RRB ALP CBT 2 Heat Engine Question Paper MCQ (Railway Assistant Loco Pilot)

RRB ALP CBT 2 Heat Engine Question Paper MCQ PDF Free Download. Railway Assistant Loco Pilot

2. RRB ALP CBT 2 Heat Engine Question Paper MCQ
Contents
RRB ALP CBT 2 Heat Engine Question Paper MCQ 23/01/2019 (Technical) ..................................................................... 2
RRB Heat Engine 8/2/2019 ............................................................................................................................................... 7
RRB ALP CBT 2 Heat Engine 23-01-2019 shift 2 .............................................................................................................. 16

RRB ALP CBT 2 Heat Engine Question Paper MCQ 23/01/2019 (Technical)
1. Velocity ratio of simple machine is the ratio of distance travelled by the _____ to the distance travelled
by the ____ in
a) effort; effort
b) effort; load
c) load; load
d) load; effort
Ans. b

2. If straight lines are drawn from various points on the contour of an object to meet a plane, the figure
obtained on the plane is called the _____ of the object.
a) animation
b) development
c) dimensioning
d) projection
Ans. d

3. Which of the following options does not have an SI base unit?
a) Electric current
b) Luminous intensity
c) Frequency
d) Amount of substance
Ans. c

4. In engineering drawing, the letters LH signifies ____.
a) Level Hide
b) Left Hand
c) Limit of Height
d) Low heat
Ans. b

3. 5. ________protection must be worn whenever noise levels exceed the nose exposure standard.
a) Eye
b) Foot
c) Hearing
d) Head
Ans. c

6. If a body has a specific gravity of less than 1, then it will float in/on _____.
a) Water
b) Liquids
c) Mercury
d) air
Ans. a

7. A body starts from rest. Its displacement is proportional to _____ when its acceleration is constant.
a) work
b) time squared
c) velocity
d) time
Ans. b

8. A wire of length 1 and radius r has a resistance R. The resistance of another ire made of the same
material but having half its length and half its radius will be ____
a) 2R
b) 4R
c) R/2
d) R
Ans. a

9. A source of voltage V maintains a current I in a circuit. The energy supplied to the circuit by the source in
time t is
a) Vi/t
b) V/it
c) 1/Vit
d) Vit
Ans. d

10. The effort in a class 1 lever is in _____ direction (s)
a) two
b) multiple
c) one
d) three
Ans. c

4. 11. The abbreviation AC in an engineering drawing stands for ____
a) Air conditioning
b) Aerial Cut
c) Across corners
d) Attached circle
Ans. c

12. If the width of a standard engineering drawing sheet is 841 mm, then its length would be _____ mm
a) 1000
b) 1216
c) 1189
d) 1250
Ans. c

13. Clearance between mating parts is measured by – Choose the correct option
a) Dial gauge
b) Caliper gauge
c) “Go” gauge
d) Feeler gauge
Ans. d

14. The diesel engine usually emits excessive smoke during – Choose the correct option
a) Accelerating
b) Starting
c) Decelerating
d) Idling
Ans. a

15. The purpose of thermostat is to keep the engine –
a) Cool
b) Hot
c) At desired temperature
d) Warm
Ans. c

16. Air fuel mixture in a petrol engine is burnt in
a) Piston b) Intake manifold
c) Cylinder d) Exhaust manifold
Ans. c

17. In a diesel engine feed pump is located on
a) Cylinder head b) Fuel tank
c) FIP d) Fuel filter
Ans. c

5. 18. The tool, which is used for laying out diameter is
a) Outside micrometer
b) Divider
c) Tri square
d) Scriber
Ans. b

19. The air filters used in high speed diesel engines are generally of the type –
a) Dry filters
b) Oil bath filters
c) Impingemetn filters
d) Heaters
Ans. b

20. The ignition condenser
a) Reduces arcing at contacts
b) Reduces secondary spark
c) Increases contact arcing
d) Protects plugs from load
Ans. a

21. A cutting tool used to finish and enlarge a hole is known as
a) Dill
b) Tap
c) Reamer
d) Die
Ans. c

22. Why is free play in clutch needed
a) to increase speed of engine rpm b) to improve efficiency of braking
c) to prevent the clutch from heating up d) to facilitate lubrication by oil
Ans. c

23. The stroke of an engine is
a) Inside diameter of the cylinder b) Volume of the cylinder
c) Distance between tdc and bdc d) Length of the connecting rod
Ans. c

24. Which of the following fuel injection systems was originally used in large stationary and marine engines
and is now seldom used?
a) Mechanical injection b) Air injection
c) Airless injection d) Solid injection
Ans. b

