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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Wet bulb temperature
Dew point temperature
Relative humidity
Dry bulb temperature

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Refrigeration and Air Conditioning
The minimum temperature to which water can be cooled in a cooling tower is

Wet bulb temperature of air
Ambient air temperature
Dew point temperature of air
Dry bulb temperature of air

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Refrigeration and Air Conditioning
Nusselt number (NN) is given by

NN = V²/t.cp
NN = ρ V l /μ
NN = hl/k
NN = μ cp/k

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Refrigeration and Air Conditioning
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

Superheated vapour region
Wet vapour region
None of the listed here
Sub-cooled liquid region

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Refrigeration and Air Conditioning
When the air is passed through an insulated chamber having sprays of water maintained at a temperature higher than the dew point temperature of entering air but lower than its dry bulb temperature, then the air is said to be

Heated and humidified
Cooled and humidified
Cooled and dehumidified
Heated and dehumidified

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Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

1 to 3 TR
5 to 7 TR
0.1 to 0.3 TR
3 to 5 TR

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MORE MCQ ON Refrigeration and Air Conditioning

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