Refrigeration and Air Conditioning The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by ( O.P.)P = ( O.P.)R + 1 O.P)P = ( ( O.P)P = ( O.P)R - 1 ( O.P)R O.P.)P = ( O.P.)R + 2 ( ( O.P.)P = ( O.P.)R + 1 O.P)P = ( ( O.P)P = ( O.P)R - 1 ( O.P)R O.P.)P = ( O.P.)R + 2 ( ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The thermostatic expansion valve operates on the changes in the Temperature of the evaporator None of these Degree of superheat at exit from the evaporator Pressure in the evaporator Temperature of the evaporator None of these Degree of superheat at exit from the evaporator Pressure in the evaporator ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The horizontal and non-uniformly spaced lines on a psychrometric chart indicates Dry bulb temperature Specific humidity Wet bulb temperature Dew point temperature Dry bulb temperature Specific humidity Wet bulb temperature Dew point temperature ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Ammonia absorption refrigeration cycle requires Nearly same work input as for vapour compression cycle Maximum work input Very little work input Zero work input Nearly same work input as for vapour compression cycle Maximum work input Very little work input Zero work input ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a domestic vapour compression refrigerator, the refrigerant commonly used is R-12 CO? All of these Ammonia R-12 CO? All of these Ammonia ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The total pressure exerted by the mixture of air and water vapour is equal to the sum of pressures which each constituent would exert, if it occupied the same space by itself. This statement is called Avogadro's hypothesis Kinetic theory of gases Dalton's law of partial pressures Newton's law of gases Avogadro's hypothesis Kinetic theory of gases Dalton's law of partial pressures Newton's law of gases ANSWER DOWNLOAD EXAMIANS APP
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