6. 25. A mechanism used to control the speed of an engine is called
a) Speedometer b) Regulator c) Odometer d) Governor
Ans. d

26. The principle of a radiator of an engine cooling system is to –
a) Increase the air speed as it flows over the hot surface
b) Spread out the hot water over a large area
c) Cause a heat flow by convection currents
d) Acts as a reservoir for the water
Ans. b

27. Much of the heat in the exhaust gases may be recovered by the use of –
a) Muffler b) Tail pipe c) Manifold d) Heat-exchanger
Ans. d

28. A noise produced in the cylinder of a diesel engine combustion, usually when the fuel oil as a low
ignition quality is called –
a) Fuel knock
b) Fuel explosion
c) Fuel burst
d) Fuel thrust
Ans. a

29. In starting of diesel engines by electric starting what is used to supply power to the starter motor?
a) Battery
b) Rectifier
c) Dynamo
d) Generator
Ans. a

30. In diesel engine the fuel is ignited by
a) An injector
b) A spark plug
c) Virtue of temperature of compressed air
d) A glow plug
Ans. c


31. A device, which is used to measure the brake power of an engine is called –
a) Energy meter
b) Torque wrench
c) Dynamo meter
d) Indicator
Ans. c

7. RRB Heat Engine 8/2/2019
1. In petrol engine
a) Only air is compressed inside the cylinder
b) Only fuel is compressed inside the cylinder
c) Air and fuel both are compressed inside the cylinder
d) Neither fuel nor air is compressed inside the cylinder
Ans. c

2. Petrol engine works on
a) Otto cycle
b) Diesel cycle
c) Rankine cycle
d) Cornot cycle
Ans. a

3. Compression ratio of petrol engine is
a) More than diesel engine
b) Equal to diesel engine
c) Equal to CNG engine
d) Less than diesel engine
Ans. d

4. In petrol engine fuel and air are ignited by
a) Spark plug
b) Carburetor
c) Gas lighter
d) Matchbox
Ans. a

5. In context of heat engine carburetor is a device which is used to
a) Clean fuel before it enters into ignition chamber
b) Mix air and fuel in correct ratio
c) Clean exhaust gas in engine
d) Cooling the engine
Ans. b

6. In context of heat engine strainer is used for
a) Clean the fuel before it enters into floating chamber
b) Spark the fuel
c) Mix air and fuel together
d) Heating the air
Ans. a

7. A mechanical device which engages and disengages two rotating shaft is known as
a) Curburetor b) Strainer
c) Brake d) Clutch
Ans. d

8. 8. Multi plate clutches are also known as
a) Wet clutch
b) Dry clutch
c) Solid clutch
d) Interference clutch
Ans. a

9. Torque transmitting capacity of a single plate clutch is
a) Equal to multi plate clutch
b) More than multi plate clutch
c) Less than multi plate clutch
d) Not related to multi plate clutch
Ans. c

10. In two wheeler motor cycles:
a) We use single plate clutch
b) We use both single and multi-plate clutch
c) we use multi-plate clutch
d) we do not use clutches
Ans. c

11. Heat engine converts chemical energy of fuel in to
a) Mechanical energy
b) Magnetic energy
c) Potential energy
d) Electrical energy
Ans. a

12. Which of the following is used to draw the parallel lines and to find the center of round
a) Vernier caliper
b) micrometer
c) Surface gauge
d) pyrometer
Ans. c

13. C clamp is used for
a) Holding material in tight position
b) measuring length
c) Drawing circular shape on material
d) Drilling hole
Ans. a

14. If size of bolt is M16 “M” stands for
a) Mild steel
b) Metric thread
c) Millimeter
d) Mean diameter
Ans. b

9. 15. _______ is not a part of the transmission system
a) Clutch
b) Wheels
c) Gear box
d) Axles
Ans. d

16. Dial test indicator is used for measuring
a) Temperature
b) viscosity
c) deviation of any object from an expected standard
d) density
Ans. c

17. SI unit of velocity is:
a) m/s
b) m/s
2

c) Kg/s
d) s/m
Ans. a

18. 6 Wheelers have how many axles?
a) 1
b) 2
c) 3
d) 6
Ans. c

19. Bevel protector is used for
a) deviation of any object from an expected standard
b) temperature
c) viscosity
d) measuring or marking off angles
Ans. d

20. Snips are hand tools used to
a) Drill holes in metals
b) Marking center of circle
c) Cut sheet metal and other tough webs
d) Measuring temperature in furnace
Ans. c

