Internal Combustion Engines In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will _________ the knocking tendency. None of these Increase Decrease Not effected None of these Increase Decrease Not effected ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine? Inlet valve closing before bottom dead center Exhaust valve closing after top dead center Inlet valve opening before top dead center Inlet valve closing after bottom dead center Inlet valve closing before bottom dead center Exhaust valve closing after top dead center Inlet valve opening before top dead center Inlet valve closing after bottom dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The normal heptane (C₇Hâ‚₆) is given a rating of ________ octane number. 50 120 100 50 120 100 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The delay period in compression ignition engines depends upon Nature of the fuel mixture strength Relative velocity between the fuel injection and air turbulence pressure of residual gases All of these Temperature and pressure in the cylinder at the time of injection Nature of the fuel mixture strength Relative velocity between the fuel injection and air turbulence pressure of residual gases All of these Temperature and pressure in the cylinder at the time of injection ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knocking in spark ignition engines can be reduced by None of these Increasing the engine speed Retarding the spark Both (A) and (B) None of these Increasing the engine speed Retarding the spark Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In a four stroke cycle petrol engine, the expansion Starts at 30° before top dead center and ends at 50° before bottom dead center May start and end anywhere Starts at 30° after top dead center and ends at 50° after bottom dead center Starts at top dead center and ends at bottom dead center Starts at 30° before top dead center and ends at 50° before bottom dead center May start and end anywhere Starts at 30° after top dead center and ends at 50° after bottom dead center Starts at top dead center and ends at bottom dead center ANSWER DOWNLOAD EXAMIANS APP
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