Refrigeration and Air Conditioning When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by Raising the higher temperature Lowering the higher temperature Operating the machine at higher speeds Operating the machine at lower speeds Raising the higher temperature Lowering the higher temperature Operating the machine at higher speeds Operating the machine at lower speeds ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The temperature of air recorded by a thermometer, when it is not affected by the moisture present in the air, is called Wet bulb temperature Dew point temperature Dry bulb temperature None of these Wet bulb temperature Dew point temperature Dry bulb temperature None of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is 3.72 kW 18.6 kW 1.86 kW 7.44 kW 3.72 kW 18.6 kW 1.86 kW 7.44 kW ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning During cooling and dehumidification, dry bulb temperature Decreases Increases None of these Remains constant Decreases Increases None of these Remains constant ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Air conditioning means Dehumidifying All of these Heating Cooling Dehumidifying All of these Heating Cooling ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following refrigerant has the lowest freezing point? R-22 Ammonia R-11 R-12 R-22 Ammonia R-11 R-12 ANSWER DOWNLOAD EXAMIANS APP
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