Top 50+ Solved Vapour Compression Refrigeration MCQ Questions Answer
Q. Heat is absorbed by the refrigerant, during vapour compression refrigeration cycle in
a. Compressor
b. Condenser
c. Evaporator
d. Throttle valve
Q. In a simple saturated vapour compression cycle, the refrigerant is in superheated condition
a. before entering compressor
b. before entering condenser
c. before entering throttle valve
d. before entering evaporator
Q. Sub-cooling is a process of cooling the refrigerant in vapour compression refrigeration system
a. after compression
b. before compression
c. before Throttling
d. none of the above
Q. The order in which main components of vapour compression refrigeration system are used is
a. compressor-evaporator-condenser-throttle valve
b. compressor-condenser-evaporator-throttle valve
c. compressor-throttle valve- evaporator-condenser
d. compressor-condenser- throttle valve- evaporator
Q. The oil separator is incorporated in vapour compression refrigeration system
a. between evaporator and compressor
b. between compressor and condenser
c. between condenser and Throttle valve
d. between throttle valve and evaporator
Q. In vapour compression refrigeration cycle the following data is available Heat rejected in condenser = 65 KW Work done in compressor = 10 kw, then COP( refrigerator) is
a. 4.5
b. 5.5
c. 6.5
d. not possible to find with the given data
Q. With reciprocating compressor in vapour compression refrigeration system, wetcompression is not desirable because
a. liquid trapped up in the head of cylinder may damage the compressor valves
b. COP of the cycle decreases
c. volumetric efficiency of compressor decreases
d. mass flow rate per ton of refrigerant increases
Q. An ideal refrigerant should have
a. low latent heat of vaporization
b. high critical temperature
c. high boiling point
d. high specific volume of vapour
Q. The refrigerant leaving throttle valve is
a. saturated liquid
b. saturated vapour
c. superheated vapour
d. fraction as saturated vapour and remainder as liquid
Q. Freon group of refrigerants
a. toxic
b. inflammable
c. non-toxic and non-inflammable
d. highly toxic and inflammable
Q. The leaks of refrigerant from a cycle may be detected by
a. halide torch test
b. sulphur candle test
c. soap and water test
d. any of the above
Q. During compression in a vapour compression cycle the refrigerant is super heated
a. work done is increased
b. C.O.P is increased
c. Work done is reduced
d. Refrigerating effect is reduced