Internal Combustion Engines
The brake power of a diesel engine, keeping other parameters constant, can be increased by

Decreasing the pressure of intake air
Increasing the temperature of intake air
Increasing the pressure of intake air
Decreasing the density of intake air

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Internal Combustion Engines
Which one of the following engines will have heavier flywheel than the remaining ones?

30 kW four-stroke diesel engine running at 750 r.p.m.
30 kW two-stroke diesel engine running at 750 r.p.m.
30 kW four-stroke petrol engine running at 1500 r.p.m.
30 kW two-stroke petrol engine running at 1500 r.p.m.

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