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 + rγ - 1 None of these 1 - (1/rγ - 1) 1 - rγ - 1 1 + rγ - 1 None of these 1 - (1/rγ - 1) 1 - rγ - 1 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The air-fuel ratio in petrol engines is controlled by Governing Injection Controlling valve opening/closing Carburetion Governing Injection Controlling valve opening/closing Carburetion ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines As a result of detonation in an I.C. engine, following parameter attains very high value Rate of rise of temperature Peak temperature Peak pressure Rate of rise of pressure Rate of rise of temperature Peak temperature Peak pressure Rate of rise of pressure ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The operation of forcing additional air under pressure into the engine cylinder is known as Turbulence Delay period Carburetion Supercharging Turbulence Delay period Carburetion Supercharging ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The mean effective pressure obtained from engine indicator indicates the Average pressure Instantaneous pressure at any instant Maximum pressure developed Minimum pressure Average pressure Instantaneous pressure at any instant Maximum pressure developed Minimum pressure ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The inlet value of a four stroke cycle I.C engine remains open for nearly 125° 180° 200° 235° 125° 180° 200° 235° ANSWER DOWNLOAD EXAMIANS APP
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