After cooler is used to
A.Cool the air
B.Reduce the volume of air
C.To cause moisture and oil vapour to drop out
D.Remove impurities from air
E.None of the above
Category: Mechanical Engineering Mcqs
In a centrifugal pump installation while starting, the position of delivery valve is
A.Fully open
B.Fully closed
C.Half open
D.More than half open
E.Less than half open
The limiting force of fiction is
A.The value of friction force which stops the movement of the body
B.The value of friction force which cannot exceed under a situation
C.The friction force acting when the body is just about to move
D.The friction force acting on a body when it is in motion
E.Double of the normal friction
287 J/kg/?k is the value of
A.Gas constant in MKS units
B.Gas constant in S.I. units
C.Universal gas constant in MKS units
D.Universal gas constant in S.I. units
E.None of the above
The pressure of steam in a steam locomotive system is
A.10 to 15 kg/cm2
B.20 to 30 kg/cm2
C.70 to 90 kg/cm2
D.115 to 125 kg/cm2
Kink’ in a steel wire rope is produced
A.when some strands are broken
B.when the rope looses its springing action
C.when a rope with a loop or twist in its length is pulled tight
D.when the rope is permanently elongated due to overloading
Gas turbines are widely used in
A.Power generation
B.Locomotive
C.Ship
D.Aircraft
E.Pumping stations
Brackish taste of water is due to
A.Chlorides of sodium
B.Fluorides of sodium
C.Turbidity
D.Dead bacteria
E.Any of the above
Which one of the following is a wrong staement?
A.Scavenging is the process of removing the burnt gas from the engine cylinder by fresh charge coming into cylinder from the crank-case
B.The power developed in four stroke I.S. engine, for the same engine speed and cylinder volume, as compared to that of a two stroke engine is one-half
C.Instead of values, ports are used in case of two-stroke I.C. engines
D.In case of four stroke I.C. engines, the exhaust gases are driven out from engine cylinder by fresh charge of the fuel entering the cylinder
