Refrigeration and Air Conditioning Efficiency of a Carnot engine is given as 80%. If the cycle direction be reversed, what will be the value of C.O.P. of reversed Carnot Cycle? 0.8 0.5 0.25 1.25 0.8 0.5 0.25 1.25 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process) (hA - h1)/ (h2 - h1) (h1 - h2)/ (hA - h2) (h2 - hA)/ (h1 - h2) (hA - h2)/ (h1 - h2) (hA - h1)/ (h2 - h1) (h1 - h2)/ (hA - h2) (h2 - hA)/ (h1 - h2) (hA - h2)/ (h1 - h2) ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be High, of the order of 25° Zero As low as possible (3 to 11°C) Any value High, of the order of 25° Zero As low as possible (3 to 11°C) Any value 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 More More/less depending on rating Less Same More More/less depending on rating Less Same ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The leaks in a refrigeration system using Freon are detected by Smelling Halide torch which on detection produces greenish flame lighting Using reagents Sulphur sticks which on detection gives white smoke Smelling Halide torch which on detection produces greenish flame lighting Using reagents Sulphur sticks which on detection gives white smoke ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The pressure at the outlet of a refrigerant compressor is called Critical pressure Suction pressure Back pressure Discharge pressure Critical pressure Suction pressure Back pressure Discharge pressure ANSWER DOWNLOAD EXAMIANS APP
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