SUB-DISCIPLINE: INTERNAL COMBUSTION ENGINE
Chapter: General
History and Development of I.C. Engine
01.01 Thermal efficiency of I. C. engine is ….. than E. C. Engine.
a) Greater
b) Less
c) Same
d) None
01.02. Weight to power ratio is less in ……………………….
a) E.C. Engine
b) I.C. Engine
c) Both a & b
d) None
c) Both a & b
d) None
01.03. I.C. Engine is …………..acting.
a) Single
b) Double
01.04. 4-stroke Diesel engine is an ……………………..
a) I.C. Engine
b) E.C. Engine
c) Both a & b
d) None
01.05. I.C. Engine was invented in the year……………A.D.
a) 1860
b) 1876
c) 1892
d) 1872
01.06. Dr. Rudolf Diesel made the first Diesel engine in the year………AD.
a) 1860
b) 1876
c) 1892
d) 1888
Classification of I. C. Engine
01.07. Petrol engine is an example of ……………… ignition engine.
a) Spark
b) Compression
c) Both a & b
d) None
01.08. Deutz engine Model BF12L 513C fitted on Plassermatic BCM is …… cooled.
a) Air
b) Water
c) Both a & b
d) Oil
01.09. Cummins Engines fitted on Track Machines are ……………. cooled.
a) Air
b) Water
c) Both a & b
d) Oil
01.10. KTA 1150 L engine is a ………………… engine.
a) 6 cylinder
b) 12 cylinder
c) 8 cylinder
d) 18 cylinder
01.11. Kirloskar HA 694 engine fitted on PQRS is a ………… engine.
a) 6 cylinder
b) 12 cylinder
c) 8 cylinder
d) 18 cylinder
01.12.Deutz Engine Model BF 12L 513C is a ................... engine.
a) 6 cylinder
b) 12 cylinder
c) 8 cylinder
d) 18 cylinder
01.13. Stroke Length in Deutz engine model BF 12L 513C is …… cm.
a) 12
b) 5
c) 51
d) 13
01.14. Total displacement volume in Cummins Engine Model NTA-855 L is ……..
a) 855 mm3
b) 855 cm3
c) 855 inch3
d) 855 ft3
01.15. In Cummins engine Model KTA 1150 L, the letter used for application code is
…..
a) K
b) T
c) A
d) L
Chapter: General
Question
Answer
Question
Answer
Question
Answer
01.01
a
01.06
c
01.11
a
01.02
b
01.07
a
01.12
b
01.03
a
01.08
a
01.13
d
01.04
a
01.09
b
01.14
c
01.05
a
01.10
a
01.15
d
Chapter: Constructional Details of I. C. Engine
02.01. Oil sump is generally made of …………………..
a) Cast Iron
b) Aluminium
c) Forged steel
d) Copper
02.02. In 4-stroke engines minimum ………... Compression rings are used.
a) 0
b) 1
c) 2
d) 3
02.03. In 4-stroke engines minimum ………... oil control ring is used.
a) 0
b) 1
c) 2
d) 3
02.04 .Piston and connecting rods are connected by ……..
a) Circlip
b) Rings
c) Gudgeon pin
d) Bush
02.05. Piston pin and crankpin of crankshafts are joined by ……..
a) Gudgeon pin
b) Connecting Rod
c) piston
d) Rings
02.06. Small end of connecting rod is connected with ……………..
a) Piston
b) Gudgeon pin
c) Crank pin
d) Camshaft
02.07. Center to centre distance between the crankpin and main journal is …… of the
piston stroke.
a) Same
b) Half
c) Twice
d) Quarter
02.08. No. of teeth on camshaft gear is ……………. that of the nos. of teeth on
crankshaft gear.
a) Half
b) Same
c) Twice
d) Thrice
02.09. Speed of camshaft is …………… to that of crank shaft.
a) Half
b) Same
c) twice
d) Thrice
02.10. In Cummins engines ……… cams are on camshaft for each cylinder.
a) 1
b) 2
c) 3
d) 0
02.11. Normally inlet valves are made of ……. alloy steel.
a) Nickel chromium
b) Silicon Chromium
c) Both a and b
d) None
02.12. Normally exhaust valves are made of ……. alloy steel.
a) Nickel chromium
b) Silicon Chromium
c) Both a and b
d) None
02.13. Normally valve face angle is ………..
a) 00
b) 150
c) 450
d) 900
02.14. Push rod is fitted in between …………. and ……….
a) Cam, Tappet
b) Adjusting Screw, Tappet
c) Valve, Cam
d) Valve, Tappet
02.15. Ratio of No. of teeth on crankshaft gear to the P.T. pump gear is ………..
a) 1:1
b) 1:2
c) 1:1/2
d) 1/2:1
Chapter: Constructional Details of I. C. Engine
Question
Answer
Question
Answer
Question
Answer
02.01
b
02.06
a
02.11
a
02.02
c
02.07
b
02.12
b
02.03
b
02.08
c
02.13
c
02.04
c
02.09
a
02.14
b
02.05
b
02.10
c
02.15
a
Chapter: Basic Terminology and Working Principle of I. C. Engine
Basic Terminology
03.01. The upper most extreme point beyond which piston cannot go in upward
direction is called ………
a) TDC
b) BDC
c) Clearance
d) Stroke
03.02. The bottom most extreme point beyond which piston cannot go in downward
direction is called ………
a) TDC
b) BDC
c) Clearance
d) Stroke
03.03. The complete movement of piston from TDC to BDC or vice versa is called
……
a) Stroke
b) Stroke length
c) Clearance
d) Swept
03.04. The volume of cylinder above TDC is called …………
a) Clearance volume
b) Swept Volume
c) Stroke
d) Bore
03.05. The volume of cylinder between TDC and BDC is called ……
a) Clearance volume
b) Swept Volume
c) Stroke
d) Bore
03.06. Diameter of engine cylinder is known as ……………
a) Bore
b) Clearance volume
c) Swept volume d) Stroke Length.
Working Principle of 4-Stroke Diesel Engine
03.07. Inlet valve opens in ……………………... Stroke.
a) Suction
b) Compression
c) Power
d) Exhaust
03.08. Diesel is injected at the end of …………… Stroke.
a) Suction
b) Compression
c) Power
d) Exhaust
03.09. In four stroke Diesel engine, at the end of compression stroke, pressure raises
up to …………… bar.
a) 28
b) 180
c) 200
d) 300
03.10. In 4-stroke Diesel engine, at the end of compression stroke, the temperature
rises up to …………
a) 25000C
b) 2000C
c) 2500C
d) 5500C
03.11. Self ignition temperature of diesel is approximately ……… 0C.
a) 5500C
b) 4400C
c) 25000C
d) 2000C
03.12. Both the valves remains closed at the end of ……… stroke.
a) Suction
b) Compression
c) Power
d) Exhaust
03.13. In 4 stroke diesel engine, one working cycle gets completed in ….. revolutions
of crankshaft.
a)
1
b) 2
c) 3
d) 4
03.14. In 4 stroke diesel engine, one working cycle gets completed in ….. revolutions
of camshaft.
b)
1
b) 2
c) 3
d) 4
Working Principle of 2-Stroke Diesel and 2 & 4-Stroke Petrol Engine
03.15. 4-stroke Petrol engine works on ………….. cycle
a) Otto
b) Diesel
c) Carnot
d) Dual
03.16. Piston moves from BDC to TDC in …… stroke.
a) Suction
b) Compression
c) Power
d) None
03.17. In 4-stroke petrol engines at the end of compression stroke pressure rises up
to…. bar
a) 28
b) 8-13
c) 200-300
d) 14-20
03.18. Spark is given by the spark plug at the end of ………..Stroke
a) Suction
b) Compression
c) Power
d) Exhaust.
