A heat engine works by taking in heat at a particular temperatureand A)convertin

Question

A heat engine works by taking in heat at a particular temperatureand

A)converting some of it into work andexhausting the rest at the same temperature.
B)converting some of it into work andexhausting the rest at a higher temperature.
C)converting some of it into work andexhausting the rest at a lower temperature.
D)converting it all to work.
Hint: To convert heat into work, you need at least two places withdifferent temperatures. If you take in Qhigh attemperature Thigh you must dump at least Qlowat temperature Tlow. The amount of work you getout of a heat engine is W = Qhigh -Qlow. The maximum amount of workyou can get out of a heat engine is the amount youget out of a reversible engine.

A)converting some of it into work andexhausting the rest at the same temperature.
B)converting some of it into work andexhausting the rest at a higher temperature.
C)converting some of it into work andexhausting the rest at a lower temperature.
D)converting it all to work.
Hint: To convert heat into work, you need at least two places withdifferent temperatures. If you take in Qhigh attemperature Thigh you must dump at least Qlowat temperature Tlow. The amount of work you getout of a heat engine is W = Qhigh -Qlow. The maximum amount of workyou can get out of a heat engine is the amount youget out of a reversible engine.

Explanation / Answer

A)converting some of it into work andexhausting the rest at the same temperature.
B)converting some of it into work andexhausting the rest at a higher temperature.
C)converting some of itinto work and exhausting the rest at a lowertemperature.
D)converting it all to work.
option C is correct.
Hint: To convert heat into work, you need at least two places withdifferent temperatures. If you take in Qhigh attemperature Thigh you must dump at least Qlowat temperature Tlow. The amount of work you getout of a heat engine is W = Qhigh -Qlow. The maximum amount of workyou can get out of a heat engine is the amount youget out of a reversible engine.

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