Refrigeration and Air Conditioning The thermostatic expansion valve operates on the changes in the None of these Temperature of the evaporator Pressure in the evaporator Degree of superheat at exit from the evaporator None of these Temperature of the evaporator Pressure in the evaporator Degree of superheat at exit from the evaporator ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The relative coefficient of performance is equal to (Actual C.O.P.) /(Theoretical C.O.P.) None of these (Actual C.O.P.) × (Theoretical C.O.P.) (Theoretical C.O.P.)/ (Actual C.O.P.) (Actual C.O.P.) /(Theoretical C.O.P.) None of these (Actual C.O.P.) × (Theoretical C.O.P.) (Theoretical C.O.P.)/ (Actual C.O.P.) ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The leakage in a refrigeration system using Freon is detected by Soap and water Halide torch All of these Sulphur sticks Soap and water Halide torch All of these Sulphur sticks ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Pressure of water vapour is given by μ/[1 - (1 - μ) (Ps/Pb)] [Pv (Pb - Pd)]/ [Pd (Pb - Pv)] 0.622 Pv/ (Pb - Pv) None of these μ/[1 - (1 - μ) (Ps/Pb)] [Pv (Pb - Pd)]/ [Pd (Pb - Pv)] 0.622 Pv/ (Pb - Pv) None of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The wet bulb temperature during sensible heating of air Increases Decreases None of these Remains constant Increases Decreases None of these Remains constant 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 - h2)/ (h1 - h2) (hA - h1)/ (h2 - h1) (h2 - hA)/ (h1 - h2) (h1 - h2)/ (hA - h2) (hA - h2)/ (h1 - h2) (hA - h1)/ (h2 - h1) (h2 - hA)/ (h1 - h2) (h1 - h2)/ (hA - h2) ANSWER DOWNLOAD EXAMIANS APP
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