C) decrease in demand
(D) extension of demand

7. Which one of the following is not a factor of production?

(A) Land
(B) Labour
(C) Motivation
(D) Capital

8. Out of the following, which is not a measure of sustainable water management?

(A) Preventing leakage from dam and canals
(B) Reducing the rate of surface runoff water
(C) Preventing loss in the municipal waste
(D) Building several small reservoirs instead of few mega projects

9. Which element is building block of both animal and plant tissues?

(A) Sulphur
(B) Carbon
(C) Nitrogen
(D) None of the above

10. The study of interaction between living and non-living organisms and environment is

(A) ecology
(B) ecosystem
(C) phytosociology
(D) phytogeography

11. The ultraviolet radiation in the stratosphere is absorbed by

(A) carbon dioxide
(B) sulphur dioxide
(C) oxygen
(D) ozone

12. Noise pollution causes

(A) paralysis
(B) blurred vision
(C) anxiety and hypertension
(D) failure of breathing

13. The primary greenhouse gas is

(A) water vapour
(B) N₂O
(C) CH4
(D) CO2

14. Which of the following is a semi- conductor material?

(A) Gold
(B) Iron
(C) Copper
(D) Silicon

15. The principle of operation of a transformer is based on

(A) Ampere’s law
(B) Faraday’s law of electro- magnetic induction
(C) conservation of momentum
(D) Coulomb’s law

16. The metacentric height is the distance between the

(A) centre of gravity of the floating body and centre of buoyancy
(B) centre of gravity of the floating body and the metacentre
(C) metacentre and centre buoyancy of
(D) centre of gravity of the floating body and the centre of pressure

17. An ideal flow of any fluid must fulfill which of the following?

(A) Pascal’s law
(B) Newton’s law of viscosity
(C) Bernoulli’s theorem
(D) Continuity equation.

18. Hydraulic ram is a device used

(A) to accelerate the water flow
(B) to lift water without electric motor
(C) for lifting heavy load
(D) to beat water and lift it

19. 1 bar is equal to

(A) 105 N/m²
(B) 0-1 MN/m²
(C) 100 kN/m²
(D) All of the above

20. Power required to drive centrifugal pump is proportional to its impeller. the directly of its

(A) diameter
(B) square of diameter
(C) cube of diameter
(D) fourth power of diameter

21. A channel is said to be most economical cross-section if

(A) it gives maximum discharge for a given cross-sectional area and bed slope
(B) it has maximum wetted perimeter
(C) it involves lesser excavation for the designed channel
(D) All of the above

22. In machining, the zone where maximum heat is generated due to plastic deformation is called

(A) shear zone
(B) friction zone
(C) work-tool contact zone
(D) None of the above

23. In Taylor’s tool life equation VTC, V and T respectively represents

(A) cutting speed and temperature
(B) cutting speed and tool life
(C) volume and temperature
(D) volume and tool life

24. Which of the following tools is manufactured by powder metallurgy?

(A) Low carbon steel
(B) High carbon steel
(C) High speed steel
(D) Carbide tools

25. How many atoms are there in unit cell of a b.c.c. space lattice?

(A) 6
(B) 9
(C) 14
(D) 17

26. The steel used for motor car crank- shafts is

(A) nickel steel
(B) chrome steel
(C) nickel-chrome steel
(D) silicon steel

27. The trade name of non-ferrous cast alloy composed of cobalt, chromium and tungsten is called

(A) ceramic
(B) stellite
(C) diamond
(D) cemented carbide

28. The first law of thermodynamics furnishes the relationship between

(A) various thermodynamic processes
(B) various properties of steam
(C) heat, work and the properties of steam
(D) heat and work

29. Enthalpy is calculated as the

(A) sum of internal energy and product of pressure and volume of the system
(B) sum of internal energy and product of pressure and density of the system
(C) difference between internal energy and product of pressure and density
(D) difference between internal energy and product of pressure and volume of the system

30. The relation between C_{P} and c_{v} (with usual notation) is

(A) C_{P} – C_{V} = R
(B) C_{P}/C_{V} = gamma
(C) C_{P} – C_{V} = R/J
(D) All of the above

