Refrigeration and Air Conditioning
The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will

May increase or decrease depending on the type of refrigerant used
Decrease
Increase
Remain unaffected

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Refrigeration and Air Conditioning
The bypass factor for a cooling coil

Decreases with increase in velocity of air passing through it
May increase or decrease with increase in velocity of air passing through it depending upon the condition of air entering
Increases with increase in velocity of air passing through it
Remains unchanged with increase in velocity of air passing through it

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Refrigeration and Air Conditioning
In a bootstrap air evaporative cooling system, the evaporator is provided

Between the combustion chamber and the first heat exchanger
Between the first heat exchanger and the secondary compressor
Between the second heat exchanger and the cooling turbine
Between the secondary compressor and the second heat exchanger

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