The exhaust valve in a four stroke cycle petrol engine

A Opens at 50° before bottom dead center and closes at 15° after top dead center
B Opens at bottom dead center and closes at top dead center
C Opens at 50° after bottom dead center and closes at 15° before top dead center
D May open and close anywhere

Correct Answer: Opens at 50° before bottom dead center and closes at 15° after top dead center

The exhaust valve in a four stroke cycle petrol engine Opens at 50° before bottom dead center and closes at 15° after top dead center
Bissoy MCQ
#Mechanical Engineering #Internal Combustion Engines (I.C. Engines)

Related Questions

An empty fuel tank of a car was filled with A type petrol. When the tank was half-empty, it was filled with B type petrol. Again when the tank was half-empty, it was filled with A type petrol. When the tank was half-empty again, it was filled with B type petrol. What is the percentage of A type petrol at present in the tank?
A 33.5%
B 37.5%
C 40%
D 50%
An empty fuel tank of a car was filled with A type petrol. When the tank was half-empty, it was filled with B type petrol. Again when the tank was half-empty, it was filled with A type petrol. When the tank was half-empty again, it was filled with B type petrol. What is the percentage of A type petrol at present in the tank ?
A 33.5%
B 37.5%
C 40%
D 50%
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
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
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 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
In a four stroke cycle petrol engine, the inlet valve
A Opens at top dead center and closes at bottom dead center
B Opens at 20° before top dead center and closes at 40° after bottom dead center
C Opens at 20° after top dead center and closes at 20° before bottom dead center
D May open or close anywhere
The size of inlet valve of an engine in comparison to exhaust valve is
A More
B Less
C Same
D More/less depending on capacity of engine
In a four stroke cycle petrol engine, the charge is ignited at
A 30° before top dead center
B 30° after top dead center
C 30° before bottom dead center
D 30° after bottom dead center

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