Refrigeration and Air Conditioning The dry bulb temperature during sensible heating of air None of these Remains constant Decreases Increases None of these Remains constant Decreases Increases 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 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 Raising the higher temperature Lowering the higher temperature ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning While designing the refrigeration system of an aircraft, the prime consideration is that the Power per TR is low Mass of refrigerant circulated in the system is low Mass of the refrigeration equipment is low System has high C.O.P. Power per TR is low Mass of refrigerant circulated in the system is low Mass of the refrigeration equipment is low System has high C.O.P. ANSWER DOWNLOAD EXAMIANS APP
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 + 2 O.P)R - 1 O.P.)R + 1 ( O.P.)P = ( O.P)R ( ( O.P)P = ( O.P)P = ( ( O.P.)P = ( O.P.)R + 2 O.P)R - 1 O.P.)R + 1 ( O.P.)P = ( O.P)R ( ( O.P)P = ( O.P)P = ( ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The desirable property of a refrigerant is High critical temperature Low boiling point All of these High latent heat of vaporisation High critical temperature Low boiling point All of these High latent heat of vaporisation ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P. Equally More Less Unpredictable Equally More Less Unpredictable ANSWER DOWNLOAD EXAMIANS APP
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