21. Snips are also known as
a) shear
b) Dial test indicator
c) Bevel gauge
d) protractor
Ans. a

10. 22. We should wear goggles while welding to
a) Long good
b) Protect eyes from sunlight
c) Protect the eyes from heat and optical radiation produced by the welding
d) It increases welding strength
Ans. c

23. The size of bolt is M30, it means
a) Metric thread & diameter 30 mm
b) Metric thread & diameter 30 cm
c) Metric thread & length 30 mm
d) Metric thread & pitch 30 mm
Ans. a

24. In welding MIG stands for
Ans. Metal inert gas

25. In forging operation
a) tensile force is applied on work piece
b) magnetic force is applied on work piece
c) Compressive force is applied on work piece
d) No force is applied on work piece
Ans. c

26. In arc welding electric created between
a) Two electrodes
b) Electrode and base material
c) Electrode and filler material
d) Arc is not created
Ans. b

27. In cars Gears are used to
a) Store fuels b) Measure speeds
c) Transmit power d) Measure acceleration
Ans. c

28. Gear ratio is defined as
a) input speed to output speed b) Output speed to input speed
c) Inside diameter to outside diameter d) Insider friction to outside friction
Ans. a

29. Lubrication is used in gear box
a) To reduce speed of gear
b) To reduce friction and provide cooling for optimal operation and life
c) To provide aesthetic look to gear
d) To decrease acceleration
Ans. b

11. 30. How many axles are there in four wheeler
a) 1
b) 2
c) 3
d) 4
Ans. b

31. Damper springs are used in clutch to
a) Absorb shock and vibration
b) reduce friction
c) Increase velocity
d) Decrease velocity
Ans. a

32. Incorrect free play in clutch will result in
a) Clutch slip
b) Increase in speed
c) Increase in life of clutch
d) Increase in fuel efficiency
Ans. a

33. Which of the following spring is used in heavy vehicles
a) Coil spring
b) Stamp spring
c) Rectangular spring
d) Leaf spring
Ans. d

34. A synchronizer is a kind of clutch which ____
a) Measure speed of car
b) Measure temperature in car engine
c) Let components turning at different speeds to synchronize
d) Measure mileage of cars
Ans. c

35. Which of the following clutch does not use friction for its operation
a) Cone clutch
b) Disk clutch
c) Centrifugal clutch
d) Fluid clutch
Ans. d

36. Which of the following is not a method for gearbox lubrication
a) Gearbox lubrication
b) Oil splash lubrication
c) Forced oil lubrication
d) Wedge lubrication
Ans. d

12. 37. Which of the following is not a function of seal used in gear box
a) Protect bearings against moisture
b) To increase fuel efficiency
c) protect bearings against contaminants
d) prevent the leakage of lubricant
Ans. b

38. Function of bearing in gear is to
a) Increase friction
b) Regulate fuel efficiency
c) reduce friction
d) Prevent the leakage of lubricant
Ans. c

39. Size of gear is denoted by
a) Pitch circle diameter
b) Pressure angle
c) Diameter of pitch
d) Circular pitch
Ans. a

40. Purpose o a leaf spring is to
a) Increase speed of vehicle
b) Decrease speed of vehicle
c) Increase fuel efficiency
d) Provide support to vehicle and to absorb shock and vibration
Ans. d

41. Back lash in gear is
a) Clearance between mating teeth
b) Increase in speed
c) Decrease in speed
d) Fuel efficiency
Ans. a

42. When we apply the brakes in vehicle
a) Potential energy is converted in to kinetic energy
b) Kinetic energy is converted into heat energy
c) Kinetic energy is converted into magnetic energy
d) Magnetic energy is converted into kinetic energy
Ans. b

43. In positive drive system
a) Slipping is allowed
b) Slipping is not allowed
c) Angular velocities of two bodies are not equal
d) Velocity decrease
Ans. b

13. 44. Petrol engine is also known as
a) Diesel engine
b) Gasoline engine
c) High engine
d) Low engine
Ans. b

45. In diesel engine fuel is ignited by
a) Heat generated from compressed air
b) Spark
c) magnet
d) oil
Ans. a

46. Two stroke engine has how many revolution of crankshaft within one power stroke.
a) 1
b) 2
c) 3
d) 4
Ans. a

47. Four stroke engine has how many revolution of crankshaft within one power stroke.
a) 1
b) 2
c) 3
d) 4
Ans. b

48. Coupling is a device which is used to
a) Joint two rotating shafts for power transmission
b) measure tension
c) Transfer current
d) Transfer pressure
Ans. a