03.19. In two stroke petrol engine lube oil is put in ……….
a) Petrol Tank
b) Sump
c) Crankcase
d) None
03.20. In two stroke engines, one working cycle gets completed in …….. revolution
of crankshaft.
a) 1
b) 2
c) 3
d) 4
03.21. Spark plug is an essential component of …………… engine
a) Petrol
b) Diesel
c) Both a & b
d) None
03.22. Injector is an essential component of …………… engine
a) Petrol
b) Diesel
c) Both a & b
d) None
03.23. Carburetor is an essential component of …………… engine
a) Petrol
b) Diesel
c) Both a & b
d) None
Combustion of Fuel
03.24. Specific gravity of high speed diesel is in the range of …….…
a) 0.82-0.92
b) 1.80-3.00
c) 4.5-5.00
d) 1.24-1.26
03.25. Minimum Cetane No. of H.S.D. is ………………………..…
a) 30
b) 35
c) 45
d) 60
03.26. As an impurity ………. Sulphur is available in High Speed Diesel.
a) 1%
b) 0.5%
c) 2%
d) 3%
03.27. Incomplete combustion results in production of ………………………
a) CO
b) CO2
c) C
d) H2O
03.28. …. .. part of carbon mono-oxide in 10,000 parts of air is dangerous to breathe.
a) 1
b) 5
c) 15
d) 2
03.29. The time elapsed between the start of fuel injection and first appearance of
flame is called ….
a) Ignition delay
b) Uncontrolled combustion
c) Before burning
d) After Burning
03.30. Rapid and uncontrolled combustion starts at the end of ………………………
a) Ignition delay
b) Controlled combustion
c) After burning
d) Combustion
03.31. Maximum pressure in the combustion chamber is reached in the stage of
…………
a) Ignition delay
b) Rapid & uncontrolled combustion
c) Controlled combustion
d) After burning
03.32. Maximum temperature in the combustion chamber is reached in the stage
of…………….
a) Ignition delay
b) Rapid & uncontrolled combustion
c) Controlled combustion
d) After burning
Actual Working cycle of 4-stroke Diesel Engine
03.33. In actual working cycle of 4-stroke diesel engine …….valve opens in exaust
stroke.
a) Inlet
b) Exhaust
c) Injector
d) None
03.34. In actual working cycle of 4-stroke diesel engine, both the valves remains
closed at the end of …………..stroke.
a) Suction
b) Compression
c) Exhaust
d) None
03.35. Diesel is injected inside the engine cylinders at the end of ….. Stroke.
a) Suction
b) Compression
c) Power
d) Exhaust
03.36. In actual working cycle of 4-stroke diesel engine, inlet valve opens … before
TDC.
a) 00-50
b) 50-100
c) 300-400
d) 350-500
03.37. In actual working cycle of 4-stroke diesel engine, inlet valve gets closed ……
after BDC.
a) 50-100
b) 350-500
c) 00-50
d) 350-500
03.38. In actual working cycle of 4-stroke diesel engine, diesel is injected just …
reaching the piston at TDC.
a) Before
b) After
c) On
d) None
03.39. In actual working cycle of 4-stroke diesel engine, compression and expansion
takes place according to …………. Process.
a) Adiabatic
b) Polytrophic
c) Isothermal
d) Isobaric
03.40. In 4-stroke petrol engine ……………is sucked during suction stroke.
a) Air
b) Air petrol mixture
c) Petrol
d) Diesel petrol mixture
Deviations between actual and Theoretical Working cycles
03.41. In actual working cycle, suction takes place at ……………… atmospheric
pressure.
a) Less than
b) Equal to
c) More than
d) None
03.42. In actual working cycle, inlet valve gets closed in ……………… stroke.
a) Suction
b) Compression
c) Power
d) Exhaust
03.43. In actual working cycle, injection of fuel starts ………… before TDC in power
stroke.
a) 140-180
b) 350-500
c) 50-100
d) None
03.44. In actual working cycle, exhaust valve opens ………….. before BDC in power
stroke.
a) 140-180
b) 350-500
c) 50-100
d) None
03.45. In actual working cycle, exhaust valve gets closed …………. after TDC in
suction stroke.
a) 140-180
b) 350-500
c) 50-100
d) None
Firing Orders and VT Diagram
03.46. In Cummins engines, cylinders are counted from ………….. side.
a) Vibration damper
b) Flywheel
c) Both a & b
d) None
03.47. Viewing from flywheel side, diesel engines rotate ……………
a) Clockwise
b) Anticlockwise c) Both a & b
d) None
03.48. In Deutz Engine Model BF 12L 513C, cylinders are counted from ………. side.
a) Vibration damper
b) Flywheel
c) Both a & b
03.49. A-Bank and B-bank are designated in ………………. engine.
d) None
a) MWM
b) Cummins
c) Deutz
d) Kirloskar
03.50. In MWM (Greaves) engine, inlet valve opens ……………… TDC.
a) 10 after
b) 100 after
c) 10 after
d) 10 before
03.51. In MWM (Greaves) engine, fuel injection starts ………. TDC.
a) 100 before
b) 100 after
c) 10 after
d) 10 before
03.52. Valve overlap in MWM (Greaves) Engine is …..….
a) 10
b) 20
c) 100
d) 350
Power flow in multi-cylinder engine
03.53. Power flow gap in 4-cylinder engine is ………………
a) 1200
b) 1800
c) 900
d) 3600
03.54. In a 4 cylinder engine when 1 No. cylinder is at the end of power stroke, 3 No.
cylinder will be at the end of …………… stroke.
a) Suction
b) Compression
c) Power
d) Exhaust
03.55. In a 4 cylinder engine when 3 No. cylinder is in mid-suction stroke, 2 No.
cylinder will be in the mid ……… stroke.
a) Suction
b) Compression
c) Power
d) Exhaust
03.56. Power flow gap in 6 cylinder engine is ………………….
a) 1200
b) 1800
c) 900
d) 3600
03.57. Power stroke over lap in a 6 cylinder engine is ……………
a) 600
b) 1200
c) 1800
d) 900
03.58. In a 6 cylinder engine when 1 No. cylinder is at 1200 power stroke, 5 No.
cylinder will be at ………….. compression stroke.
a) 600
b) 1200
c) 1800
d) 900
Chapter: Basic Terminology and Working Principle of I. C. Engine
Question Answer Question Answer Question Answer Question Answer
03.01
a
03.16
b
03.31
b
03.46
a
03.02
b
03.17
b
03.32
c
03.47
b
03.03
a
03.18
b
03.33
a
03.48
b
03.04
a
03.19
a
03.34
b
03.49
a
03.05
b
03.20
a
03.35
b
03.50
a
03.06
a
03.21
a
03.36
b
03.51
a
03.07
a
03.22
b
03.37
b
03.52
b
03.08
b
03.23
a
03.38
a
03.53
b
03.09
a
03.24
a
03.39
b
03.54
b
03.10
d
03.25
c
03.40
b
03.55
c
03.11
b
03.26
a
03.41
a
03.56
a
03.12
b
03.27
a
03.42
b
03.57
a
03.13
b
03.28
c
03.43
a
03.58
c
03.14
a
03.29
a
03.44
b
03.15
a
03.30
a
03.45
c
Chapter: Air Supply System of Diesel Engine
04.01. Sufficient quantity of fresh air at NTP for complete combustion of 1 liter HSD
is …………
a) 12500 to 14500 ltr
b) 1250 to 1450 ltr
c) 200 to 300 ltr
d) None
04.02. On Cummins engine ……………….. type air cleaner is used.
a) Oil bath
b) Dry paper
c) Both a & b
d) None
04.03. On Kirloskar HA 694 engine …………….. type air cleaner is used.
a) Oil bath
b) Dry paper
c) Both a & b
d) None
04.04. On Deutz engine model BF 12L 513C ................... type of air cleaner is used.
a) Oil bath
b) Dry paper
c) Both a & b
d) None
04.05. On MWM TBD 232/234 engine ………….. type of air cleaner is used.
a) Oil bath
b) Dry paper
c) Both a & b
04.06. Only ……….. element of dry type air cleaner is cleaned.
d) None
a) Outer
b) Inner
c) Both a & b
d) None
04.07. For cleaning dry type air cleaner, air pressure is applied from ……. to
…………
a) Inside, Outside
b) Outside, Inside
c) Both a & b
d) None
04.08. For cleaning air cleaner of Cummins engines, air pressure should be …… bar.
a) 1.5 to 2.0
b) 2.0 to 3.0
c) 3.5 to 4.5
d) None
04.09. Nozzel dia for cleaning air cleaners should not be less than ………… mm.
a) 0.8
b) 0.6
c) 1
d) 3.5
04.10. Nozzel should remain approx ….. away from paper element.
a) 1”
b) 2”
c) 3”
d) 0.5”
04.11. Supercharging is process of supplying air inside the engine cylinder at …...
than atmospheric pressure.
