The fuel valve in a four stroke cycle diesel engine

A Opens at 15° after top dead center and closes at 20° before bottom dead center
B Opens at 15° before top dead center and closes at 20° after top dead center
C Opens at top dead center and closes at bottom dead center
D May open and close anywhere

Correct Answer: Opens at 15° before top dead center and closes at 20° after top dead center

The fuel valve in a four stroke cycle diesel engine Opens at 15° before top dead center and closes at 20° after top dead center
Bissoy MCQ
#Mechanical Engineering #Internal Combustion Engines (I.C. Engines)

Related Questions

A two stroke cycle engine gives ________ the number of power strokes as compared to the four stroke cycle engine, at the same engine speed.
A Half
B Same
C Double
D Four times
Thermal efficiency of a two stroke cycle engine is _________ a four stroke cycle engine.
A Equal to
B Less than
C Greater than
D None of these
Theoretically, a four stroke cycle engine should develop _________ power as that of a two stroke cycle engine.
A Half
B Same
C Double
D Four times
In a four stroke cycle diesel engine, the inlet valve
A Opens at 20° before top dead center and closes at 40° after bottom dead center
B Opens at 20° after top dead center and closes at 20° before bottom dead center
C Opens at top dead center and closes at bottom dead center
D May open and close anywhere
In a four stroke cycle diesel engine, the exhaust valve
A Opens at 30° before bottom dead centre and closes at 10° after top dead centre
B Opens at 30° after bottom dead centre and closes at 10° before top dead centre
C Opens at bottom dead centre and closes at top dead centre
D May open and close anywhere
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
A certain truck uses 18 gallons of diesel fuel in traveling 270 miles. In order for the truck to travel the same distance using 10 gallons of diesel fuel, by how many miles per gallon must the truck's fuel mileage be increased.
A 12
B 15
C 27
D 9
In a four speed four stroke Diesel engine, the intake valve
A Opens at T.D.C. and closes at B.D.C.
B Opens at 20° before T.D.C. and closes at 35° after B.D.C.
C Opens at 10° after T.D.and closes at 20° before B.D.C.
D None of the above
In a four stroke cycle petrol engine, the pressure inside the engine cylinder during the suction stroke is __________ the atmospheric pressure.
A equal to
B below
C above
D middle
The scavenging efficiency of a four stroke cycle diesel engine is
A Below 50%
B Between 50 and 85%
C Between 85 and 95%
D Between 95 and 100%

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