31. The isothermal process of a system follows which law?

(A) Charle’s law
(B) Boyle’s law
(C) Gay-Lussac law
(D) All of the above

32. If heat Q flows reversibly from the system to the surroundings at T_{0}’ what will be the effect on entropy

(A) Entropy of the system is reduced by Q/T_{0}
(B) System has lost entropy to the surroundings.
(C) Entropy increases to the surroundings is Q/T_{0}
(D) All of the above

33. A self-locking simple machine has

(A) efficiency 100%
(B) efficiency 50%
(C) efficiency > 50%
(D) efficiency 50%

34. When a body of mass m attains a velocity v from rest in time t, then the kinetic energy of translation is

(A) m * v ^ 2
(B) 0 * 5m * v ^ 2
(C) 0 * 67m * v ^ 2
(D) All of the above

35. If three coplanar like parallel forces acting on a beam having the magnitude 2 N, 1 kgf, 4 N, the resultant of these forces shall be (g = 10m / (s ^ 2))

(A) 7 N
(B) 6 N
(C) 16 N
(D) All of the above.

36. The angle of banking on a circular path of a road is provided so that the resultant of the centrifugal force and weight of car fall

(A) at an angle more than 90″
(B) at an angle less than 90°
(C) at an angle 90°
(D). None of the above

37. In a gas turbine cycle with regeneration.

(A) pressure ratio increases
(B) work output decreases
(C) thermal efficiency increases
(D) heat input increases

38. In a diesel engine, heat addition takes place

(A) at constant pressure
(B) at constant volume
(C) isothermally
(D) adiabatically

39. Which of the following events would reduce the volumetric efficiency of a vertical compression (Cl) engine?

(A) Exhaust valve closing after TDC
(B) Inlet valve closing after BDC
(C) Inlet valve closing before BDC
(D) Inlet valve opening before TDC

40. In a two-stroke petrol engine suction stroke volume found to be 20 m³ and clearance volume is 4 m³. The compression ratio will be

(A) 5
(B) 6
(C) 1-2
(D) None of the above

41. The COP of a domestic refrigerator

(A) is less than 1
(B) is equal to 1
(C) is more than 1
(D) depends upon the weather condition

42. The vapour compression refrigerator employs which of the following cycles?

(A) Reversed Rankine
(B) Carnot
(C) Reversed Carnot
(D) Rankine

43. The process of augmenting the engine power by raising the pressure of charge fed into the engine cylinder is called

(A) scavenging
(B) supercharging
(C) pumping
(D) doping

44. In ammonia water vapour absorption refrigeration system

(A) ammonia is absorbent and water is refrigerant
(B) ammonia is refrigerant and water is absorbent
(C) both ammonia and water are refrigerant
(D) both ammonia and water are absorbent

45. Heat treatment operation involving heating of steel above upper critical temperature and cooling it in air is known as

(A) normalising
(B) tempering
(C) annealing
(D) stress relieving

46. Mild steel belongs to which of the following categories?

(A) High carbon steel
(B) Medium carbon steel
(C) Low carbon steel
(D) Alloy steel

47. Solder is an alloy consisting of

(A) lead and tin
(B) tin and copper
(C) lead and copper
(D) lead and zinc

48. Steel is primarily designated according to

(A) alloying elements
(B) carbon content
(C) iron content
(D) tensile strength

49. The cutting tool on a milling machine is mounted on

(A) arbor
(B) spindle
(C) column
(D) knee

50. Which of the following screw threads is adopted for power transmission in either direction?

(A) ACME thread
(B) Square thread
(C) Buttress thread
(D) Multiple thread

51. An Allen bolt

(A) is self-locking bolt
(B) is provided with countersunk head
(C) has a hexagonal depression in its head
(D) has both ends threaded

52. Which key is provided in pairs at right angles and each key with- stands torsion in one-direction only?

(A) Sunk key
(B) Flat saddle key
(C) Tangent key
(D) Hollow saddle key

53. Identify the bearing in which one end of the shaft rests within the bearing.

(A) Footstep or pivot bearing
(B) Collar bearing
(C) Bush bearing
(D) Journal bearing