a) Less
b) More
c) Both
d) None
04.12. Turbocharger is a supercharging device which runs by ……..
a) Exhaust gases
b) Engine Gear-trains
c) Both a & b
d) None
04.13. Supercharger is a super charging device which runs by ……
a) Exhaust gases
b) Engine Gear-trains
c) Both a & b
d) None
04.14. Turbocharger runs at ……… rpm.
a) 1000
b) 10000
c) 125000
d) None
04.15. Turbocharged engines should be run at idle for …… minutes before stopping.
a) 1
b) 2
c) 3-5
d) 0
04.16. After cooler is a device used to cool …….
a) Air
b) Oil
c) Fuel
d) Water
04.17. After cooler is fitted …….. Turbocharger.
a) Before
b) After
c) In between
d) None
04.18. Silencer is a ………… system component.
a) Air supply
b) Fuel supply
c) Lubricating
d) Cooling
04.19. Turbocharger is fitted …………… after cooler.
a) Before
b) After
c) Both
d) None
04.20. Air cleaner is fitted …….…. Turbocharger.
a) Before
b) After
c) Both
d) None
04.21. Impeller of Turbocharger is at …………… side.
a) Fresh air
b) Exhaust
c) Both
d) None
04.22. Turbo wheel of Turbocharger is at …………….. side.
a) Fresh air
b) Exhaust
c) Both
d) None
04.23. Oil coming out from Turbocharger goes to …………..
a) Sump
b) Oil gallery
c) Oil cooler
d) Filter
Chapter: Air Supply System of Diesel Engine
Question
Answer
Question
Answer
Question
Answer
04.01
a
04.09
a
04.17
b
04.02
b
04.10
a
04.18
a
04.03
a
04.11
b
04.19
a
04.04
c
04.12
a
04.20
a
04.05
b
04.13
b
04.21
a
04.06
a
04.14
c
04.22
b
04.07
a
04.15
c
04.23
a
04.08
c
04.16
a
Chapter: Fuel Supply System of Diesel Engine
05.01. Liquid fuel is injected with compressed air in ………………… system
a) Air injection
b) Solid injection
c) Both a & b
d) None
05.02. Only liquid fuel is injected and there is no need of compressed air in
……………… system
a) Air injection
b) Solid injection
c) Both a & b
d) None
05.03. Mico-Bosch fuel supply system is a ……...… system.
a) Air injection
b) Solid injection
c) Both a & b
d) None
05.04. Cummins P.T. fuel supply system is a …...… system.
a) Air injection
b) Solid injection
c) Both a & b
d) None
05.05. In Mico-Bosch fuel supply system, fuel first passes through …………….
a) Cloth filter
b) Paper filter
c) Both a & b
d) None
05.06. In Mico-Bosch fuel supply system, fuel is sucked from the diesel tank by ……
a) Fuel Feed pump
b) Fuel injection pump
c) Both a & b
d) None
05.07. In Mico-Bosch fuel supply system, bleeding screws are provided on ……
a) Feed pump
b) Injector
c) Filter body
d) None
c) 100 bar
d) None
05.08. Fuel injection pressure is ………………
a) 28 bar
b) 180 bar
05.09. In Mico-Bosch fuel supply system leakage line starts from ………..
a) Feed pump
b) Fuel injection pump
c) Pump
d) Injector
05.10. In Mico-Bosch fuel supply system relief valve and return line is provided on …
a) Feed pump
b) Fuel injection pump
c) Injector
d) None
c) Water
d) None
05.11. Bleeding Screw is provided to remove ………….
a) Air lock
b) Lube Oil
05.12. Hand priming pump is used in ………………………
a) Mico-Bosch fuel supply system
b) Cummins PT Fuel Supply System
c) Both a & b
d) None
05.13. Hand priming pump is used to force fuel when engine is to be ….
a) Started
b) Stopped
c) Both a & b
d) None
c) Both a & b
d) None
05.14. Fuel feed pump is a ………………
a) Plunger Pump
c) Rotary Pump
05.15. Fuel feed pump is a driven by ………………
a) Eccentric
b) Cam
c) Both a & b
d) None
05.16. Primary filter is made of ……………………
a) Cloth
b) Paper
c) Both a & b
d) None
05.17. Secondary filter is made of ……………………
a) Cloth
b) Paper
c) Both a & b
d) None
c) Bronze Mesh
d) None
c) Both a & b
d) None
05.18. Pre-filter is made of ……..
a) Cloth
b) Paper
05.19. Fuel injection pump is a ………..
a) Plunger Pump
b) Rotary pump
05.20. 6-Cylinder FIP consists of ……… Nos. of plunger pumps.
