Internal Combustion Engines (I.C. Engines) MCQ Questions & Answers | Mechanical Engineering

A. Mechanical efficiency

B. Overall efficiency

C. Volumetric efficiency

D. Relative efficiency

A. Minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame

B. Temperature at which it solidifies or congeals

C. It catches fire without external aid

D. Indicated by 90% distillation temperature, i.e., when 90% of sample oil has distilled off

A. Up to 35%

B. Up to 50%

C. Up to 75%

D. Up to 100%

A. Supercharging

B. Carburetion

C. Turbulence

D. Delay period

A. Scavenging

B. Detonation

C. Supercharging

D. Polymerisation

A. Scavenging

B. Turbulence

C. Supercharging

D. Pre-ignition

A. Instantaneous and rapid burning of the first part of the charge

B. Instantaneous auto ignition of last part of charge

C. Delayed burning of the first part of the charge

D. Reduction of delay period

A. Speed

B. Temperature

C. Volume of cylinder

D. m.e.p. and I.H.P.

A. Single cylinder petrol engine

B. Four stroke engine

C. Single cylinder diesel engine

D. Multi cylinder engine

A. Temperature and pressure in the cylinder at the time of injection

B. Nature of the fuel mixture strength

C. Relative velocity between the fuel injection and air turbulence pressure of residual gases

D. All of the above