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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The horizontal and non-uniformly spaced lines on a psychrometric chart indicates

Dry bulb temperature
Specific humidity
Dew point temperature
Wet bulb temperature

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Refrigeration and Air Conditioning
In a refrigerating machine, heat rejected is _________ heat absorbed.

None of these
Less than
Equal to
Greater than

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Refrigeration and Air Conditioning
Freon group of refrigerants are

Toxic
Nontoxic and non-inflammable
Inflammable
Non-inflammable and toxic

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Refrigeration and Air Conditioning
In a refrigeration system, heat absorbed in comparison to heat rejected is

Same
Less
More
More for small capacity and less for high capacity

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

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Refrigeration and Air Conditioning
The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process)

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

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MORE MCQ ON Refrigeration and Air Conditioning

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