Explore topic-wise MCQs in Refrigeration.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Refrigeration knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following is not true about single-stage compression?

A. Size of the cylinder is very large
B. Difficult to reject a good amount of heat in a lesser time of compression
C. Volumetric efficiency will be low
D. Safe at a higher temperature
Answer» E.
Discussion
2.

What is the value of optimum intermediate pressure is the cooling ratio is fixed in a compound VCR with intercooling having suction and discharge pressure as 2 and 8 bar respectively?

A. 2 bar
B. 4 bar
C. 6 bar
D. 8 bar
Answer» C. 6 bar
Discussion
3.

Multistage compression provides effective lubrication.

A. False
B. True
Answer» C.
Discussion
4.

What is the expression for optimum intercooler or intermediate pressure P2 if the cooling ratio is fixed in a compound compression refrigeration system with intercooling?

A. P<sub>2</sub> = P<sub>1</sub> / P<sub>3</sub>
B. P<sub>2</sub> = P<sub>3</sub> / P<sub>1</sub>
C. P<sub>2</sub> = P<sub>1</sub> x P<sub>3</sub>
D. P<sub>2</sub> = P<sub>1</sub> x P<sub>3</sub>
Answer» D. P<sub>2</sub> = P<sub>1</sub> x P<sub>3</sub>
Discussion
5.

Why is multi-stage compression used?

A. To improve C.O.P.
B. To decrease the refrigeration effect
C. To increase work
D. To increase leakage loss
Answer» B. To decrease the refrigeration effect
Discussion