Internal Combustion Engines The fuel valve in a four stroke cycle diesel engine May open and close anywhere Opens at 15° after top dead center and closes at 20° before bottom dead center 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 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 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knocking in diesel engines may be prevented by All of these Increasing the inlet pressure of air Reducing the delay period Raising the compression ratio All of these Increasing the inlet pressure of air Reducing the delay period Raising the compression ratio ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The operation of forcing additional air under pressure in the engine cylinder is known as Pre-ignition Scavenging Supercharging Turbulence Pre-ignition Scavenging Supercharging Turbulence ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In a cycle, the spark lasts roughly for 1 sec 0.01 sec 0.001 sec 0.1 sec 1 sec 0.01 sec 0.001 sec 0.1 sec ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The brake power (B.P.) of the engine is given by (where W = Brake load or dead load in newtons, l = Length of arm in meters, N = Speed of engine in r.p.m., S = Spring balance reading in newtons, D = Dia. of brake drum in meters, and d = Dia. of rope in meters) P = [(W - S) πDN]/60 watts All of these P = (Wl × 2πN)/60 watts P = [(W - S) π (D + d) N]/60 watts P = [(W - S) πDN]/60 watts All of these P = (Wl × 2πN)/60 watts P = [(W - S) π (D + d) N]/60 watts ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The method of determination of indicated power of a multi cylinder spark ignition engine is by the use of Prony brake test Morse test Motoring test Heat balance test Prony brake test Morse test Motoring test Heat balance test ANSWER DOWNLOAD EXAMIANS APP
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