An engine operates by taking n moles of an ideal gas through the cycle. ABCDA shown in figure. The thermal efficiency of the engine is : (Take $C_{v} = 1.5 R$ , where R is gas constant)

Question

An engine operates by taking n moles of an ideal gas through the cycle. ABCDA shown in figure. The thermal efficiency of the engine is : (Take C v ​ = 1.5 R , where R is gas constant)

TestHub · Accepted Answer

Δ W = P 0 ​ V 0 ​ Δ Q supplied ​ = n × 2 3 R ​ [ n R 2 P 0 ​ V 0 ​ ​ − n R P 0 ​ V 0 ​ ​ ] + n × 2 5 R ​ [ n R 4 P 0 ​ V 0 ​ ​ − n R 2 P 0 ​ V 0 ​ ​ ] Δ Q S ​ = 2 3 ​ P 0 ​ V 0 ​ + 5 P 0 ​ V 0 ​ = 2 13 ​ P 0 ​ V 0 ​ η = 13 P 0 ​ V 0 ​ P 0 ​ V 0 ​ × 2 ​ × 100

Physics - Heat & Thermo Question with Solution | TestHub

Options:

Doubts & Discussion