Refrigeration and Air Conditioning R-12 is generally preferred over R-22 in deep freezers since All of these It gives higher coefficient of performance It has low operating pressures It is miscible with oil over large range of temperatures All of these It gives higher coefficient of performance It has low operating pressures It is miscible with oil over large range of temperatures ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In vapour compression cycle, the condition of refrigerant is very wet vapour Before entering the compressor After passing through the expansion or throttle valve Before passing through the condenser After passing through the condenser Before entering the compressor After passing through the expansion or throttle valve Before passing through the condenser After passing through the condenser ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be Less More Same More/less depending on rating Less More Same More/less depending on rating ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor. Evaporator Compressor Condenser Expansion valve Evaporator Compressor Condenser Expansion valve ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The relative coefficient of performance is Actual COP/theoretical COP None of these Actual COP × theoretical COP Theoretical COP/actual COP Actual COP/theoretical COP None of these Actual COP × theoretical COP Theoretical COP/actual COP ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a vapour compression system, the condition of refrigerant before entering the expansion or throttle valve is Very wet vapour Dry vapour Wet vapour High pressure saturated liquid Very wet vapour Dry vapour Wet vapour High pressure saturated liquid ANSWER DOWNLOAD EXAMIANS APP
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