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Internal Combustion Engines

Internal Combustion Engines
The maximum temperature in the I.C. engine cylinder is of the order of

500-1000°C
1500-2000°C
2000-2500°C
1000-1500°C

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Internal Combustion Engines
If the intake air temperature of I.C. engine increases, its efficiency will

Decrease
Increase
None of these
Remain same

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Internal Combustion Engines
Number of working strokes per min. for a two stroke cycle engine is ____ the speed of the engine in r.p.m.

Four-times
One-half
Twice
Equal to

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Internal Combustion Engines
The voltage required to produce a spark across the gap, between the sparking points is

6000 to 10,000 volts
10,000 to 12,000 volts
4000 to 6000 volts
2000 to 4000 volts

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Internal Combustion Engines
The object of supercharging the engine is

All of these
To reduce mass of the engine per brake power
To reduce space occupied by the engine
To increase the power output of an engine when greater power is required

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Internal Combustion Engines
The higher combustion chamber wall temperature in compression ignition engines will _________ knocking tendency.

Reduce
None of these
Increase
Not effect

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