MECHANIC DIESEL MULTIPLE CHOICE QUESTIONS (MCQ) 2016 JULY MECHANIC DIESEL THEORY SEMESTER - II JULY2016,
Excessive valve guide wear will
Excessive valve guide wear will
result in ........
a) More oil consumption
b) Engine efficiency is
c) Perfect sealing oil valve
d) Increased valve life
Answer:- a) More oil consumption
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The late opening of engine valve
is termed as .........
a) Lead
a) Lead
b) Leg
c) Throw
d) Bore
Answer:- b) Leg
Internal diameter of cylinder is
called as .......
a) Bore
b).D.S.S.
c) B.D.S.
d) Lead
Answer:- a) Bore
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The pressure inside the cylinder
is .............. the atmospheric pressure
during the exhaust stroke,
a) Equal to
b) Below
a) Equal to
b) Below
c) Above
d) None of these
Answer:- c) Above
The factors affecting knocking an
engine are .......
a) Compression ratio
b) Cold mixture
c) Additives
d) All of these
Answer:- d) All of these
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Which is the type of muffler?
a) Baffle type
b) Resonance type
c) Wave cancellation type
d) All of these
Answer:- d) All of these
Radiators are generally made of ........
a) Brass and copper
b) Iron
c) Silver
d) Aluminum
Answer:- a) Brass and copper
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If the temperature of intake air in
internal combustion engine increases,
then its efficiency will -
a) Remain same
b) Decrease
c) Increase
d) None of these
Answer:- b) Decrease
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The expansion of fuel in a four
stroke cycle diesel engine ............
a) Starts at 15° before top dead center
and ends at 30° after top dead center
b) Starts at top dead center and ends
at 30° after top dead center
c) Starts at 15° after top dead center
and ends at 30° before bottom dead center
d) May start and end anywhere
Answer:- d) May start and end anywhere
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The pressure at the end of compression
in the case of diesel engine is of the
order of .......
a) 6kg/cm²
a) 6kg/cm²
b) 12kg/cm²
c) 20 kg/cm²
c) 20 kg/cm²
d) 35 kg/cm²
Answer:- a) 6kg/cm²
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