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Internal Combustion Engines

Internal Combustion Engines
A higher compression ratio causes

Pre-ignition
Any one of these
Acceleration in the rate of combustion
Increase in detonation

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Internal Combustion Engines
Alpha-methyl-naphthalene (C₁₁ H₁₀) has a cetane number of

100
0
50
120

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Internal Combustion Engines
The output of a diesel engine can be increased without increasing the engine revolution or size in following way

Scavenging
Feeding more fuel
Supercharging
Heating incoming air

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Internal Combustion Engines
The fuel in diesel engine is normally injected at pressure of

5-10 kg/cm²
20-25 kg/cm²
60-80 kg/cm²
90-130 kg/cm²

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Internal Combustion Engines
A flow in which the quantity of liquid flowing per second is constant, is called __________ flow.

Unsteady
Steady
Turbulent
Streamline

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

None of the listed here
ηm = B.P/I.P
ηm = I.P/B.P
ηm = (B.P × I.P)/100

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