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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Condensing temperature in a refrigerator is the temperature

Of cooling medium
At which refrigerant gas becomes liquid
Of freezing zone
Of evaporator

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Refrigeration and Air Conditioning
The wet bulb temperature during sensible cooling of air

None of these
Remains constant
Decreases
Increases

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Refrigeration and Air Conditioning
An evaporator is also known as

Freezing coil
All of these
Chilling coil
Cooling coil

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Refrigeration and Air Conditioning
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of

Brass
Steel
Aluminium
Copper

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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)

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

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Refrigeration and Air Conditioning
In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is

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

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MORE MCQ ON Refrigeration and Air Conditioning

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