Internal Combustion Engines The basic requirement of a good combustion chamber is Low volumetric efficiency High thermal efficiency and power output Minimum turbulence Low compression ratio Low volumetric efficiency High thermal efficiency and power output Minimum turbulence Low compression ratio ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The brake power of a diesel engine, keeping other parameters constant, can be increased by Increasing the temperature of intake air Decreasing the density of intake air Increasing the pressure of intake air Decreasing the pressure of intake air Increasing the temperature of intake air Decreasing the density of intake air Increasing the pressure of intake air Decreasing the pressure of intake air ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The thermal efficiency of a standard Otto cycle for a compression ratio of 5.5 will be 0.5 0.25 0.7 1 0.5 0.25 0.7 1 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged? No To some extent Unpredictable Yes No To some extent Unpredictable Yes ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The increase of efficiency of a compression ignition engine, as the load decreases, is due to Hit and miss governing Higher maximum temperature Quantitative governing Qualitative governing Hit and miss governing Higher maximum temperature Quantitative governing Qualitative governing 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
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