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Class 11 Physics Practice Test: Thermodynamics - Heat Engines
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In thermodynamics and engineering, a heat engine is a system that converts heat to usable energy, particularly mechanical energy, which can then be used to do mechanical work.

Class 11 Physics Practice Test: Thermodynamics - Heat Engines
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3 Questions

1. An engine works between 2 reservoirs of temperature 500K and 300K. A company claims that this engine of theirs takes 200J of energy from the hot reservoir and rejects 110J of energy. Is this True or False?
2. An engine works between 2 reservoirs of temperature 500K and 300K. A company claims that this engine of theirs takes 200J of energy from the hot reservoir and rejects 110J of energy. Is this True or False?
3. If an engine takes 5J of heat energy from a reservoir and rejects 3J to the surroundings, what is its efficiency?

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