Refrigeration and Air Conditioning The relative coefficient of performance is Theoretical COP/actual COP None of these Actual COP/theoretical COP Actual COP × theoretical COP Theoretical COP/actual COP None of these Actual COP/theoretical COP Actual COP × theoretical COP ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A vapour absorption refrigerator uses _________ as a refrigerant. Aqua-ammonia Freon Water Ammonia Aqua-ammonia Freon Water Ammonia ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since These react with plants and cause greenhouse effect These react with oxygen and cause its depletion These react with water vapour and cause acid rain These react with ozone layer These react with plants and cause greenhouse effect These react with oxygen and cause its depletion These react with water vapour and cause acid rain These react with ozone layer ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The vapour pressure of refrigerant should be Higher than atmospheric pressure Equal to atmospheric pressure Lower than atmospheric pressure Could be anything Higher than atmospheric pressure Equal to atmospheric pressure Lower than atmospheric pressure Could be anything ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In case of sensible cooling of air, the coil efficiency is given by 1 + B.P.F. P.F. - 1 1/ B.P.F. 1 - B.P.F. 1 + B.P.F. P.F. - 1 1/ B.P.F. 1 - B.P.F. ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The lowest thermal diffusivity is of Lead Rubber Iron Aluminium Lead Rubber Iron Aluminium ANSWER DOWNLOAD EXAMIANS APP
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