49. Function of flywheel in automobiles is
a) Mix fuel and air
b) To control exhaust gas
c) Store energy
d) Decrease velocity
Ans. c

50. The function of valve in engine are
a) To increase fuel capacity
b) To control sped of vehicle
c) To control temperature rise in engine
d) To take the air-fuel mixture into the cylinder and expel the exhaust gaseous
Ans. d

14. 51. Which of the following is not a part of an automobile engine.
a) Cylinder block
b) piston
c) Piston ring
d) Clutch
Ans. d

52. Which of the following is used to provide a seal between the piston and the cylinder wall.
a) Connecting rod
b) Piston ring
c) Bearing
d) clutch
Ans. b

53. Pistons are commonly made of
a) cast alluminium alloy
b) tungsten
c) wood
d) polymers
Ans. a

54. _____ used to increase the low voltage of battery to a very high voltage to produce spark within the engine
cylinder for the combustion of fuel
a) valve
b) ammeter
c) induction coil
d) clutch
Ans. c

55. Which of the following is not a part of carburetor
a) Float Chamber
b) Strainer
c) Throttle Valve
d) Inductor
Ans. d

56. In BS4 engines BS stand for
a) Bharat stage
b) Black stage
c) Bike stage
d) Bike slip
Ans. a

57. Distance between the centers of the front and rear wheels is known as
a) track b) wheel base
c) pitch d) Wheel diameter
Ans. b

15. 58. Which of the following unit is generally used for tyre pressure
a) Kg/m
b) m/s
c) N/m
d) psi
Ans. d

59. Angle between the vertical axis of the wheels used for steering and the vertical axis of the vehicle when viewed
from the front or rear is known as
a) camber
b) addendum
c) slip
d) snip
Ans. a

60. _____ converts the rotation of the steering wheel into a swiveling movement.
a) Clutch system
b) Break system
c) Steering system
d) Fuel system
Ans. c

61. Hydraulic brakes works on
a) Ohm law
b Kirchoff law
c) Newton law
d) Pascal’s law
Ans. d

16. RRB ALP CBT 2 Heat Engine 23-01-2019 shift 2
1. In petrol engine, fuel and air mix together in the
a) Inlet port
b) Combustion chamber
c) Carburetor
d) Injector
Ans. C

2. Hydraulic oil seals are used
a) To increase friction
b) To prevent leakages
c) To prevent vibrations
d) To avoid friction
Ans. B

3. Where is the spark plug clearance set?
a) Between Centre rod and ground electrode
b) Between porcelain and centre electrode
c) Between porcelain and ground electrode
d) Between Terminal and centre electrode
Ans. A

4. Connecting rod small end is connected to the –
a) Cylinder head
b) Crankshaft
c) Piston
d) Cylinder block
Ans. C

5. The dial bore gauge graduations are marked in both clockwise and anti-clockwise direction to measure
a) Deviation
b) Tolerance
c) Allowance
d) Dimension
Ans. A

6. The Ackerman steering layout is designed for –
a) Accident prevention
b) turning steering angles
c) Reducing load on the king pins and stub axles
d) The driver to feel a head position
Ans. C

7. The latest material used for manufacturing the radiator tubes is –
a) Cast iron b) Copper
c) Aluminium d) Brass
Ans. D

17. 8. The most commonly used valve – actuation mechanism in modern cars is
a) Electrical mechanism
b) Overhead valve mechanism
c) Overhead inlet and side exhaust valve mechanism
d) Side valve mechanism
Ans. B

9. In heavy vehicles, the suspension springs provided on rear wheels are –
a) Leaf spring
b) Torsion bar
c) Coil springs
d) Shock absorber
Ans. A

10. What does the Ackerman steering gear consist of?
a) Rolling and sliding pairs
b) Sliding pairs
c) Sliding and rotary pairs
d) Turning pairs
Ans. D

11. What is the term used for the opening and closing of valves in relation to piston movement?
a) Valve mechanism
b) Valve overlap
c) Valve operation
d) Valve timing
Ans. D

12. Which part of the piston is subjected to high pressure and temperature?
a) Land
b) Skirt
c) Crown
d) Ring section
Ans. C

13. Oil rings are used to scrap excessive oil from the bore. The oil ring gap is in the range of –
a) 30.0 mm – 90.0 mm
b) 3.0 mm – 9.0 mm
c) 0.03 mm – 0.09 mm
d) 0.3 mm – 0.9 mm
Ans. D

14. The energy stored in the flywheel is in the form of –
a) Electrical energy
b) Potential energy
c) Kinetic energy
d) Heat energy
Ans. C

