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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Where does the lowest temperature occur in a vapour compression cycle?

Condenser
Expansion valve
Evaporator
Compressor

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Refrigeration and Air Conditioning
Bell Coleman cycle is a

Reversed Carnot cycle
Reversed Otto cycle
Reversed Rankine cycle
Reversed Joule cycle

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Refrigeration and Air Conditioning
If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

6
0.2
1.2
5

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Refrigeration and Air Conditioning
Which of the following refrigerants has lowest freezing point?

Freon-22
CO2
Freon-12
NH3

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Refrigeration and Air Conditioning
R-12 is generally preferred over R-22 in deep freezers since

It is miscible with oil over large range of temperatures
All of these
It gives higher coefficient of performance
It has low operating pressures

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Refrigeration and Air Conditioning
The refrigerant for a refrigerator should have

Low latent heat
High latent heat
High total heat
High sensible heat

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MORE MCQ ON Refrigeration and Air Conditioning

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