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Choose the wrong statement

A.	Temperature of medium being cooled must be below that of the evaporator	B.	Refrigerant leaves the condenser as liquid
C.	All solar thermally operated absorption systems are capable only of intermittent operation	D.	frost on evaporator reduces heat transfer

Efficiency of a Cornot engine is given as 80%. If the- cycle direction be reversed, what will be the value of COP of reversed Carnot cycle

A.	1.25	B.	0.8
C.	0.5	D.	0.25

For obtaining high COP, the pressure range of compressor should be

A.	high	B.	low
C.	optimum	D.	any value

10.

For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then

A.	bigger cabinet should be used	B.	smaller cabinet should be used
C.	perfectly tight vapour seal should be used	D.	refrigerant with lower evaporation temperature should be used

11.

Highest pressure encountered in a refrigeration system should be

A.	critical pressure of refrigerant	B.	much below critical pressure
C.	much above critical pressure	D.	near critical pressure

12.

If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be

A.	same	B.	more
C.	less	D.	more/less depending on rating

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