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

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

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Internal Combustion Engines
The fuel valve in a four stroke cycle diesel engine

Opens at top dead center and closes at bottom dead center
Opens at 15° before top dead center and closes at 20° after top dead center
May open and close anywhere
Opens at 15° after top dead center and closes at 20° before bottom dead center

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