Internal Combustion Engines
The spark ignition engines are governed by

Quantitative governing
Qualitative governing
Combination of (B) and (C)
Hit and miss governing

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Internal Combustion Engines
The tangential velocity of the water element having a free vortex is

Directly proportional to its distance from the centre
Directly proportional to its (distance)2 from the centre
Inversely proportional to its (distance)2 from the centre
Inversely proportional to its distance from the centre

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