Engineering :: Thermodynamics

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Cut of ratio in a steam engine is the ratio of

[A].	Pressure at cut off to supply pressure	[B].	Pressure at cut off to exhaust pressure
[C].	Pressure at cut off to mean effective pressure	[D].	Fraction of piston stroke which the piston has travelled when cut off occurs
[E].	Work done by piston after cut off to total work done per cylinder

Answer: Option D