Internal Combustion Engines
Morse test is used to determine the I.P. of a

Multi cylinder engine
Single cylinder petrol engine
Four stroke engine
Single cylinder diesel engine

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Internal Combustion Engines
Detonation is harmful due to

Increase in the rate of heat transfer, there is a reduction in the power output and efficiency of the engine
High intensity of knock causes crankshaft vibration and the engine runs rough
None of these
Excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls

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