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Engineering
Mechanical
ME Set-3
Heat transfer
186

Heat transfer MCQ with Answers

186) Which of the following refrigerants has lowest freezing point

Freon-12

NH3

C02

Freon-22

Answer is:

Freon-22

Heat transfer MCQ with Answers

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Related Heat transfer MCQ with Answers

187) The COP of a vapour compression plant in comparison to vapour absorption plant is

more

less

same

more/less depending on size of plant

Answer is:

more

188) The C.O.P. of a domestic refrigerator in comparison to domestic air conditioner will be

same

more

less

dependent on weather conditions

Answer is:

less

189) The evolution of heat of solution takes place in ammonia absorption plant when

ammonia vapour goes into solution

ammonia vapour is driven out of solution

lithium bromide mixes with ammonia

weak solution mixes with strong solution

Answer is:

ammonia vapour goes into solution

190) The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P.

more

less

equally.

unpredictable

Answer is:

more

Heat transfer MCQ with Answers

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