Refrigeration and Air Conditioning Under cooling in a refrigeration cycle Decreases C.O.P Increases C.O.P Other factors decide C.O.P O.P remains unaltered Decreases C.O.P Increases C.O.P Other factors decide C.O.P O.P remains unaltered 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 7.44 kW 1.86 kW 3.72 kW 18.6 kW 7.44 kW 1.86 kW ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Highest temperature encountered in refrigeration cycle should be At critical Temperature Near critical temperature of refrigerant Much below critical temperature Above critical temperature At critical Temperature Near critical temperature of refrigerant Much below critical temperature Above critical temperature ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process Takes place at constant pressure Takes place at constant temperature Involves no change in volume Takes place at constant entropy Takes place at constant pressure Takes place at constant temperature Involves no change in volume Takes place at constant entropy ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a pressure enthalpy chart, the space to the left of the saturated liquid line represents Sub-cooled liquid region Superheated vapour region Wet vapour region None of the listed here Sub-cooled liquid region Superheated vapour region Wet vapour region None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Short horizontal lines on pressure-enthalpy chart show Constant pressure lines Constant temperature lines Constant total heat lines Constant entropy lines Constant pressure lines Constant temperature lines Constant total heat lines Constant entropy lines ANSWER DOWNLOAD EXAMIANS APP
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