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Internal Combustion Engines

Internal Combustion Engines
The probability of knocking in diesel engines is increased by

Low volatility
Higher viscosity
All of these
High self ignition temperature

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Internal Combustion Engines
The following volume of air is required for consuming 1 liter of fuel by a four stroke engine

910 m3
56 m3
5 m3
1 m3

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Internal Combustion Engines
The magneto in an automobile is basically

Capacitor
D.C. generator
Magnetic circuit
Transformer

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Internal Combustion Engines
The maximum propulsive efficiency of a turbojet engine is at a speed of

1000 km/h
2400 km/h
3000 km/h
2000 km/h

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Internal Combustion Engines
The specific fuel consumption per B.P. hour for a petrol engine is about

0.25 kg
0.2 kg
0.3 kg
0.35 kg

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Internal Combustion Engines
The mechanical efficiency (ηm) of the engine is given by

ηm = B.P/I.P
ηm = (B.P × I.P)/100
ηm = I.P/B.P
None of these

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