Refrigeration and Air Conditioning Most of the domestic refrigerators work on the following refrigeration system Carnot cycle Vapour absorption Vapour compression Electrolux refrigerator Carnot cycle Vapour absorption Vapour compression Electrolux refrigerator ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The emissivity of a polished silver body is ____ as compared to black body. Low Very low High Same Low Very low High Same ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning One of the purposes of sub cooling the liquid refrigerant is to Ensure that only liquid and not the vapour enters the expansion (throttling) valve Reduce compressor discharge temperature Reduce compressor overheating Increase cooling effect Ensure that only liquid and not the vapour enters the expansion (throttling) valve Reduce compressor discharge temperature Reduce compressor overheating Increase cooling effect ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following statement is correct for ammonia as a refrigerant? All of these It reacts with copper and its alloys. It requires large displacement per TR compared to fluoro carbons. It is toxic to mucous membranes. All of these It reacts with copper and its alloys. It requires large displacement per TR compared to fluoro carbons. It is toxic to mucous membranes. ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be Small Equal Anything High Small Equal Anything High ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity) 20°C DBT and 80% RH 25°C DBT and 40% RH 25°C DBT and 100% RH 22°C DBT and 60% RH 20°C DBT and 80% RH 25°C DBT and 40% RH 25°C DBT and 100% RH 22°C DBT and 60% RH ANSWER DOWNLOAD EXAMIANS APP
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