a) 3
b) 6
c) 12
d) 13
c) Both a & b
d) None
c) Injector
d) None
05.21. Plunger pump in FIP is driven by ………………
a) Cam
b) Eccentric
05.22. Metering of fuel is done in ……………
a) FIP
b) Feed pump
05.23. Injection timing is maintained by ………….
a) Camshaft
b) Delivery valve
c) Injector
d) Feed pump
05.24. In Mico-Bosch Fuel supply system Injector function is to ……..
a) Pressurize fuel b) Atomize & Vaporize
c) Both a & b
d) None
c) FIP
d) None
05.25. Injection pressure is set in ………….
a) Injector
b) Feed pump
05.26. The abbreviation P.T. Stands for ……………
a) Pound-Time
b) Pressure-Time
c) Both a & b
d) None
05.27. Ratio of P.T. pump speed to the crank shaft speed is ……………
a) 1
b) 2
c) 1:2
d) None
c) Both a & b
d) None
05.28. P.T. pump is a ………………..
a) Plunger pump
b) Gear pump
05.29. In Cummins PT fuel supply system, diesel from the tank is drawn by
………………
a) Feed pump
b) PT pump
c) Both a & b
d) None
05.30. Common rail pressure is 200-300 ………….
a) Bar
c) N/m2
b) PSI
d) None
05.31. The P.T. pump has ……………. delivery.
a) Single
b) Multi
c) Both a & b
d) None
05.32. In Cummins P.T. fuel supply system injector plunger is actuated by……..
a) Fuel pressure
b) Cam-mechanism
c) Both a & b
d) None
05.33. In Cummins P.T. fuel supply system injection pressure builds in ……
a) P.T. pump
b) Injector
c) Both a & b
d) None
05.34. In Cummins P.T. fuel supply system, injector return is ……………
a) 80%
b) 10%
c) 20%
d) 55%
05.35. In Cummins P.T. fuel supply system, Bleeding screw is fitted on ……………..
a) Filters
b) P.T. pump
c) Shut down valve
d) None
05.36. In Cummins engine, fuel filter is of …………….
a) Paper
b) Cloth
c) Felt
d) None
05.37. In Cummins P.T. fuel supply system water separator is fitted …… fuel filter.
a) Before
b) After
c) In between
d) None
05.38. In Cummins P.T. fuel supply system N.R.V. is fitted just after …………….
a) Water separator
b) Fuel filter
c) Shutdown valve
d) None
05.39. In PTG fuel pump ‘G’ stands for ……………………
a) Gear control
b) Governor control
c) Gate
d) None
05.40. Filter screen (Mesh filter) is provided in ……………….…….
a) P.T. pump
b) Injector
c) Both a & b
d) None
05.41. In Cummins P.T. fuel supply system, metering is done in …….…..
a) P.T. pump
b) Injector
c) Governor
d) None
05.42. Cummins engines with drilled fuel passages will use …….... injector.
a) Flanged
b) Cylindrical
c) Both a & b
d) None
05.43. Cummins engines equipped with fuel manifold will use …………….. injector.
a) Flanged
b) Cylindrical
c) Both a & b
d) None
05.44. Fuel feed pump is a component of ……………….. fuel supply system.
a) Mico-Bosch
b) Cummins PT
c) Both a & b
d) None
05.45. Hand priming pump is a component of …………….. fuel supply system.
a) Mico-Bosch
b) Cummins
c) PT
d) None
05.46. N.R.V. is normally provided in ……………… fuel supply system.
a) Mico-Bosch
b) Cummins
c) Both a & b
d) None
c) Both a & b
d) None
05.47. Pulsation damper is provided in ………………
a) PT pump
b) Fuel injection pump
05.48. Plunger pump is provided in …………………
a) PT Pump
b) FIP
c) Both a & b
d) None
c) Both a & b
d) None
05.49. Gear pump is provided in ………………
a) PT pump
b) FIP
05.50. Delivery valve is provided in …………………
a) PT pump
b) FIP
c) Both a & b
d) None
05.51. Screen Mesh filter is provided in ………………
a) PT pump
b) FIP
c) Both a & b
d) None
05.52. Metering Orifice is provided in …………………..
a) Cummins injector
b) Mico-Bosch injector c) Both a & b
d) None
05.53. Most diesel fuel has cetane no. ……………..
a) 40 to 50
b) 200 to 300
c) 80-100
d) None
05.54. Cetane No. of α-Methyl Naphthalene is assigned as………..
a) 40
b) 50
c) 0
d) 100
c) 40
d) 50
05.55. Normal Heptanes is assigned octane no. as ……..
a) 0
b) 100
05.56. Sludge is a mixture of lubricating substance and …………..
a) Fuel
b) Water
c) Air
d) None
05.57. Diesel Tank level should be kept almost …………… filled.
a) Half
b) Full
c) Three-Quarter
d) None
05.58. In Diesel engines, air lock means for stopping of ……….. supply.
a) Fuel
b) Air
c) Oil
d) Water
Chapter: Fuel Supply System of Diesel Engine
Question Answer Question Answer Question Answer Question Answer
05.01
a
05.16
a
05.31
a
05.46
b
05.02
a
05.17
b
05.32
b
05.47
a
05.03
b
05.18
c
05.33
b
05.48
b
05.04
a
05.19
a
05.34
a
05.49
a
05.05
a
05.20
b
05.35
c
05.50
b
05.06
a
05.21
a
05.36
a
05.51
a
05.07
c
05.22
a
05.37
a
05.52
a
05.08
b
05.23
a
05.38
c
05.53
a
05.09
d
05.24
b
05.39
b
05.54
c
05.10
b
05.25
a
05.40
a
05.55
a
05.11
a
05.26
b
05.41
b
05.56
b
05.12
a
05.27
a
05.42
b
05.57
b
05.13
a
05.28
b
05.43
a
05.58
a
05.14
a
05.29
b
05.44
a
05.15
a
05.30
b
05.45
a
Chapter: Lubricating System of Diesel Engine
06.01. When a film of lubricating oil is imposed between the two surfaces, the friction
produced is called ……………
a) Solid friction
b) Fluid friction
c) Boundary friction
d) None
06.02. The lube oil with ………….. viscosity variation is preferred.
a) Minimum
b) Maximum
c) Both a & b
d) None
06.03 .The flash point of lube oil should be sufficiently……….
a) High
b) Low
c) Medium
d) None
06.04. The pour point of lube oil should be …… than the lowest temperature
encountered in the engine.
a) Less
b) More
c) Equal
d) None
06.05. Corrosion means destruction of a solid body by…….. action.
a) Chemical
b) Mechanical
c) Pneumatic
d) None
06.06. A dispersant/detergent is added to the lube oil to………particles clotting.
a) Prevent
b) Promote
c) Both a & b
d) None
06.07. Viscosity test of winter grade oil is done at ………
a) 00F
b) -180F
c) 2100F
d) 990F
06.08. Viscosity test of summer grade oil is done at ………
a) 00F
b) -180F
c) 2100F
d) 990F
06.09. SAE CF4 15W40 oil is meant for use up to………
a) -100C
b) 00C
c) -150C
d) 400
c) Oil Cooler
d) None
06.10. Lube oil from turbocharger goes to ……
a) Oil gallery
b) Sump
06.11. Lube oil from super bypass filter goes to ……
a) Oil gallery
b) Sump
c) Oil Cooler
d) None
c) Oil Pump
d) None
c) Both a & b
d) None
06.12. Oil from full flow filter goes to ……
a) Pressure regulator
b) Oil Cooler
06.13. Oil to main bearings comes from…… ……
a) Main Oil Gallery
b) Connecting rod
06.14. Piston cooling pump draws oil from ………
a) Sump
b) Full flow filter
c) Oil Pump
d) Super by pass filter
06.15. Lubrication system adapted in 2-stroke petrol engine is…….
a) Petroil system
b) Splash system c) Pressure System
d) None
06.16. A scoop is made in the lowest part of the connecting rod in …………. system
of lubrication.
a) Petroil system
b) Splash system c) Pressure System
d) None
06.17. Dry sump system is used in engines of ………
a) Road Vehicles
b) Aeroplane
c) Marine
d) None
06.18. Lube oil pump is used in……..system of lubrication
a) Petrol
b) splash
c) Pressure
d) Dry sump
06.19. Lube oil pump draws oil through the ….
a) Strainer
b) Full flow filter
c) Main oil gallery
d) None
06.20. Oil pump used almost universally in engines …………
a) Gear pump
b) Plunger pump
c) Rotor pump
d) Vane pump
06.21. A ………… valve is provided in many oil pumps.
a) Relief
b) Unloader
c) D.C.
d) None
06.22. Strainer is attached at the……………of oil pump.
a) Inlet
b) Outlet
c) Both a & b
d) None
06.23. Super bypass filter is used on…………….engines
a) MWM
b) Cummins
c) Kirloskar
d) SUN
c) Water
d) Fuel
06.24. In oil cooler….. is cooled.
a) Oil
b) Air
06.25. The lube oil level should be between….and… mark of Dipstick.
a) T&B
b) H&L
c) U&L
d) H&B
c) Meter
d) None
06.26. For checking lube oil …….. is used.
`a) Dipstick
b) Glass Gauge
06.27. Oil pressure gauge fitted on driving panel will be mostly of …… type.
a) Electrical
b) Mechanical
c) Both a & b
d) None
06.28. Oil pressure gauge fitted on driving panel will be mostly of ….. type.
a) Electrical
b) Mechanical
c) Both a & b
d) None
06.29. The oil pressure indicating LED glows……..when oil pressure becomes low.
a) On
b) Off
c) Both a & b
d) None
06.30. Oil pressure indicating LED gives indication of …. lube oil pressure.
a) Increased
b) Decreased
c) First A then B
d) None
06.31. Minimum oil pressure rating at idle speed is …… bar.
a) 1.0
b) 1.5
c) 2.5
d) 3.5
06.32. Minimum oil pressure rating at rated speed is……bar.
a) 1.9
b) 1.5
c) 2.5
d) 3.5
06.33. The escaping of burnt gases from combustion chamber to the crank case
chamber is called …..
