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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In S.J. unit, one ton of refrigeration is equal to

210 kJ/ min
21 kJ/ min
420 kJ/ min
840 kJ/ min

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Refrigeration and Air Conditioning
The specific humidity during dehumidification process

Increases
Decreases
None of these
Remains constant

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

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

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

Dry bulb temperature
Dew point temperature
Wet bulb temperature
Relative humidity

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Refrigeration and Air Conditioning
The dry bulb temperature during sensible heating of air

Decreases
Remains constant
None of these
Increases

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Refrigeration and Air Conditioning
The relative coefficient of performance is equal to

(Actual C.O.P.) /(Theoretical C.O.P.)
(Actual C.O.P.) × (Theoretical C.O.P.)
None of these
(Theoretical C.O.P.)/ (Actual C.O.P.)

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