Refrigeration and Air Conditioning Most thermostatic expansion valves are set for a superheat of 20°C 10°C 5°C 15°C 20°C 10°C 5°C 15°C ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Where does the lowest temperature occur in a vapour compression cycle? Compressor Condenser Expansion valve Evaporator Compressor Condenser Expansion valve Evaporator ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P. Unpredictable Equally Less More Unpredictable Equally Less More ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Nusselt number (NN) is given by NN = μ cp/k NN = V²/t.cp NN = ρ V l /μ NN = hl/k NN = μ cp/k NN = V²/t.cp NN = ρ V l /μ NN = hl/k ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Short horizontal lines on pressure-enthalpy chart show Constant pressure lines Constant entropy lines Constant total heat lines Constant temperature lines Constant pressure lines Constant entropy lines Constant total heat lines Constant temperature lines ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The refrigerant used in small tonnage commercial machines (hermetically sealed units) is Ammonia Carbon dioxide R-12 Sulphur dioxide Ammonia Carbon dioxide R-12 Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
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