a) Blow bye
b) Blow down
c) Leakage
d) Seepage
c) Lubricating
d) Cooling
06.34. Breather is component of …….. system.
a) Air supply
b) Fuel Supply
06.35. Weak relief valve will result in …… lube oil pressure
a) Low
b) High
c) Medium
d) None
06.36. Excessive clearance in bearings will result in …… lube oil pressure.
a) Low
b) High
c) Both a and b
d) None
06.37. Worn out oil control ring results in ...........
a) Low lube oil Pressure
b) High lube oil consumption
c) Both a and b
d) None
06.38. Excessive clearance in intake valve guide results in …………
a) Low lube oil Pressure
b) High lube oil consumption
c) Both a and b
d) None
06.39. Clogged oil breather results in ………………..
a) Low lube oil Pressure
b) High lube oil consumption
c) Both a and b
d) None
06.40. Oil should be drained when engine is ………….
a) Hot
b) Cold
c) Both a and b
d) None
06.41. Oil level should be kept at …… mark during lube Oil replacement.
a) H
b) L
c) T
d) B
06.42. Filter cane should be ……… with new oil before fitment.
a) Filled
b) Not filled
c) Both a and b
d) None
06.43. Centrifuge is provided in …………….. system.
a) Lube oil supply
b) Air supply
c) Fuel supply
d) Cooling
c) Cummins
d) SUN
c) Cummins
d) SUN
06.44. Centrifuge is fitted on………engine.
a) MWM
b) Kirloskar
06.45. Centrifuge is fitted on ………….. engines.
a) Kirloskar
b) Deutz
06.46. Location of strainer is inside …….
a) Sump
b) Cylinder Block
c) Timing Cover
d) Head
06.47. Location of lube oil pump on KTA-1150-L engine is ……………
a) In sump
b) On cylinder block
c) On Crank case
d) On Head
06.48. Location of relief valve on KTA-1150-L engine is
a) In Sump
b) On Cylinder Block c) In Oil Pump
d) In Main Oil Gallery
06.49. Super bypass filter is ……. then inline lube oil filters
a) Finer
b) Coarser
c) Both a & b
d) None
06.50. Lube oil pump is…….driven
a) Belt
b) Gear
c) Both a & b
d) None
06.51. During starting of Cummins engine by pass switch is pressed to bypass ……
a) Bypass filter
b) Lube oil Pressure safety Circuit
c) Shutdown valve
d) Turbocharger
Chapter: Lubricating System of Diesel Engine
Question Answer Question Answer Question Answer Question Answer
06.01
b
06.14
a
06.27
a
06.40
a
06.02
a
06.15
a
06.28
b
06.41
a
06.03
a
06.16
b
06.29
a
06.42
a
06.04
a
06.17
b
06.30
b
06.43
a
06.05
a
06.18
c
06.31
b
06.44
a
06.06
a
06.19
a
06.32
c
06.45
b
06.07
a
06.20
a
06.33
a
06.46
a
06.08
c
06.21
a
06.34
c
06.47
c
06.09
a
06.22
a
06.35
a
06.48
c
06.10
b
06.23
b
06.36
a
06.49
a
06.11
b
06.24
a
06.37
b
06.50
b
06.12
b
06.25
b
06.38
b
06.51
b
06.13
a
06.26
a
06.39
b
Chapter: Cooling System of Diesel Engine
07.01. Temperature of burning air fuel mixture is of the order of ………...
a) 250C
b) 2500C
c) 25000 C
d) 15000C
07.02. Temperature of engine must be controlled in the range of ………………
a) 710C-880C
b) 740C-850C
c) 2000C-2500C
d) None
07.03. Cooling system should become functional when engine …………….
a) Warms up
b) Cools down
c) is started
d) runs at rated rpm
07.04. Engine warms up faster in………………………..….system.
a) Air cooling
b) Water Cooling
c) Both a & b
07.05. Air cooled engines are…………..than water cooled engines
d) None
a) Lighter
b) Heavier
c) Both a & b
d) None
07.06. Air cooling is………………..efficient than water cooling.
a) Less
b) More
c) Both a & b
d) None
07.07. Total length of finned cylinder barrel is ................... times the cylinder bore.
a) 1 to1.5
b) 0.5 to 1.5
c) 1.5 to 2.0
d) None
07.08. The normal operating water temperature of the engine should be......
a) 710C-880C
b) 740C-820C
c) Both a & b
d) None
07.09. The most suitable operating water temperature of engine is assumed ……
a) 710C-880C
b) 740C-850C
c) 820C
d) None
07.10. Radiator upper tank is connected to the water ………… of the engine.
a) Outlet
b) Inlet
c) Both a & b
d) None
07.11. Radiator lower tank is connected to the water …………… of the engine.
a) Outlet
b) Inlet
c) Both a & b
d) None
07.12. Thermostat valve starts opening at ………….
a) 710C
b) 740C
c) 850C
d) 880C
07.13. Thermostat valve opens completed at ………….
a) 710C
b) 740C
c) 850C
d) 880C
07.14. When Thermostat, valve opens completely, water from engine goes to ……..
a) Radiator
b) Water Pump
c) Both a & b
d) None
07.15. When Thermostat valve closed completely, water from engine goes to ……….
a) Radiator
b) Water Pump
c) Both a & b
d) None
07.16. Radiator fan ………… air through radiator.
a) Draws
b) Throws
c) Both a & b
d) None
07.17. Relief valve and vacuum valve is provided in radiator cap in ...... water cooling
system.
