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Mechanical Engineering Objective Questions { Refrigeration and Air Conditioning }

22. The refrigerant for a refrigerator should have
A.High sensible heat
B.High total heat
C.High latent heat
D.Low latent heat
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23. Rating of a domestic refrigerator is of the order of
A.0.1 ton
B.5 tons
C.10 tons
D.40 tons
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24. The COP of a domestic refrigerator
A.Is less than 1
B.Is more than U.
C.Is equal to 1
D.Depends upon the make
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25. The domestic refrigerator uses following tjpe of compressor
C.Miniature sealed unit
D.Piston type reciprocating--
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26. Refrigeration in aeroplanes usually employs the following refrigerant
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27. Domestic refrigerator working on vapour compression cycle uses the following type of expansion device
A.Electrically operated throttling valve
B.Manually operated valve
C.Thermostatic valve
D.Capillary tube
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28. Air refrigeration operates on
A.Carnot cycle
B.Brayton cycle.
C.Rankine cycle
D.Erricson cycle
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