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Mastery Quiz
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1

A heat engine
A)converts all the heat supplied to it to mechanical work
B)always rejects some heat to a lower temperature reservoir
C)only needs one reservoir to operate
2

The efficiency of a heat engine is given by
A)W/QH
B)W/QL
C)QH/Q
D)QH/W
3

In an adiabatic process
A)temperature is constant
B)pressure is constant
C)heat only flows into the system
D)no heat flows into or out of the system
E)heat only flows out of the system
4

The most efficient engine operating between two temperatures is a(n) engine.
5

In calculating the efficiency of a Carnot engine the temperatures used must be expressed using the scale.
6

The Kelvin form of the second law of thermodynamics states that
A)an engine can take heat from a single reservoir and convert it all to work
B)no engine can take heat from a single reservoir and convert it all to work
C)an engine can have a greater efficiency than a Carnot engine
7

The Clausius form of the second law of thermodynamics states that
A)it is impossible to make heat flow from a colder to a hotter body
B)heat naturally flows from a colder to a hotter body
C)heat will not flow from a colder to a hotter body unless some other effect is involved
8

The entropy of the universe
A)is always decreasing
B)is conserved
C)is impossible to calculate
D)can only increase or remain constant
9

A perpetual motion machine of the first kind
A)violates the first law of thermodynamics
B)would be a good investment
C)violates the second law of thermodynamics
D)violates the zeroth law of thermodynamics
10

A perpetual motion machine of the second kind
A)violates the first law of thermodynamics
B)would be a good investment
C)violates the second law of thermodynamics
D)violates the zeroth law of thermodynamics





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