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The Department of Energy Develops a New Reversible Engine Which

Question 20

Multiple Choice

The Department of Energy develops a new reversible engine which has a COP of 4 when operated as a refrigerator and a COP of 5 when operated as a heat pump. What is its efficiency when operated as an engine doing work?


A) 45.%
B) 20.%
C) 80.%
D) 10.%
E) 25.%

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