Refrigeration and Air Conditioning Vertical lines on pressure-enthalpy chart show constant Total heat lines Pressure lines Temperature lines Entropy lines Total heat lines Pressure lines Temperature lines Entropy lines ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by Operating the machine at higher speeds Raising the higher temperature Lowering the higher temperature Operating the machine at lower speeds Operating the machine at higher speeds Raising the higher temperature Lowering the higher temperature Operating the machine at lower speeds ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In chemical dehumidification process, Wet bulb temperature decreases Dew point temperature decreases Dry bulb temperature increases All of these Wet bulb temperature decreases Dew point temperature decreases Dry bulb temperature increases All of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A refrigerant compressor is used to Raise the temperature of the refrigerant All of these Circulate the refrigerant through the refrigerating system Raise the pressure of the refrigerant Raise the temperature of the refrigerant All of these Circulate the refrigerant through the refrigerating system Raise the pressure of the refrigerant ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The superheating in a refrigeration cycle Decreases C.O.P. Increases C.O.P. None of these Does not alter C.O.P. Decreases C.O.P. Increases C.O.P. None of these Does not alter C.O.P. ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The bypass factor, in case of sensible cooling of air, is given by (where td₁ = Dry bulb temperature of air entering the cooling coil, td₂ = Dry bulb temperature of air leaving the cooling coil, and td₃ = Dry bulb temperature of the cooling coil) (td₂ -td₃)/( td₁ -td₃) (td₁ -td₃)/( td₂ -td₃) (td₃ -td₂)/( td₁ -td₃) (td₃ -td₁)/( td₂ -td₃) (td₂ -td₃)/( td₁ -td₃) (td₁ -td₃)/( td₂ -td₃) (td₃ -td₂)/( td₁ -td₃) (td₃ -td₁)/( td₂ -td₃) ANSWER DOWNLOAD EXAMIANS APP
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