Refrigeration and Air Conditioning The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture of water and R-12 Sulphur dioxide Lithium bromide Carbon dioxide R-12 Sulphur dioxide Lithium bromide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A refrigeration system Removes heat from a high temperature body and delivers it to a low temperature body None of the listed here Removes heat from a low temperature body and delivers it to a high temperature body Rejects energy to a low temperature body Removes heat from a high temperature body and delivers it to a low temperature body None of the listed here Removes heat from a low temperature body and delivers it to a high temperature body Rejects energy to a low temperature body ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be Less More More/less depending on rating Same Less More More/less depending on rating Same ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer. None of these Higher Same Lower None of these Higher Same Lower ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The formation of frost on cooling coils in a refrigerator Increases heat transfer Reduces power consumption Increases power consumption Improves C.O.P. of the system Increases heat transfer Reduces power consumption Increases power consumption Improves C.O.P. of the system ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about 1.25 1 2.15 5.12 1.25 1 2.15 5.12 ANSWER DOWNLOAD EXAMIANS APP
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