Internal Combustion Engines Pre-ignition is caused by the spontaneous combustion of the mixture before the end of the compression stroke, and is due to Overheated spark plug points Red hot carbon deposits on cylinder walls Cylinder walls being too hot Any one of the listed here Overheated spark plug points Red hot carbon deposits on cylinder walls Cylinder walls being too hot Any one of the listed here ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Alpha-methyl-naphthalene (C₁₁ H₁₀) has a cetane number of 50 100 0 120 50 100 0 120 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The air standard efficiency of an I.C. engine is given by (where r = Compression ratio, and γ = Ratio of specific heats) 1 - (1/rγ - 1) None of these 1 - rγ - 1 1 + rγ - 1 1 - (1/rγ - 1) None of these 1 - rγ - 1 1 + rγ - 1 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The working pressure and temperature inside the cylinder of an internal combustion engine is _________ as compared to a steam engine. Very low Low High Very high Very low Low High Very high ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The thermal efficiency of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will Increase Be independent Decrease May increase or decrease depending on other factors Increase Be independent Decrease May increase or decrease depending on other factors ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of 75% diesel and 25% petrol 75% iso-octane and 25% normal heptane 75% petrol and 25% diesel 75% normal heptane and 25% iso-octane 75% diesel and 25% petrol 75% iso-octane and 25% normal heptane 75% petrol and 25% diesel 75% normal heptane and 25% iso-octane ANSWER DOWNLOAD EXAMIANS APP
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