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) 1 - rγ - 1 None of these 1 + rγ - 1 1 - (1/rγ - 1) 1 - rγ - 1 None of these 1 + rγ - 1 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the percentage increase in efficiency will be 0.04 0.08 0.14 0.02 0.04 0.08 0.14 0.02 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The ignition of the charge by some hot surface within the engine before the passage of spark is called Pre-ignition Auto-ignition Detonation Ignition delay Pre-ignition Auto-ignition Detonation Ignition delay ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The mean effective pressure obtained from engine indicator indicates the Minimum pressure Instantaneous pressure at any instant Average pressure Maximum pressure developed Minimum pressure Instantaneous pressure at any instant Average pressure Maximum pressure developed ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Polymerization is a chemical process in which molecules of a compound become Liquid Larger Slowed down Smaller Liquid Larger Slowed down Smaller ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Which one of the following engines will have heavier flywheel than the remaining ones? 30 kW two-stroke petrol engine running at 1500 r.p.m. 30 kW four-stroke petrol engine running at 1500 r.p.m. 30 kW four-stroke diesel engine running at 750 r.p.m. 30 kW two-stroke diesel engine running at 750 r.p.m. 30 kW two-stroke petrol engine running at 1500 r.p.m. 30 kW four-stroke petrol engine running at 1500 r.p.m. 30 kW four-stroke diesel engine running at 750 r.p.m. 30 kW two-stroke diesel engine running at 750 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
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