54. In third angle orthographic projection, the front view lies

(A) below reference axis
(B) above ground level
(C) between reference axis and ground level
(D) All of the above

55. In a shaper

(A) tool is stationary and work reciprocates
(B) tool moves over the stationary work
(C) tool moves over the reciprocating work
(D) work is stationary and tool reciprocates

56. In planer machine, the work that is supported on the table ___against the stationary cutting tool.

(A) oscillates
(B) vibrates
(C) reciprocates
(D) Both (A) and (C)

57. Which of the following methods is usually used to weld gray cast iron?

(A) TIG welding
(B) MIG welding
(C) Gas welding
(D) Arc welding

58. Flank wear occurs mainly on

(A) cutting edge
(B) nose part and top face
(C) face of the cutting tool at a short distance from the cutting edge
(D) nose part, front relief face and side relief face of the cutting tool

59. Which of the following aspects pertains to climb milling during machining operation?

(A) Gradual increase in chip thickness
(B) Enable the cutter to dig in and start the cut
(C) Reduce consumption specific power
(D) Better surface finish

60. Removal of metal in a drilling operation is by

(A) shearing
(B) compression
(C) extrusion
(D) shearing and extrusion

61. Poisson’s ratio is defined as the ratio of

(A) lateral stress and longitudinal stress
(B) longitudinal stress and longitudinal strain
(C) longitudinal stress and lateral stress
(D) lateral stress and lateral strain.

62. In the Euler’s formula for buckling ΕΙ load Pgn, the value of n is 2 least in case of column with condition

(A) both ends are fixed
(B) one end is fixed and other end is free
(C) one end is fixed and other end is hinged
(D) both ends are hinged

63. A column whose slenderness ratio is less than 80 is

(A) long column
(B) medium column
(C) short column
(D) weak column

64. The maximum strain energy that can be stored in a body is known as

(A) impact energy
(B) resilience
(C) proof resilience
(D) modulus of resilience

65. The property of a fluid which enables it to resist tensile stress is known as

(A) compressibility
(B) surface tension
(C) cohesion
(D) adhesion

66. The function of a Governor is to

(A) store energy and give up whenever required
(B) adjust variation of speed by varying the input to the engine
(C) decrease variation of speed
(D) increase variation of speed

67. Coriolis component of acceleration exists whenever a point moves along a path that has

(A) linear motion
(B) tangential acceleration
(C) rotational motion
(D) centripetal acceleration

68. Inversion of a kinematic chain

(A) modifies relative motion of one link relative to another
(B) completely changes the motion of links relative to each other
(C) keeps relative motion of the link unchanged with respect to one another
(D) has no effect on absolute motion of links

69. The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as

(A) turning pair
(B) rolling pair
(C) sliding pair
(D) spherical pair

70. In the impulse turbine, the steam expands

(A) in the nozzle
(B) in the blades
(C) partly in nozzle and partly in blades
(D) neither in nozzle nor in blades

71. Heat is transferred by all three modes viz., conduction, convection and radiation in

(A) electric heater
(B) boiler
(C) steam condenser
(D) melting of ice

72. The economizer is used in boilers to

(A) use more fuel
(B) increase flue gas temperature
(C) heat feed water by bleeding steam
(D) increase thermal efficiency of boiler

73. Which is the basic raw material of the nuclear plant?

(A) Uranium
(B) Thorium
(C) Radium
(D) Plutonium

74. Honing operation is used to

(A) harden a surface
(B) finish holes
(C) provide a very close fit between two contact surfaces
(D) remove the grinding and tools makes left by previous operation

75. Which of the following wage incentive plans guarantees minimum wage to a worker and bonus paid for the fixed percentage of time saved?

