A frictionless heat engine can be 100 percent efficient only if its ex

1.	A frictionless heat engine can be 100 percent efficient only if its exhaust temperature is
A.	Equal to its input temperature
B.	Less than input temperature
C.	0 K
D.	0°C
Answer» D. 0°C

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A frictionless heat engine can be 100 percent efficient only if its exhaust temperature is

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