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Engineering
Mechanical
ME Set-3
Heat transfer
160

Heat transfer MCQ with Answers

160) The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy-diagram represents

condensation of the refrigerant vapour

evaporation of the refrigerant liquid

compression of the refrigerant vapour

metering of the refrigerant liquid

Answer is:

evaporation of the refrigerant liquid

Heat transfer MCQ with Answers

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Related Heat transfer MCQ with Answers

161) Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of

1:1

1:9

9:1

1:3

Answer is:

1:9

162) Freon group of refrigerants are

non-toxic and non-inflammable

toxic

non-inflammable and toxic

non-toxic and inflammable

Answer is:

non-toxic and non-inflammable

163) Ammonia is

non-toxic

non-inflammable

toxic and non-inflammable

highly toxic and inflammable

Answer is:

highly toxic and inflammable

164) In vapour compression cycle using NH3 as refrigerant, initial charge is filled at

suction of compressor

delivery of compressor

high pressure side close to receiver

low pressure side near receiver

Answer is:

high pressure side close to receiver

Heat transfer MCQ with Answers

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