A heat engine absorbs 20 kJ of heat from a source at 500°C and rejects 10 kJ of heat to a sink at 25°C. Themaximum efficiency of the heat engine is?61%O 95%O 50% Choose all that apply. A heat engine is a device that...Rejects waste heat to a low temperature sink.Operates on a cycle.Converts heat into work.Receives heat from a high temperature source.

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A heat engine absorbs 20 kJ of heat from a source at 500°C and rejects 10 kJ of heat to a sink at 25°C. The maximum efficiency of the heat engine is? 61% O 95% 50%

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

A heat engine absorbs 20 kJ of heat from a source at 500°C and rejects 10 kJ of heat to a sink at 25°C. The
maximum efficiency of the heat engine is?
61%
O 95%
O 50%

Choose all that apply. A heat engine is a device that...
Rejects waste heat to a low temperature sink.
Operates on a cycle.
Converts heat into work.
Receives heat from a high temperature source.

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A heat engine is operating on a Carnot cycle and has a thermal efficiency of 55 percent. The waste heat from this engine is rejected to a nearby lake at 60°C at a rate of 900 kJ/min. Determine the temperature of the source.