Question
Question: If the P-V diagrams of two thermodynamics devices working in a cyclic process are as shown in the fi...
If the P-V diagrams of two thermodynamics devices working in a cyclic process are as shown in the figure, then –
A
A is a heat engine, B is a heat pump/refrigerator
B
B is a heat engine, A is a heat pump/refrigerator
C
Both A and B are heat engines
D
Both A and B are heat pumps/refrigerator
Answer
A is a heat engine, B is a heat pump/refrigerator
Explanation
Solution
From A : DQ > 0, DU = 0, DW > 0
From B : DQ < 0, DU = 0, DW < 0