MECHANIC DIESEL

MECHANIC DIESEL MULTIPLE CHOICE QUESTIONS (MCQ)

1. Morse test can be conducted
for  ........
(a) Petrol engines
b) Diesel engines
c) Multi cylinder engines
d) All of these
Answer:- c) Multi cylinder engines
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2. Which of the following is a unit
 of pressure?
a) Kg/cm²
b) gama
c) Pie
d) Newton
Answer:- a) Kg/cm²

3. During the suction stroke of a
diesel engine ........
a) Petrol injected
b) Diesel injected
c) Diesel and air supplied
d) Only air supplied
Answer:- d) Only air supplied
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4. In an automobile engine,
the temperature of piston will
be more at the ................
a) Piston pin
b) Skirt of piston
c) Crown of piston
d) Piston rings
Answer:- c) Crown of piston


5. In the compression stroke
the piston moves from ........
a)T.D.C to B.D.C
b) B.D.C. to T.D.C
c) Below B.D.C.
d) Above T.D.C.
Answer:- b) B.D.C. to T.D.C
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6. Piston slap in a cold engine is
due to ..........
a) Excessive ring gap
b) Excessive piston to bore clearance
c) Less piston working clearance
d) Excessive compression pressure
Answer:- b) Excessive piston to bore clearance

7. Heater plugs are used to warm up.......
a) Fuel pump
b) Feed pump
c) Injector
d) Combustion chamber
Answer:- d) Combustion chamber
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8. In one revolution of a 2-stroke
engine of crank shaft, the inlet
value opens ............
a) 1 Time
b) 2Times
c) 3 Times
d) 4 Times
Answer:- a) 1 Time

9. Piston is made of .................
a) Zinc Alloy
b) Aluminum Alloy
c)Copper Alloy
d) None of these
Answer:- b) Aluminum Alloy
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10. The knocking in the diesel engine occurs due to -
a) Ignition advance
b) Ignition delay
c) Ignition hold
d) None of these
Answer:- b) Ignition delay