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31.

Where does the lowest temperature occur in a vapour compression cycle ?

A.	condenser	B.	evaporator
C.	compressor	D.	expansion valve

32.

Which of the following is not a desirable property of a refrigerant

A.	high triiscibility with oil	B.	low boiling point
C.	good electrical conductor	D.	large latent heat

33.

One ton of the refrigeration is

A.	the standard unit used in refrigeration problems	B.	the cooling effect produced by melting 1 ton of ice
C.	the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours	D.	the refrigeration effect to produce 1 ton of ice at NTP conditions

34.

Short horizontal lines on pressure-enthalpy chart show

A.	constant pressure lines	B.	constant temperature lines
C.	constant total heat lines	D.	constant entropy lines

35.

Ammonia is

A.	non-toxic	B.	non-inflammable
C.	toxic and non-inflammable	D.	highly toxic and inflammable

36.

Condensing temperature in a refrigerator is the temperature

A.	of cooling medium	B.	of freezing zone
C.	of evaporator	D.	at which refrigerant gas becomes liquid

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