Internal Combustion Engines The thermal efficiency of petrol and gas engines is about 0.5 0.7 0.15 0.3 0.5 0.7 0.15 0.3 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knocking in spark ignition engines can be reduced by Both (A) and (B) Retarding the spark None of these Increasing the engine speed Both (A) and (B) Retarding the spark None of these Increasing the engine speed ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Iso-octane (C₈H₁₈) has octane number of 120 50 0 100 120 50 0 100 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Number of working strokes per min. for a four stroke cycle engine are _________ the speed of the engine in r.p.m. Twice Four-times Equal to One-half Twice Four-times Equal to One-half ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The normal heptane (C₇H₁₆) is given a rating of ________ octane number. 120 50 100 0 120 50 100 0 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines If the compression ratio in I.C. engine increases, then its thermal efficiency will Increase None of these Remain same Decrease Increase None of these Remain same Decrease ANSWER DOWNLOAD EXAMIANS APP
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