Question:-
Consider the following statements:
A decrease in evaporator temperature of a vapour compression machine load to
1. An increases in refrigerating effect
2. An increases in specific volume of vapour
3. A decreases in volumetric efficiency of compressor
4. An increases in compressor work.
Of these statements
Option (A)
1, 3 and 4 are correct
Option (B)
1, 2 and 3 are correct
Option(C)
2, 3 and 4 are correct
Option(D)
2 and 4 are correct
Correct Option:
(C)
Question Solution:

When evaporator temperature decreases from T1 to T2 as shown in figure Refrigerating effect almost constant and compressor work increases
question-answer-faq-2844