(A) Halsey plan
(B) Gantt plan
(C) Rowan plan
(D) Emerson’s efficiency plan

76. Which of the following charts gives simultaneous information about progress of work and machine?

(A) Process chart
(B) Machine load chart
(C) Man-machine chart
(D) Gantt chart

77. PERT requires

(A) single time estimate
(B) double time estimate
(C) triple time estimate
(D) None of the above

78. In manufacturing management, the term ‘despatching’ is used to describe

(A) dispatch of sales order
(B) dispatch of factory mail
(C) dispatch of finished product of the user
(D) dispatch of work orders through shop floor

79. Work study is concerned with

(A) improving present method and finding standard time
(B) motivation of workers
(C) improving production capability
(D) improving production, planning and control

80. The Rateau turbine belongs to the category of

(A) pressure compounded turbine
(B) reaction turbine
(C) velocity compounded turbine
(D) radial flow turbine

81. Blades of gas turbine are generally made of

(A) aluminium
(B) cast iron
(C) cast steel
(D) nickel-cobalt alloy

82. The process of producing energy by utilizing heat trapped inside earth surface is called

(A) hydrothermal energy
(B) geothermal energy
(C) solar energy
(D) wave energy

83. When solar radiation falls on the earth’s surface, the temperature of

(A) land mass rises faster than water mass
(B) land mass rises slower than water mass
(C) land mass and water mass rise uniformly
(D) only land mass increases and water mass remains at fixed temperature

84. Bio-diesel is

(A) obtained from fermentation of sugar
(B) obtained from pyrolysis process
(C) exudates of plants
(D) an upgraded vegetable oil

85. The function of differential gear in an automobile is to

(A) facilitate reverse operation of the vehicle
(B) reduce tyre wear at high speed
(C) distribute equal torque between wheels
(D) take care of difference of speed of real wheels

86. The object of suspension system is to

(A) prevent the road shock from being transmitted to the vehicle components
(B) safeguard the occupants from the road shocks
(C) preserve the stability of the vehicle in pitching or rolling while in motion
(D) All of the above

87. In IC engine, the power developed inside the cylinder is known as

(A) brake horsepower
(B) frictional horsepower
(C) indicated horsepower
(D) pumping power

88. Human Resource Management (HRM) aims to maximise employees’ as well as organization’s

(A) performativity
(B) economy
(C) efficiency
(D) effectiveness

89. Gas turbine uses which of the following types of air compressor?

(A) Centrifügal type
(B) Axial flow type
(C) Reciprocating type
(D) Rotary type

90. What is the least micrometer? count of

(A) 0-1 mm
(B) 0-02 mm
(C) 0-01 mm
(D) 0-2 mm

91. The degree of closeness of the measured value of certain quantity with its true value is known as

(A) accuracy
(B) precision
(C) standard
(D) sensitivity

92. In the annuity method of depreciation, interest is charged on

(A) depreciation annuity
(B) book value of the asset
(C) salvage value of the asset
(D) sum of depreciation annuity and book value of the asset

93. ‘Go’ and ‘No Go’ gauge are types of

(A) plug gauge
(B) step gauge
(C) ring gauge
(D) limit gauge

94. Expressing a dimension as 2520-05 mm is done in the case of

(A) unilateral dimension
(B) bilateral dimension
(C) limiting dimension
(D) All of the above

95. CAD/CAM is the relationship between

(A) design and manufacturing
(B) science and engineering
(C) manufacturing and marketing
(D) design and marketing

96. The common electrolyte in electrochemical machining process is

(A) water
(B) transformer oil
(C) kerosene
(D) brine solution

97. Which of the following methods uses the combination of electrical and chemical energy for machining?

(A) Ultrasonic machining
(B) Abrasive Jet machining
(C) Electro-chemical machining
(D) Electron beam machining

98. Which of the following processes can be used to produce very small diameter holes?

(A) Electric discharge machining
(B) Electro-chemical machining
(C) Water jet machining
(D) Electron beam machining

99. In a petrol engine, the tendency of detonation increases with

(A) supercharging
(B) retarded spark timing
(C) running the engine at high speed
(D) increasing the cooling rate

100. Aircraft body has

(A) precast structure
(B) welded structure
(C) riveted structure
(D) bolted structure

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APSC Motor Vehicle Inspector (MVI) Mechanical Engineer (2024) , APSC General Studies 2023 Questions, APSC Exam Solved Paper PDF, APSC Previous Year Question Paper, APSC Question Paper with Answers

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