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Internal Combustion Engines

Internal Combustion Engines
The thermal efficiency of diesel engines on weak mixtures is

Dependent on other factors
Higher
Lower
Unaffected

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Internal Combustion Engines
The specific fuel consumption per BH hour for a petrol engine is approximately

0.3 kg
0.25 kg
0.2 kg
0.15 kg

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Internal Combustion Engines
The basic requirement of a good combustion chamber is

High thermal efficiency and power output
Low compression ratio
Minimum turbulence
Low volumetric efficiency

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Internal Combustion Engines
The magneto in an automobile is basically

D.C. generator
Capacitor
Magnetic circuit
Transformer

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Internal Combustion Engines
By higher octane number of spark ignition fuel, it is meant that the fuel has

Higher heating value
Lower volatility
Higher flash point
Longer ignition delay

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Internal Combustion Engines
As a result of detonation in an I.C. engine, following parameter attains very high value

Rate of rise of pressure
Peak temperature
Rate of rise of temperature
Peak pressure

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MORE MCQ ON Internal Combustion Engines

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