INTERNAL COMBUSTION ENGINES QUIZ

Opens at 20° before top dead center and closes at 40° after bottom dead center

Opens at top dead center and closes at bottom dead center

May open or close anywhere

Opens at 20° after top dead center and closes at 20° before bottom dead center

May open and close anywhere

Opens at 30° after bottom dead centre and closes at 10° before top dead centre

Opens at bottom dead centre and closes at top dead centre

Opens at 30° before bottom dead centre and closes at 10° after top dead centre

Alcohol

Benzene

Iso-octane

Normal heptane

Chemically correct air-fuel ratio by volume

Actual air-fuel ratio for maximum efficiency

Chemically correct air-fuel ratio by weight

None of these

Delay period

Period of ignition

Burning period

Pre-ignition period

Qualitative governing

Higher maximum temperature

Quantitative governing

Hit and miss governing

Highly ignitable

Just about the same difficult to ignite

Less difficult to ignite

More difficult to ignite

Formation of hard coating on piston skirts

Oil sludge in the engine crank case

Detonation

Piston ring and cylinder wear

(V₀/V₁)/ [1 + (V₀/V₁)²]

V₁/(V₀ + V₁)

V₀/(V₀ + V₁)

[2(V₀/V₁)]/ [1 + (V₀/V₁)²]