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Internal Combustion Engines

Internal Combustion Engines
A diesel engine has

3 valves
4 valves
2 valves
1 valve

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Internal Combustion Engines
Supercharging is essential in

Diesel engines
Aircraft engines
Petrol engines
Gas turbines

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Internal Combustion Engines
The inlet value of a four stroke cycle I.C engine remains open for nearly

235°
180°
125°
200°

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Internal Combustion Engines
The brake power is the power available

None of these
At the crank shaft
At the crank pin
In the engine cylinder

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Internal Combustion Engines
The normal heptane (C₇H₁₆) is given a rating of ________ octane number.

0
100
50
120

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Internal Combustion Engines
If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the percentage increase in efficiency will be

0.14
0.02
0.04
0.08

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