156) In a refrigeration cycle, the flow of refrigerant is controlled by

compressor

condenser

evaporator

expansion valve

Answer is:

expansion valve

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

condenser

evaporator

compressor

expansion valve

Answer is:

evaporator

158) The leaks in a refrigeration system using Freon are detected by

halide torch which on detection produces greenish flame lighting

sulphur sticks which on detection gives white smoke

using reagents

smelling

Answer is:

halide torch which on detection produces greenish flame lighting

159) Pick up the incorrect statement

lithium bromide used in vapour absorption cycle is nonvolatile

lithium bromide plant can′t operate below 0°C

a separator is used in lithium bromide plant to remove the unwanted water vapour by condensing

concentration of solution coming out of lithium bromide generator is more in comparison to that entering the generator

Answer is:

a separator is used in lithium bromide plant to remove the unwanted water vapour by condensing

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

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156) In a refrigeration cycle, the flow of refrigerant is controlled by

expansion valve

Heat transfer MCQ with Answers

Related Heat transfer MCQ with Answers

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

evaporator

158) The leaks in a refrigeration system using Freon are detected by

halide torch which on detection produces greenish flame lighting

159) Pick up the incorrect statement

a separator is used in lithium bromide plant to remove the unwanted water vapour by condensing

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

evaporation of the refrigerant liquid

Heat transfer MCQ with Answers