18. 15. Which of these is used to lift the vehicle when it is taken for a water service?
a) Hatchet support
b) Round support
c) Half-moon support
d) Horse shoe support
Ans. D

16. A two-stroke engine has ports in the
a) Crankcase
b) Piston
c) Piston rings
d) Cylinder walls
Ans. D

17. The engine valves are closed by
a) Valve springs
b) Crankshaft
c) Timing device
d) Camshaft
Ans. A

18. The principle of a radiator of an engine cooling system is to
a) Spread out the hot water over a large area
b) Act as a reservoir for the water
c) Cause a heat flow by convection current
d) Increase the air speed as it flows over the hot surface
Ans. B

19. Taper roller bearing is used for –
a) Real axles
b) Gear box
c) Propeller shaft
d) Differential
Ans. A

20. Which of these is the best way to clean an oily floor?
a) By putting water
b) By using cotton waste
c) By using bleaching powder
d) By putting saw dust
Ans. D

21. Which type of clutch is used in two wheelers?
a) Multi plate
b) Diaphragm
c) Centrifugal
d) Single plate
Ans. A

19. 22. Braking is produced by the frictional contact between the brake drum and
a) Brake shoe return spring
b) Wheel cylinders piston
c) Expanding cam
d) Brake shoe
Ans. D

23. While starting and engine, the starter motor pinion engage with –
a) Engine crankshaft
b) Differential sun gear
c) Flywheel ring gear
d) Gear box
Ans. C

24. Engine starts but does not run in idle speed because
a) Excess air in inlet manifold
b) Improper idle speed setting
c) Heavy noise in the engine
d) Hunting of the engine
Ans. B

25. When there is an air lock in fuel line, it leads to
a) Uneven engine idling speed
b) Excess delivery from FI pump
c) Late starting of the engine
d) High injector pressure
Ans. C

26. Which type of roller bearing supports the load acting along the axis of the shaft?
a) Radial
b) Thrust
c) Longitudinal
d) Vertical
Ans. B

27. In diesel engine the fuel is ignited by
a) Spark plug
b) Virtue of temperature of compressed air
c) A glow plug
d) An injector
Ans. B

28. In diesel cycle combustion takes place at – [RRB ALP Heat Engine 23/1/2019 Shift 3]
a) constant volume
b) Constant temperture and pressure
c) constante temperture
d) Constant pressure
Ans. D

20. 29. Wire gauge is a measurement of a wire’s –
a) Brittleness
b) Tensile strength
c) Diameter
d) Hardness
Ans. C

30. The purpose of dynamo is –
a) Act as reservior of electrical energy
b) Supply electric power
c) Convert mechanical energy into electrical energy
d) Continually recharge the battery
Ans. D

31. The drive for the diesel fuel feed pump is taken from the –
a) Crankshaft
b) Timing gear
c) Fuel injection camshaft
d) Engine camshaft
Ans. C

32. The instrument used to measure high temperature in the furnaace is
a) Colorimeter
b) Barometer
c) Thermometer
d) Pyrometer
Ans. D

33. Belt slakness is due of
a) Worm shaft
b) Worn chain
c) Worn gear
d) Worn sprocket
Ans. A

34. A hole is driled between the crankshaft main journal and crank pin for –
a) Lubricating the connecting rod bearings
b) Reducing the crank shaft vibrations
c) Reducing the crankshaft weight
d) Balancing the crank shaft
Ans. A

35. Scavenging is done to maintain –
a) Oil pressure
b) Fule consumption
c) Power output
d) Speed
Ans. C

21. 36. Indicated work per cycle is equal to –
a) Mean effective pressure x stroke volume b) Mean effective pressure x bore diameter
c) Mean effectiv pressure x bore arc d) Mean affective pressure x stroke length
Ans. A

37. The air filters used in high speed diesel engiens are generally of the type –
a) Dry filters b) Heaters c) Oil bath filters d) Impingement filters
Ans. C

38. Cyaniding and nitriding are two methods of –
a) Normalising b) Hardening c) Tempering d) Case hardening
Ans. D

39. Higher efficiency can be achieved of an OTTO cycle by increasing the ______
a) fuel intake b) Stroke length c) Cylinder size d) Compression ratio
Ans. D

40. Water circulation in a thermo-syphon cooling system is caused by –
a) The change in density of the water b) A belt driven water impeller
c) Conduction currents d) A gear driven water pump
Ans. A



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Question Paper Links
RRB ALP CBT 2 Heat Engine 23/01/2019 Shift 2
RRB ALP CBT 2 Heat Engine 23/01/2019 Shift 3