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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Vapour compression refrigeration is somewhat like

None of these
Reversed Carnot cycle
Carnot cycle

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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)

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

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Refrigeration and Air Conditioning
During sensible heating of air _________ decreases.

Wet bulb temperature
Dry bulb temperature
Specific humidity
Relative humidity

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Refrigeration and Air Conditioning
The alignment circle is marked on the psychrometric chart at

26°C DBT and 50% RH
20°C DBT and 50% RH
20°C DBT and 60% RH
26°C DBT and 60% RH

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

Wet bulb temperature
Relative humidity
Dew point temperature
Dry bulb temperature

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Refrigeration and Air Conditioning
The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.

More
Less
None of these
Same

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