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Class 11 Physics Practice Test: Thermodynamics - Heat Engines
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Avg score: 79% • Most missed: “If an engine takes 5J of heat energy from a reservoir and rejects 3J to the surr…”

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. If an engine takes 5J of heat energy from a reservoir and rejects 3J to the surroundings, what is its efficiency?
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. In a heat engine heat is converted to work and the process need not be cyclic. True or False?

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