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Internal Combustion Engines

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

Turbulent
Steady
Streamline
Unsteady

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Internal Combustion Engines
In order to eliminate knocking in compression ignition engines, there should be

Late auto-ignition
Short delay period
High self ignition temperature of fuel
Low compression ratio

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Internal Combustion Engines
Number of working strokes per min. for a two stroke cycle engine is ____ the speed of the engine in r.p.m.

One-half
Twice
Four-times
Equal to

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Internal Combustion Engines
A diesel engine as compared to petrol engine (both running and rated load) is

Less efficient
Other factors will decide it
Equally efficient
More efficient

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Internal Combustion Engines
It the temperature of intake air in IC engines is lowered, then its efficiency will

Increase up to certain limit and then decrease
Increase
Decrease
Remain same

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Internal Combustion Engines
The ratio of the brake power to the indicated power is called

Indicated thermal efficiency
Overall efficiency
Mechanical efficiency
Volumetric efficiency

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