At the first sight a petrol engine is identified by
A.Cylinder size
B.Power output
C.Operating speed
D.Spark plug
E.Size of air cleaner
Category: Mechanical Engineering Mcqs
One poise is equivalent to
A.360 kg/m-hr
B.1 dyne sec/cm2
C.1/98.1 kgf sec/m2
D.10-1 kg/m-sec
E.Any of the above
The fuel is injected into the cylinder in Diesel engine when the piston is
A.Exactly at T.D.C. after compression stroke
B.Just after T.D.C. during exhaust compression stroke
C.Approaching T.D.C. during compression stroke
D.Approaching T.D.C. during exhaust stroke
Process of making a thin phosphate coating on steel to act as a base or primer for enamels and paints in known as
A.Prepainting
B.Surface preparing
C.Parkerizing
D.Anodising
E.Colourizing
In a typical medium speed 4-stroke cycle diesel engine, the inlet value
A.Opens at 20? before TDC and closes at 35? after BDC
B.Opens at TDC and closes at BDC
C.Opens at 10? after TDC and closes at 20? after BDC
D.Remains open for 200?C
E.None of the above
The difference between two specific heats of a gas is equal to universal constant when
A.1 gm of gas is heated
B.1 gm molecule of gas is heated
C.1 mole of gas is heated
D.any amount of gas is heated
The firing order in case of four cylinder I.C. engine is given as
A.1-2-3-4
B.1-4-3-2
C.1-2-4-3
D.none of the above
For a 66 kV transmission line having span of 200 metres between towers, the approximate sag will be
A.0.02 m
B.0.2 m
C.2 m
D.20 m
In a steam turbine when steam expands, the entropy
A.Increases linearly
B.Decreases linearly
C.Increases exponentially
D.Decreases exponentially
E.Does not change
