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
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
Two stroke engine compared to a four stroke engine has
A Higher efficiency
B Less fuel consumption
C Higher power to weight ratio
D Lower initial cost
Number of working strokes per min. for a four stroke cycle engine are _________ the speed of the engine in r.p.m.
A Equal to
B One-half
C Twice
D Four-times
Number of working strokes per min. for a two stroke cycle engine is _________ the speed of the engine in r.p.m.
A Equal to
B One-half
C Twice
D Four-times
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%
The thermal efficiency of a petrol engine is _________ as compared to diesel engine.
A Same
B Less
C More
D None of these
When the primary direct crank of a reciprocating engine makes an angle of $$\theta $$ with the line of stroke, then the secondary direct crank will make an angle of _________ with the line of stroke.
A $$\frac{\theta }{2}$$
B $$\theta $$
C $$2\theta $$
D $$4\theta $$

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