Refrigeration and Air Conditioning Pick up the wrong statement. A refrigerant should have High boiling point High latent heat of vaporisation Tow specific heat of liquid Higher critical temperature High boiling point High latent heat of vaporisation Tow specific heat of liquid Higher critical temperature ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following refrigerants has lowest freezing point? Freon-12 Freon-22 CO2 NH3 Freon-12 Freon-22 CO2 NH3 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Short horizontal lines on pressure-enthalpy chart show Constant total heat lines Constant temperature lines Constant entropy lines Constant pressure lines Constant total heat lines Constant temperature lines Constant entropy lines Constant pressure lines ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere? Carbon dioxide Sulphur dioxide Ammonia Fluorine Carbon dioxide Sulphur dioxide Ammonia Fluorine ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A thermostatic expansion valve in a refrigeration system Maintains different temperatures in evaporator in proportion to load Is suitable only for constant load systems None of these Ensures the evaporator completely filled with refrigerant of the load Maintains different temperatures in evaporator in proportion to load Is suitable only for constant load systems None of these Ensures the evaporator completely filled with refrigerant of the load ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The sensible heat factor during the heating and humidification process is given by (where h₁ = Enthalpy of air entering the heating coil, h₂ = Enthalpy of air leaving the heating coil, and hA = Enthalpy of air at the end of humidification process) (hA - h1)/ (h2 - h1) (hA - h2)/ (h1 - h2) (h2 - hA)/ (h1 - h2) (h1 - h2)/ (hA - h2) (hA - h1)/ (h2 - h1) (hA - h2)/ (h1 - h2) (h2 - hA)/ (h1 - h2) (h1 - h2)/ (hA - h2) ANSWER DOWNLOAD EXAMIANS APP
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