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Internal Combustion Engines

Internal Combustion Engines
Engine pistons are usually made of aluminium alloy because it

Is lighter
Is stronger
Absorbs shocks
Wear is less

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Internal Combustion Engines
The sensing element in the control system of nuclear reactors measures the _________ of the neutron flux in the reactor.

Density
None of these
Volume
Temperature

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Internal Combustion Engines
The thermal efficiency of a petrol engine is _________ as compared to diesel engine.

More
Same
Less
None of these

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Internal Combustion Engines
The knocking tendency in compression ignition engines for a given fuel will be

Enhanced by increasing compression ratio
None of these
Enhanced by decreasing compression ratio
Dependent on other factors

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Internal Combustion Engines
Number of working strokes per min. for a four stroke cycle engine are _________ the speed of the engine in r.p.m.

Twice
One-half
Equal to
Four-times

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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 temperature
Peak temperature
Peak pressure
Rate of rise of pressure

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