Refrigeration and Air Conditioning If a gas is to be liquefied, its temperature must be Reduced to a value below its critical temperature Increased to a value above its critical temperature None of these Equal to critical temperature Reduced to a value below its critical temperature Increased to a value above its critical temperature None of these Equal to critical temperature ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The pressure at the outlet of a refrigerant compressor is called Discharge pressure Suction pressure Critical pressure Back pressure Discharge pressure Suction pressure Critical pressure Back pressure 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) (h2 - hA)/ (h1 - h2) (hA - h1)/ (h2 - h1) (h1 - h2)/ (hA - h2) (hA - h2)/ (h1 - h2) (h2 - hA)/ (h1 - h2) (hA - h1)/ (h2 - h1) (h1 - h2)/ (hA - h2) (hA - h2)/ (h1 - h2) ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In which of the following refrigeration system, waste heat can be effectively used? Vapour absorption cycle None of the listed here Air refrigeration cycle Vapour compression cycle Vapour absorption cycle None of the listed here Air refrigeration cycle Vapour compression cycle ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The specific humidity during dehumidification process Increases Decreases Remains constant None of these Increases Decreases Remains constant None of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process Involves no change in volume Takes place at constant temperature Takes place at constant entropy Takes place at constant pressure Involves no change in volume Takes place at constant temperature Takes place at constant entropy Takes place at constant pressure ANSWER DOWNLOAD EXAMIANS APP
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