a) Closed
b) Open
c) Both a & b
d) None
07.18. Relief valve is set to open at a pressure of …… kg/cm2
a) 0.55 to 1.10 kg/cm2
b) 28 kg/cm2
c) 6.5-7.0 kg/cm2
d) None
07.19. A 1.10kg/cm2 valve would provide a boiling point of ……..
a) 1000C
b) 1250C
c) 850C
07.20. Coolant Additive Concentrate (CAC) is used in ……….. engines.
d) 750C
a) Cummins
b) MWM
c) Both a & b
d) None
07.21. Nalcool 2000 is used in …………… engines.
a) Cummins
b) MWM
c) Both a & b
d) None
c) 1:20
d) None
c) 1:20
d) None
07.22. The ratio of CAC: Water is………………
a) 1:15
b) 1:30
07.23. The ratio of Nalcool 2000: Water is………
a) 1:15
b) 1:30
07.24. Maxtherm additive is used in …………… engines.
a) Cummins
b) MWM
c) Both a & b
d) None
07.25. The ratio of Maxtherm additive: Water is ……….
a) 1:15
b)1:30
c) 1:20
d) None
07.26. In hot and shut down engine water should ………
a) Be Filled
b) Not be filled
c) Both a & b
d) None
07.27. In hot running engine water ……… filled slowly.
a) May be
b) should not be
c) Both a & b
d) None
07.28. Internal leak of water may produce ……… vapour in exhaust gases.
a) White
b) Black
c) Brown
d) Colourless
07.29. Defective cylinder head gasket results in ………. leakage
a) Internal
b) External
c) Both a & b
d) None
07.30. Recommended pH value of coolant on Cummins engine is…………
a) 7
b) less than 7
c) 8.5 to 10.5
d) 8.0 to 10.0
07.31. Recommended pH value of coolant on MWM engine is …………
a) 7
b) less than 7
c) 8.5 to 10.5
d) 8.0 to 10.0
07.32. Overcooling …………. volumetric efficiency.
a) Increases
b) Decreases
c) Both a & b
d) None
07.33. Over cooling ……… thermal efficiency.
a) Increases
b) Decreases
c) Both a & b
d) None
07.34. Blower is used in ………. cooling system.
a) Air
b) Water
c) Both a & b
d) None
07.35. Fins are used in …………. cooling system.
a) Air
b) Water
c) Both a & b
d) None
07.36. Radiator fan is used in ………. cooling system.
a) Air
b) Water
c) Both a & b
d) None
07.37. In India, Thermostat valve is used in …………Cooling system.
a) Air
b) Water
c) Both a & b
d) None
07.38. Deutz BF 12L 513C is equipped with …….. cooling system.
a) Air
b) Water
c) Both a & b
d) None
07.39. MWM (Greaves) TBD 232 V12 engine is equipped with …… cooling system.
a) Air
b) Water
c) Both a & b
d) None
07.40. Cummins KTA-1150-L engine is equipped with ……….. cooling system.
a) Air
b) Water
c) Both a & b
d) None
07.41. Kirloskar HA 694 is equipped with ……… cooling system.
a) Air
b) Water
c) Both a & b
d) None
07.42. SUN 6105I engine is equipped with ……….. cooling system.
a) Air
b) Water
c) Both a & b
d) None
07.43. Air charge cooler on Deutz BF 12L 513C is ……….. cooled.
a) Air
b) Water
c) Both a & b
d) None
07.44. Inter cooler on MWM TBD 232 V12 Engine is…………..cooled.
a) Air
b) Water
c) Both a & b
d) None
07.45. After cooler on Cummins engines is ……………..cooled
a) Air
b) Water
c) Both a & b
d) None
Chapter: Cooling System of Diesel Engine
Question Answer Question Answer Question Answer Question Answer
07.01
c
07.13
c
07.25
c
07.37
b
07.02
c
07.14
a
07.26
b
07.38
a
07.03
a
07.15
b
07.27
a
07.39
b
07.04
a
07.16
a
07.28
a
07.40
b
07.05
a
07.17
a
07.29
a
07.41
a
07.06
a
07.18
a
07.30
c
07.42
a
07.07
a
07.19
b
07.31
d
07.43
a
07.08
a
07.20
a
07.32
a
07.44
b
07.09
c
07.21
b
07.33
b
07.45
b
07.10
a
07.22
a
07.34
a
07.11
b
07.23
b
07.35
a
07.12
b
07.24
b
07.36
b
Chapter: Maintenance Schedule of Engine KTA 1150 L
08.01. In KTA 1150 L, Engine oil is checked in ………………. schedule.
a) Daily
b) 50hrs
c) 080hrs
d) 200hrs
08.02. In KTA 1150 L, Coolant level is checked in ……….. schedule.
a) Daily
b) 50hrs
c) 080hrs
d) 200hrs
08.03. In KTA 1150 L, Air cleaner vaccum indicator is checked in ………. schedule.
a) Daily
b) 50hrs
c) 080hrs
d) 200hrs
08.04. In KTA 1150 L, V-belt tension is checked in …… schedule.
a) Daily
b) 50hrs
c) 080hrs
d) 200hrs
08.05. In KTA 1150 L, Air tank is drained ……….. the day’s work.
a) After
b) Before
c) Both a & b
d) None
08.06. In KTA 1150 L, Water separator is drained ……. starting the engine.
a) Before
b) After
c) Both a & b
d) None
08.07. In KTA 1150 L, V-belt condition is checked in ……… schedule.
a) Daily
b) 50hrs
c) 080hrs
d) 200hrs
08.06. In KTA 1150 L, Brake shoes condition is checked in ……….. schedule.
a) Daily
b) 50hrs
c) 080hrs
d) 200hrs
08.09. In KTA 1150 L, Electrolyte level and specific gravity of batteries is checked in
….. schedule.
a) Daily
b) 50hrs
c) 080hrs
d) 200hrs
08.10. In KTA 1150 L, Outer air filter is cleaned in ………. schedule.
a) Daily
b) 50hrs
c) 080hrs
d) 200hrs
08.11. In KTA 1150 L, High water temperature safely device is checked in ……
schedule.
a) Daily
b) 50hrs
c) 080hrs
d) 200hrs
08.12. In KTA 1150 L, Low lube oil pressure safely deice is checked in ...... schedule.
a) Daily
b) 50hrs
c) 080hrs
d) 200hrs
08.13. In KTA 1150 L, Mounting Bolt of engine is examined in ……….. schedule.
a) Daily
b) 50hrs
c) 080hrs
d) 200hrs
08.14. In KTA 1150 L, engine oil is replaced at ………..…. hrs.
a) 080
b) 200
c) 250
d) 0800
08.15. In KTA 1150 L, lube oil filter is replaced at ………..…. hrs.
a) 080
b) 200
c) 250
d) 0800
08.16. In KTA 1150 L, fuel filter is replaced at ………..…. hrs.
a) 080
b) 200
c) 250
d) 0800
08.17. In KTA 1150 L, lube oil by pass filter is replaced at …………. hrs.
a) 080
b) 200
c) 250
d) 0800
08.18. In KTA 1150 L, Crank case Breather is cleaned in …………. schedule
a) 080
b) 200
c) 250
d) 0800
08.19. In KTA 1150 L, Outer and Inner engine air cleaner element is replaced at …..
hrs.
a) 200
b) 250
c) 500
d) 0800
08.20. In KTA 1150 L, Self Starter is overhauled in schedule ……………..
a) III
b) IV
c) V
d) VI
08.21. In KTA 1150 L, Alternator is overhauled in schedule ……………….
a) III
b) IV
c) V
d) VI)
08.22. In KTA 1150 L, Injector is overhauled in schedule …………..
a) III
b) IV
08.23. In KTA 1150 L,
a) III
c) V
d) VI
Fuel pump is overhauled in schedule ……………
b) IV
c) V
d) VI
08.24. In KTA 1150 L, Rocker cover Gasket is replaced in schedule ……….
a) III
b) IV
c) V
d) VI
08.25. In KTA 1150 L, Diesel Tank is cleaned in schedule ……….
a) III
b) IV
c) V
d) VI
08.26. In KTA 1150 L, Cooling Coil is cleaned in schedule …………
a) III
b) IV
c) V
d) VI
08.27. In KTA 1150 L, Schedule V is done at ………….. hours of engine running.
a) 200
b) 0800, 3000 & 5000
c) 2000 & 4000
d) 6000
08.28. In KTA 1150 L, Water Separator and Air Oiler is overhauled in schedule ……
a) III
b) IV
c) V
d) VI
08.29. In KTA 1150 L, Air unloaded is overhauled in schedule …………….
a) III
b) IV
c) V
d) VI
08.30. In KTA 1150 L, Schedule VI is done at ….….. hours of engine running
a) 200
b) 0800, 3000 & 5000
c) 2000 & 4000
d) 6000
08.31. In KTA 1150 L, Engine mounting pad is replaced in schedule…………..
a) III
b) IV
c) V
d) VII
08.32. In KTA 1150 L, Dynamic Balance of vibration Damper is checked is schedule
……
a) III
b) IV
c) V
d) VII
08.33. In KTA 1150 L, RPM of engine radiator from should not be less than ……
a) 900
b) 1600
c) 2080
d) 2300
08.34. In KTA 1150 L, while checking Tension of V belt, deflection at Centre should
not be more than …….. mm.
a) 08mm
b) 15mm
c) 25.4mm
d) 20mm
Chapter: Maintenance Schedule of Engine KTA 1150 L
Question Answer Question Answer Question Answer Question Answer
08.01
a
08.11
c
08.21
c
08.31
d
08.02
a
08.12
c
08.22
c
08.32
d
08.03
a
08.13
c
08.23
c
08.33
b
08.04
a
08.14
c
08.24
c
08.34
b
08.05
a
08.15
c
08.25
c
08.06
a
08.16
c
08.26
c
08.07
b
08.17
c
08.27
b
08.08
b
08.18
b
08.28
d
08.09
b
08.19
c
08.29
d
08.10
b
08.20
c
08.30
c
Chapter: Maintenance Schedule of Engine Deutz BF 12 L 513 C
09.01. In Deutz BF 12 L 513 C, Contamination indicator (pilot lamp) for dry type air
cleaner is checked in ……. schedule.
a) Daily
b) 50hrs
c) 100hrs
d) 200hrs
09.02. In Deutz BF 12 L 513 C, Outer air cleaner element of Deutz Engine is cleaned
with ……… pressure of dry air.
a) 1.5 bar
b) 2.5 bar
c) 3.5bar
d) 6.5bar
09.03. In Deutz BF 12 L 513 C, Oil in the wet type air cleaner is changed in …..
Schedule.
a) Daily
b) 50hrs
c) 100hrs
d) 200hrs
09.04. In Deutz BF 12 L 513 C, Battery plug connection are cleared and petroleum
jelly is applied in ………..
a) Daily
b) 50hrs
c) 100hrs
d) 200hrs .
09.05. In Deutz BF 12 L 513 C, Minimum Specific gravity should be ……..
a)1.180
b) 1.090
c) 1.240
d) 1.260
09.06. In Deutz BF 12 L 513 C, Fuel pre-filler (Wire mesh) is cleaned at …… engine
hrs schedule at
a) 50
b) 100
c) 200
d) 1000
09.07. In Deutz BF 12 L 513 C, twin stage fuel filter element is changed in ………..
Engine hrs Schedule
a) 50
b) 100
c) 200
d) 1000
09.06. In Deutz BF 12 L 513 C, engine oil is changed at engine ………. hrs.
a) 100
b) 200
c) 250
d) 300
09.09. In Deutz BF 12 L 513 C, Clutch Drive shaft bearings are greased in engine hrs
…... schedule.
a) 50
b) 100
c) 200
d) 1000
09.10. In Deutz BF 12 L 513 C, Clutch fluid level in container is checked in engine
hrs. …... schedule.
a) 50
b) 100
c) 200
d) 1000
09.11. In Deutz BF 12 L 513 C, Cooling coil is decarbonized in schedule …………..
a) IV
b) V
c) VI
d) VII
09.12. In Deutz BF 12 L 513 C, High pressure fuel pipes clamps are checked in
schedule ……..
