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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Wet bulb depression
Dry bulb depression
Degree of saturation
Dew point depression

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Refrigeration and Air Conditioning
The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents

Metering of the refrigerant liquid
Compression of the refrigerant vapour
Condensation of the refrigerant vapour
Evaporation of the refrigerant liquid

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Refrigeration and Air Conditioning
Chaperon equation is a relation between

Specific volume and enthalpy
Temperature, pressure and enthalpy
Temperature and enthalpy
Temperature, pressure, specific volume and enthalpy

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Refrigeration and Air Conditioning
The humidity ratio or specific humidity is the mass of water vapour present in

1 kg of wet air
1 m3 of wet air
1 m3 of dry air
1 kg of dry air

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Refrigeration and Air Conditioning
During adiabatic saturation process on unsaturated air ___ remains constant.

Dew point temperature
Wet bulb temperature
Relative humidity
Dry bulb temperature

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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)

(h2 - hA)/ (h1 - h2)
(hA - h2)/ (h1 - h2)
(hA - h1)/ (h2 - h1)
(h1 - h2)/ (hA - h2)

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MORE MCQ ON Refrigeration and Air Conditioning

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