Internal Combustion Engines The reference fuels for knock rating of spark ignition engines would include Normal heptane and iso-octane Iso-octane and alpha-methyl naphthalene Normal octane and aniline Iso-octane and normal hexane Normal heptane and iso-octane Iso-octane and alpha-methyl naphthalene Normal octane and aniline Iso-octane and normal hexane 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 = (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 P = [(W - S) πDN]/60 watts All of these ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Air fuel ratio at which a petrol engine cannot work is 0.62569444444444 0.41736111111111 0.33402777777778 20 : 1 and less 0.62569444444444 0.41736111111111 0.33402777777778 20 : 1 and less ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In a four stroke cycle petrol engine, the charge is ignited at 30° before bottom dead center 30° after bottom dead center 30° after top dead center 30° before top dead center 30° before bottom dead center 30° after bottom dead center 30° after top dead center 30° before top dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The pressure at the end of compression, in diesel engines, is approximately 10 bar 20 bar 25 bar 35 bar 10 bar 20 bar 25 bar 35 bar ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The minimum cranking speed in case of petrol engine is about 250 - 300 rpm Half the operating speed 60 - 80 rpm One fourth of operating speed 250 - 300 rpm Half the operating speed 60 - 80 rpm One fourth of operating speed ANSWER DOWNLOAD EXAMIANS APP
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