a) IV
b) V
c) VI
d) VII
09.13. In Deutz BF 12 L 513 C, Crankcase Breather element is replaced in schedule
……
a) IV
b) V
c) VI
d) VII
09.14. In Deutz BF 12 L 513 C, engine temperature indicator is tested in schedule …..
a) IV
b) V
c) VI
d) VII
09.15. In Deutz BF 12 L 513 C, fuel injection pump and injectors are calibrated in
schedule ……
a) IV
b) V
c) VI
d) VII
09.16. In Deutz BF 12 L 513 C, Blower Assembly is overhauled in schedule ………
a) IV
b) V
c) VI
d) VII
Chapter: Maintenance Schedule of Engine Deutz BF 12 L 513 C
Question Answer Question Answer Question Answer Question Answer
09.01
a
09.06
b
09.11
b
09.02
a
09.07
b
09.12
b
09.03
b
09.06
b
09.13
b
09.04
b
09.09
c
09.14
b
09.05
c
09.10
c
09.15
c
09.16
d
Chapter: Maintenance Schedule of Engine MWM TBD 232 V 12
10.01. Recommended coolant water temperature for MWM TBD 232 V 10 is ……
a) 750C to 850C
b) 710C to 880C
d) None
10.02. Maximum coolant temperature of MWM TBD 232 V 10 is ……
a) 710C
b) 850C
c) 880C
d) 950C
10.03. Safety circuit of MWM TBD 232 V 10 ……. if water temperature rises above
950C
a) Gives buzzer sound
b) Shuts down the engine
c) Both a & b d) None
10.04. As per RDSO Maintenance schedule, lube oil of MWM TBD 232 V 10 is to be
changed at ……
a) 100hrs
b) 105hrs
c) 200hrs
d) 250hrs)
10.05. As per RDSO maintenance schedule, fuel filters of MWM TBD 232 V 10 are to
be changed at ……. hrs.
a) 100
b) 105
c) 200
d) 250
10.06. As per RDSO maintenance schedule, centrifuge of MWM TBD 232 V 10 is to
be cleaned at ……. hrs.
a) 100
b) 105
c) 200
d) 250
10.07. Valve tappet clearance of MWM TBD 232 V10 engine is …… mm in cold
a) 0.2
b) 0.3
c) 0.14
d) 0.27
10.06. As per RDSO maintenance schedule, crankcase breather of MWM TBD 232 V
10 is to be cleaned at ……. hrs.
a) 100
b) 105
c) 200
d) 250
10.09. As per RDSO maintenance schedule, compressor breather of MWM TBD 232
V 10 is to be cleaned at ……. hrs.
a) 100
b) 105
c) 200
d) 250
10.10. As per RDSO maintenance schedule, compressor filter of MWM TBD 232 V
10 is cleaned at ……. hrs.
a) 100
b) 105
c) 200
d) 250
Chapter: Maintenance Schedule of Engine MWM TBD 232 V 10
Question
Answer
Question
Answer
10.01
a
10.06
b
10.02
d
10.07
a
10.03
b
10.06
c
10.04
b
10.09
c
10.05
b
10.10
c
Chapter: Maintenance Steps of Diesel Engine
Maintenance Steps to Improve Performance
11.01. Priming of engine is done to maintain …….. film on bearing surfaces.
a) Coolant
b) Lube oil
c) Fuel
d) Grease.
11.02. Uniform metered fuel and …………. are requirements of fuel regulation.
a) Fine spray
b) Scattered Spray
c) Thick droplets
d) None
11.03. Over speeding causes piston to strike and break …………
a) Rings
b) Injectors
c) Valves
d) Cylinder Head
11.04. During Normal operations, over speeding of engine is protected by ……….
a) FIP
b) Injector
c) Governor
d) Accelerator
11.05. For controlling corrosion in MWM engine …… is added to water in ratio 1:30.
a) CAC
b) Nalcool 2000
c) Nalprep
d) None
Providing Piston Rings on Piston
11.06. …….. most ring is assembled first.
a) Bottom
b) Top
c) Both a & b
d) None
11.07. Piston rings are inserted through piston ……. side
a) Skirt
b) Top
c) both
d) None
11.08. The end gap of piston ring is approximately ……. per inch of piston diameter.
a) 0.001”
b) 0.01”
c) 0.1”
d) 0
11.09. The gap for all the piston rings ………… fall in one line.
a) Should
b) Shouldn’t
c) Both a & b
d) None
11.10. While fitting the piston rings apply sufficient quantity of ……. oil
a) Lube
b) Hydraulic
c) Gear
d) Mustard
c) Both a & b
d) None
11.11. Piston rings should fit …… in the grooves.
a) Tight
b) Free
11.12. For easy insertion of piston rings …….. is used.
a) Ring Expander
b) Ring Compressor
c) Both a & b
d) None
11.13. For easy sliding of piston with rings into liner ... is used.
a) Ring Expander
b) Ring Compressor
c) Both a & b
d) None
11.14. To ensure piston facing in right direction, notch or other markings must face to
the ……… of the engine
a) Front
b) Rear
c) Both a & b
d) None
11.15. In two stroke cylinders, ring gap …… face the port otherwise they may break.
a) Should
b) Shouldn’t
c) Both a & b
d) None
Adjustment of Valve
11.16. In Cummins engines, valve clearance is gap between rocker arm and …….
a) Valve stem
b) Cross head
c) Push Rod
d) None
11.17. In MWM/Kirloskar/Deutz Engines valve clearance is gap between rocker arm
and ….
a) Valve stem
b) Cross head
c) Push Rod
d) None
11.18. Valve clearance is got maxm when piston is at TDC in ……Stroke.
a) Suction
b) Compression
c) Power
d) Exhaust
11.19. At TDC of …… strokes, both the rocker arms will be loose.
a) Suction
b) Compression
c) Power
d) Exhaust
11.20. At TDC of …… strokes, both the rocker arms will be in contact with valve
stems.
a) Suction
b) Compression
c) Power
d) Exhaust
11.21. To bring the piston at TDC of Compression stroke from TDC of exhaust stroke
…………. revolution of flywheel is made.
a) ½
b) One
c) Two
d) None
11.22. From delivery pipe of FIP, fuel starts coming when corresponding piston is at
TDC of ……..stroke
a) Suction
b) Compression
c) Power
d) Exhaust
11.23. Cummins injector is actuated at the end of ….............
a) Suction stroke
b) Compression
c) Power
d) Exhaust.
11.24. Engine should be rotated in the …………….. of rotation
a) Direction
b) Opposite Direction
c) Both a & b d) None
11.25. To get next cylinder in the position of valve clearance adjustment according to
firing order, the engine needs to be rotated by……………
a) 1800/n
b) 3600/n
c) 7200/n
d) None
11.26. A 6 cylinder engine needs to be rotated by …… to get next cylinder for valve
adjustment according to firing order.
a) 900
b) 1200
c) 1800
d) 3600
11.27. A 12 cylinder engine needs to be rotated by …………….. to get next cylinder
for valve adjustment according to firing order
a) 900
b) 600
c) 1200
d) 1800
11.28. Inlet valve clearance of Cummins engines are ………..
a) 0.2mm
b) 0.3mm
c) 0.014”
d) 0.027”
11.29. Exhaust valve clearance of Cummins engines are…….
a) 0.2 mm
b) 0.3 mm
c) 0.014”
d) 0.027”
11.30. Inlet valve clearance on MWM engine is ……………...
a) 0.2 mm
b) 0.3 mm
c) 0.014”
d) 0.027”
11.31. Exhaust valve clearance on MWM engine is ……….....
a) 0.2 mm
b) 0.3 mm
c) 0.014”
d) 0.027”
11.32. Inlet valve clearance on BCM Deutz engine is ……......
a) 0.2 mm
b) 0.3 mm
c) 0.15 mm
d) 0.027”
11.33. Exhaust valve clearance on BCM Deutz engine is……..
a) 0.2 mm
b) 0.3 mm
c) 0.15 mm
d) 0.27”
11.34. Inlet valve clearance on PQRS HA 694 engine is……..
a) 0.2 mm
b) 0.3 mm
c) 0.15 mm
d) 0.027”
11.35. Exhaust valve clearance on PQRS HA 694 engine is.…....
a) 0.2mm
b) 0.3mm
c) 0.15 mm
d) 0.027”
11.36. Rocker lever of exhaust valve aligns with ........... manifold.
a) Exhaust
b) Inlet
c) Both a & b
d) None
11.37. Rocker lever of inlet valve aligns with ........ manifold.
a) Exhaust
b) Inlet
c) Both a & b
d) None
Adjustment of injection timing and testing of nozzles
11.38. ‘INJ’ mark on flywheel …………. the TDC mark on flywheela) Leads
b) Legs
c) Any of a or b
d) None
11.39. In injection timing adjustment 1 No. plunger pump is matched with ……
cylinder-piston.
a) 1 No.
b) 2 No.
c) 3 No.
d) 5 No.
