250+ MCQs on Compound VCR System – Cascade Systems

Refrigeration Questions and Answers for Campus interviews on “Compound VCR System – Cascade Systems ”.

1. Multiple refrigerants can be used in the cascade refrigeration system.
a) True
b) False

Answer: a
Clarification: Multiple refrigerants can be used in the cascade refrigeration system. It helps to attain lower temperatures, and the refrigeration effect can be enormously increased.

2. How is the cascade system achieved?
a) VCR system in a parallel combination
b) VAR system in a series combination
c) VAR system in a parallel combination
d) VCR system in a series combination

Answer: d
Clarification: The cascade refrigeration system is structured by connecting two or more vapor compression refrigeration systems in series which use different refrigerants.

3. Cascade refrigeration system reduces the C.O.P.
a) True
b) False

Answer: b
Clarification: Due to the usage of multiple refrigerants and temperature overlap phenomenon, the refrigeration effect is increased, and overall work is reduced, leading to enhance the C.O.P. of the system.