Refrigeration and Air Conditioning Allowable pressure on high pressure side or ammonia absorption system is of the order of 24 bars Slightly above atmospheric pressure 56 bars Atmospheric pressure 24 bars Slightly above atmospheric pressure 56 bars Atmospheric pressure ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following statement is correct for ammonia as a refrigerant? It reacts with copper and its alloys. It is toxic to mucous membranes. It requires large displacement per TR compared to fluoro carbons. All of these It reacts with copper and its alloys. It is toxic to mucous membranes. It requires large displacement per TR compared to fluoro carbons. All of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In vapour compression cycle, the condition of refrigerant is very wet vapour After passing through the expansion or throttle valve After passing through the condenser Before passing through the condenser Before entering the compressor After passing through the expansion or throttle valve After passing through the condenser Before passing through the condenser Before entering the compressor 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.)P = ( O.P)R - 1 ( O.P)P = ( O.P.)R + 1 O.P.)R + 2 ( ( O.P.)P = ( ( O.P)R O.P)P = ( O.P.)P = ( O.P)R - 1 ( O.P)P = ( O.P.)R + 1 O.P.)R + 2 ( ( O.P.)P = ( ( O.P)R ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The process, generally used in summer air conditioning to cool and dehumidify the air, is called Dehumidification Humidification Cooling and dehumidification Heating and humidification Dehumidification Humidification Cooling and dehumidification Heating and humidification ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a vapour compression refrigeration system, a throttle valve is used in place of an expander because It leads to significant cost reduction The positive work in isentropic expansion of liquid is very small It improves the C.O.P., as the condenser is small It considerably reduces mass of the system It leads to significant cost reduction The positive work in isentropic expansion of liquid is very small It improves the C.O.P., as the condenser is small It considerably reduces mass of the system ANSWER DOWNLOAD EXAMIANS APP
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