11.40. ‘Spill cut off’ is used in ……… adjustment.
a) Injection lining
b) Valve clearance
c) Both a & b
d) None
11.41. Idle adjustment stop screw is provided on ………….
a) Feed Pump
b) Injector
c) FIP
d) Filter.
11.42. For injection timing adjustment ……. No. cylinder is brought at TDC of
compression stroke.
a) 1
b) 2
c) 3
d) 5
11.43. FIP coupling is tightened with engine coupling when one no. plunger … lifting.
a) Starts
b) End
c) is at mid of
d) None
11.44. During fine adjustment of injection timing control rack is kept in … position.
a) Zero
b) Full
c) Mid
d) None
11.45. If injection pressure is less, then adjusting screw of injector is ……
a) Tightened
b) Loosened
c) Any of a or b
d) None
11.46. If injection pressure is more, then adjusting screw of injector is …………
a) Tightened
b) Loosened
c) Any of a or b
d) None
11.47. In leak off test of injector a pressure of …… bar is built up.
a) 180bar
b) 150bar
c) 28 bar
d) 1 bar
11.48. In leak off test pressure is maintained for ……… seconds.
a) 1
b) 5
c) 10
d) Nothing specific
11.49. In spray test spray should be ……………
a) Fully atomized
b) Splitted drops
c) Current of fuel d) None
Inspection of Crankshaft
11.50. In alignment check of crankshaft, run out on intermediate journals should not
be more than ………….
a) 0.001”
b) 0.027”
c) 0.002”
d) 0.014”
11.51. In roughness check of crank shaft ……… piece is rubbed on surface.
a) Copper
b) Aluminium
c) Bronze
d) White m
c) Bluish
d) None
11.52. ……….. colour indicates overheating.
a) Red
b) Brown
11.53. Gradually increasing/decreasing readings on intermediate journals indicates
………
a) Bow
b) Twist
c) Unbalance
d) None
11.54. If a pair of crankpins on TDC falls to BDC after pushing it indicates static
………
(a) Balance
(b) Un-balanced
c) Any of a or b
d) None
11.55. If journals and pins are tapered or out of round more than ……., they should be
reground.
a) 0.001”
b) 0.003”
c) 0.014”
d) 0.002”
Trouble Shooting of Cummins Engines
11.56. Shutdown mechanism provided on engine stop ……….
a) Air supply
b) Fuel supply
c) Coolant flow
d) Exhaust flow
11.57. Governor provided on engine regulates …………
a) Air supply
b) Fuel supply
c) Coolant flow
d) Exhaust flow
11.58. Cranking speed for self starting the engine is ………..
a) 50-100 RPM
b) 100-150 RPM c) 100-200 RPM
d) 1000 RPM
11.59. Thermostat checking temperature is ………….
a) 71°C
b) 74°C
c) 85°C
d) 88°C
11.60. Poor compression is got remedied by …………….
(a) Top overhaul
(b) Air Filter Cleaning
(c) Valve setting
(d) Compressor overhauling
Troubleshooting of Deutz and MWM Engine
11.61. Fuel pre-filter in Deutz BF 12L 513C engine is fitted …….. fuel feed pump.
a) After
b) Before
c) Both a & b
d) None
11.62. Fins of cylinders are cleaned during monthly schedule by ……….
a) Air Jet
b) Water Jet
c) Detergent
d) Chemical
Setting of Torque Wrenches, Tightening Torque of different engine assemblies,
Clearance of moving parts
11.63. What is the S.I. unit of torque marked on torque wrench?
a) N-m
b) Kg-m
c) ft-lb
d) None
11.64. What is the M.K.S. unit of torque marked on torque wrench?
a) N-m
b) Kg-m
c) ft-lb
d) None
11.65. What is the F. P. S. unit of torque marked on torque wrench?
a) N-m
b) Kg-m
c) ft-lb
d) None
11.66. Cylinder head of KTA 1150 L engine is tightened by giving torque in … steps.
a) 2
b) 3
c) 4
d) 6
11.67. For KTA 1150 L engine, torque value for cylinder head cap lubricated cap
screw (Black) is ……. ft lbs.
a) 250-260
b) 350-370
c) 339-353
d) 475-502
11.68. In KTA 1150 L engine, flywheel mounting torque New max. is …..
a) 100 ft-lbs
b) 200 ft-lbs
c) 120ft-lbs
d) 220 ft-lbs
11.69. In KTA 1150 L engine, flywheel housing mounting torque New max. is …
(a) 70 ft-lbs
(b) 80 ft-lbs
(c) 140 ft-lbs
(d) 160 ft-lbs
11.70. In KTA 1150 L engine, vibration damper alignment mark is permitted up to ….
a) ± 1/16”
b) ± 1/8”
c) ± 1/4”
d) ± 1/2”
11.71. In Deutz BF 12L 513C engine, torque of Rocker cover is ……
a) 8.5N-m
b) 21N-m
c) 30N-m
d) 50N-m
11.72. In Deutz BF 12L 513C engine, Rocker arm setscrew torque is ….
a) 8.5N-m
b) 21N-m
c) 30N-m
d) 50N-m
11.73. In Deutz BF 12L 513C engine, injector mounting torque is ……….
a) 8.5N-m
b) 21N-m
c) 30N-m
d) 50N-m
11.74. In MWM TBD 232 V12 engine, cylinder head bolt torque is ……….
a) 21N-m
b) 26N-m
c) 8N-m
d) 28N-m
11.75. In MWM TBD 232 V12 engine, flywheel bolt torque is ……….
a) 21N-m
b) 26N-m
c) 8N-m
d) 28N-m
11.76. In MWM TBD 232 V12 engine, main bearing bolt torque is …….
a) 21N-m
b) 26N-m
c) 8N-m
d) 28N-m
11.77. Crankshaft end clearance worn-limit of KTA 1150 L engine is …….
a) 0.007”
b) 0.017”
c) 0.022”
d) None
11.78. In MWM TBD 232 V12 engine, crankshaft end float is …….
a) 0.1-0.26mm
b) 0.05-0.030mm c) 0.1-0.2mm
d) None
11.79. In MWM TBD 232 V12 engine, crankshaft run out maxm is …….
a) 0.05mm
b) 0.30mm
c) 0.10mm
d) 0.03mm
Chapter: Maintenance Steps of Diesel Engine
Question Answer Question Answer Question Answer Question Answer
11.01
b
11.21
b
11.41
c
11.61
b
11.02
a
11.22
b
11.42
a
11.62
b
11.03
c
11.23
b
11.43
a
11.63
a
11.04
c
11.24
a
11.44
b
11.64
b
11.05
b
11.25
c
11.45
a
11.65
c
11.06
a
11.26
b
11.46
b
11.66
c
11.07
b
11.27
b
11.47
b
11.67
b
11.08
a
11.28
c
11.48
c
11.68
d
11.09
b
11.29
d
11.49
a
11.69
d
11.10
a
11.30
a
11.50
c
11.70
a
11.11
b
11.31
a
11.51
a
11.71
a
11.12
a
11.32
a
11.52
c
11.72
b
11.13
b
11.33
b
11.53
a
11.73
c
11.14
a
11.34
c
11.54
b
11.74
a
11.15
b
11.35
c
11.55
b
11.75
b
11.16
b
11.36
a
11.56
b
11.76
d
11.17
a
11.37
b
11.57
b
11.77
c
11.18
b
11.38
a
11.58
c
11.78
a
11.19
b
11.39
a
11.59
c
11.79
11.20
d
11.40
a
11.60
a
11.80