Category: I.C. Engines

A. lean mixture
B. theoretically correct mixture
C. rich mixture
D. any type of mixture
E. lean/rich mixture depending upon capacity of engine

A. increase the knocking tendency
B. decrease the knocking tendency
C. not affect the knocking tendncy
D. increase or decrease knocking tendency depending on strenght and time of spark
E. unpredictable

A. 2-stroke cycle engines
B. 4-stroke cycle engines
C. aeroplane engines
D. diesel engines
E. high efficiency engines

A. 80°C
B. 120°C
C. 180°C
D. 240°C
E. 320°C

A. fuelinjection starts at 10° before to dead center and ends at 20° after tor dead center
B. fuel injection starts at top dead center and ends at 20° after top dead center
C. fuel injection starts at just before top dead center and ends just after top deac center
D. may start and end anywhere
E. none of the above

A. higher knocking will occur
B. efficiency will be low
C. low power will be produced
D. black smoke will be produced
E. lot of fuel will remain unburnt

A. Unaltered
B. Increased
C. Decreased
D. Advanced

A. clearance volume
B. swept volume
C. compression ratio
D. volumetric efficiency
E. mean effective pressure

A. 0°C
B. – 10°C
C. 10°C
D. less than – 30°C
E. less than – 273°C

A. increase efficiency
B. increase power
C. reduce weight and bulk for a given out-put
D. effect fuel economy
E. none of the above