INTERNAL COMBUSTION ENGINES QUIZ

High intensity of knock causes crankshaft vibration and the engine runs rough

Excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls

None of these

Increase in the rate of heat transfer, there is a reduction in the power output and efficiency of the engine

None of these

Temperature

Volume

Density

40 to 60%

75 to 90%

60 to 70%

30 to 40%

Mechanical efficiency

Overall efficiency

Volumetric efficiency

Indicated thermal efficiency

Laminar

Both (A) and (B)

Homogeneous

Heterogeneous

40% alpha methyl naphthalene and 60% cetane

40% cetane and 60% alpha methyl naphthalene

40% diesel and 60% petrol

40% petrol and 60% diesel

Instantaneous pressure at any instant

Minimum pressure

Average pressure

Maximum pressure developed

Petrol only

Air only

None of these

A mixture of petrol and air

Design of crankshaft

Number of cylinders

Arrangement of the cylinders

All of these

V₁ / (V₀ + V₁)

2V₁ / (V₀ + V₁)

2V₀ / (V₀ + V₁)

V₀ / (V₀ + V₁)