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 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 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The evaporator changes the low pressure liquid refrigerant from the expansion valve into Low pressure liquid and vapour refrigerant None of these High pressure liquid refrigerant Low pressure vapour refrigerant Low pressure liquid and vapour refrigerant None of these High pressure liquid refrigerant Low pressure vapour refrigerant ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The coefficient of performance is the ratio of the refrigerant effect to the Heat of compression Work done by compressor All of these Enthalpy increase in compressor Heat of compression Work done by compressor All of these Enthalpy increase in compressor ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is There is no such consideration More than or equal to 3.65 kg Less than 2 kg More than 10 kg There is no such consideration More than or equal to 3.65 kg Less than 2 kg More than 10 kg ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Pressure of water vapour is given by μ/[1 - (1 - μ) (Ps/Pb)] [Pv (Pb - Pd)]/ [Pd (Pb - Pv)] None of these 0.622 Pv/ (Pb - Pv) μ/[1 - (1 - μ) (Ps/Pb)] [Pv (Pb - Pd)]/ [Pd (Pb - Pv)] None of these 0.622 Pv/ (Pb - Pv) ANSWER DOWNLOAD EXAMIANS APP
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