Pour point of a fluid
A.relates to a considerable increase of viscosity with decrease in temperature
B.refers to the change of phase from liquid to solid
C.refers to sudden discontinuity in fluid properties
D.none of the above
Category: Mechanical Engineering Mcqs
The secondary critical speed of a shaft occurs at
A.Half the primary critical speed
B.Twice the primary critical speed
C.Four times the primary critical speed
D.Occurs only when there are more than 2 rotors on a shaft
E.If the externam exciting system has a frequency other than the primary critical speed
A 660 V cable is known as
A.Low tension cable
B.High tension cable
C.Super tension cable
D.Extra high tension cable
E.Extra super voltage cable
Thermie
A.Is a unit of temperature measurement
B.Is a unit of latent heat measurement
C.Is thermal conductivity of materials
D.Is quantity of heat required to raise temperature of one tonne of water from 14.5?C to 15.5?C
E.Is the temperature change in water when 1000 calories of heat are added to 1 gm of water, gradually
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
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
