Refrigeration and Air Conditioning Short horizontal lines on pressure-enthalpy chart show Constant entropy lines Constant total heat lines Constant pressure lines Constant temperature lines Constant entropy lines Constant total heat lines Constant pressure lines Constant temperature lines ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by Lowering the higher temperature Operating the machine at higher speeds Raising the higher temperature Operating the machine at lower speeds Lowering the higher temperature Operating the machine at higher speeds Raising the higher temperature Operating the machine at lower speeds ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The leaks in a refrigeration system using Freon are detected by Sulphur sticks which on detection gives white smoke Using reagents Halide torch which on detection produces greenish flame lighting Smelling Sulphur sticks which on detection gives white smoke Using reagents Halide torch which on detection produces greenish flame lighting Smelling ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The process, generally used in summer air conditioning to cool and dehumidify the air, is called Cooling and dehumidification Dehumidification Heating and humidification Humidification Cooling and dehumidification Dehumidification Heating and humidification Humidification ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In vapour compression cycle the condition of refrigerant is superheated vapour Before entering the expansion valve Before passing through the condenser After passing through the condenser After passing through the expansion or throttle valve Before entering the expansion valve Before passing through the condenser After passing through the condenser After passing through the expansion or throttle valve ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning During cooling and dehumidification, dry bulb temperature Remains constant Decreases None of these Increases Remains constant Decreases None of these Increases ANSWER DOWNLOAD EXAMIANS APP
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