In a four stroke cycle diesel engine, the compression

A Starts at 40° after bottom dead center and ends at 10° before top dead center
B Starts at 40° before top dead center and ends at 40° after top dead center
C Starts at top dead center and ends at 40° before bottom dead center
D May start and end anywhere

Correct Answer: Starts at 40° after bottom dead center and ends at 10° before top dead center

In a four stroke cycle diesel engine, the compression Starts at 40° after bottom dead center and ends at 10° before 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 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
In a four stroke I.C. engine, the turning moment during the compression stroke is
A positive throughout
B negative throughout
C positive during major portion of the stroke
D negative during major portion of the stroke
Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle
A Heat rejection is lower
B Expansion and compression are isentropic
C Combustion is at constant volume
D Maximum temperature is higher
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%
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
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
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

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