173) The advantage of dry compression is that

it permits higher speeds to be used

it permits complete evaporation in the evaporator

it results in high volumetirc and mechanical efficiency

all of the above

Answer is:

all of the above

Heat transfer MCQ with Answers

For more MCQ's Click Here

174) Choose the wrong statement

Temperature of medium being cooled must be below that of the evaporator

Refrigerant leaves the condenser as liquid

All solar thermally operated absorption systems are capable only of intermittent operation

frost on evaporator reduces heat transfer

Answer is:

Temperature of medium being cooled must be below that of the evaporator

175) Under-cooling in a refrigeration cycle

increases COP

decreases COF

COP remains unaltered

other factors decide COP

Answer is:

increases COP

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

high

low

optimum

any value

Answer is:

low

177) The coefficient of performance is the ratio of the refrigerant effect to the

heat of compression

work done by compressor

enthalpy increase in compressor

all of the above

Answer is:

all of the above

Heat transfer MCQ with Answers

For more MCQ's Click Here

173) The advantage of dry compression is that

all of the above

Heat transfer MCQ with Answers

Related Heat transfer MCQ with Answers

174) Choose the wrong statement

Temperature of medium being cooled must be below that of the evaporator

175) Under-cooling in a refrigeration cycle

increases COP

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

low

177) The coefficient of performance is the ratio of the refrigerant effect to the

all of the above

Heat transfer MCQ with Answers