Air injection in case of S.I. engine refers to injection of
A.Air only
B.Air and fuel mixture
C.Liquid fuel only
D.Super charging
E.Doesn’t exist
Category: Automobile Engineering Mcqs
If a lead acid battery is fully charged at specific gravity of 1.28 and fully discharged at specific gravity of 1.11 then at specific gravity of 1.19, the battery will be
A.nearly fully charged
B.more than 50% charged
C.50% charged
D.less than 50% charged
In a Diesel engine the function of a fuel injector is
A.To mix fuel and air
B.To ignite air-fuel mixture
C.To provide flame front for ignition
D.To spray atomized fuel in the cylinder
E.To provide adequate air fuel mixture for combustion
Oil pan is attached
A.To the bottom of the cylinder block
B.In a separate unit away from the crankcase
C.At the top of the cylinder block
D.At the outside wall of the crank case
E.Adjacent to oil filters
Noisy brakes indicate
A.Grit on lining
B.Drums scored
C.Loose lining screws
D.Distored brake spiders
E.Any of the above
In a Diesel engine, during combustion the pressure may increase at a range of
A.10-15 atm
B.15-20 atm
C.20-30 atm
D.55-75 atm
E.Depends on engine size and speed
Water in lubricating oil aids in
A.Decomposition
B.Oxidation
C.Formation of solution
D.Dilution
E.Burning
Excess oil consumption in engine may be due to
A.Leakage of oil through oil pan gasket
B.Poor quality or improper viscosity of engine oil
C.Excessive oil pressure
D.Badly worn piston rings
E.Any of the above
Engine oil is usually renewed after
A.24 km
B.100 km
C.500 km
D.100 km
E.2500 – 6000 km
Exhaust gas leakage into the cooling system is most likely to be due to a defective
A.Cylinder head gasket
B.Manifold gasket
C.Water pump
D.Radiator
E.Any of the above
