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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P.

More
Unpredictable
Equally
Less

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

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

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Refrigeration and Air Conditioning
The process, generally used in summer air conditioning to cool and dehumidify the air, is called

Cooling and dehumidification
Heating and humidification
Humidification
Dehumidification

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Refrigeration and Air Conditioning
Carbon dioxide is

Colourless
Non-flammable
All of the listed here
Odourless

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Refrigeration and Air Conditioning
The dry bulb temperature lines, on the psychrometric chart are

Curved lines
Vertical and uniformly spaced
Horizontal and non-uniformly spaced
Horizontal and uniformly spaced

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Refrigeration and Air Conditioning
An infinite parallel planes with emissivities e₁ and e₂, the interchange factor for radiation from surface 1 to surface 2 is given by

e₁ + e₂
e₁e₂
(e₁ + e₂)/ e₁ + e₂ - e₁e₂
1/e₁ + 1/e₂

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MORE MCQ ON Refrigeration and Air Conditioning

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