Refrigeration and Air Conditioning R-12 is generally preferred over R-22 in deep freezers since 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 All of these It gives higher coefficient of performance It has low operating pressures ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to Red Bright green Orange Yellow Red Bright green Orange Yellow ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called Relative humidity Humidity ratio Degree of saturation Absolute humidity Relative humidity Humidity ratio Degree of saturation Absolute humidity ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The reduced ambient air cooling system has One cooling turbine and one heat exchanger One cooling turbine and two heat exchangers Two cooling turbines and two heat exchangers Two cooling turbines and one heat exchanger One cooling turbine and one heat exchanger One cooling turbine and two heat exchangers Two cooling turbines and two heat exchangers Two cooling turbines and one heat exchanger ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The value of C.O.P in vapour compression cycle is usually Always less than unity Equal to unity Any one of the above Always more than unity Always less than unity Equal to unity Any one of the above Always more than unity ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The dehumidification process, on the psychrometric chart, is shown by Horizontal line Curved line Vertical line Inclined line Horizontal line Curved line Vertical line Inclined line ANSWER DOWNLOAD EXAMIANS APP
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