The efficiency of an oil bath type air cleaner is usually
A.50%
B.60%
C.80%
D.90%
E.99%
Category: Automobile Engineering Mcqs
The time before actual fuel injection and pump olunger starts to pump fuel, is known as
A.injection lag
B.overlap
C.ignition lag
D.none of the above
A thermostat is provided in automobile engines for
A.Controlling the temperature of the piston
B.Controlling the temperature of the cooling system
C.Regulating the temperature of lubricating oil
D.Regulating the temperature of suction air
E.Regulating the temperature of haust gases.
If the end mixture of S.I. engine is having low temperature and long igition delay, then knocking will
A.accelerate
B.decrease
C.remain constant
D.none of the above
If brake wheels get locked before the vehicle stops, the vehicle is said to be
A.Slipping
B.Rubbing
C.Sliding
D.Rolling
E.Skidding
Diesel engines are also known as
A.S.I. engines
B.C.I. engines
C.Steam engines
D.none of the above
The device which is used for atomising and vapourising the petrol fuel and mixing it with the air in varying proportions, to suit the changing operating conditions of the engine, is known as
A.injector
B.Spark plug
C.carburettor
D.none of the above
The phenomenon by which a fuel catches fire without external flame is known as
A.pre-ignition
B.detonation
C.ignition lag
D.auto-ignition
In order to easily start the precombustion chamber diesel engine, in the early cold morning
A.Spark plug is used
B.Injector is used
C.Glow plug is used
D.Petrol is poured through inlet manifold
E.None of the above
The function of Diesel feed pump (when ever provided) is to
A.Pump the fuel from the injection pump to the injector
B.Pump the fuel from the tank into the injection pump
C.Pump the oil into the main gallery
D.Send back the fuel from the injector into the tank
E.Pump the fuel to the injector
