Thermodynamics Quiz True or False
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1.
The Carnot Cycle consists of ______________. -> Step 1: isobaric expansion, Step 2: adiabatic expansion, Step 3: isothermal compression, Step 4: adiabatic compression
True
False
2.
There is no change in the internal energy of a system during ______________. -> an isothermal expansion
True
False
3.
The highest efficiency at which a heat engine can operate is ______________. -> the Carnot efficiency
True
False
4.
In a cyclic, thermal process where the volume and pressure of the system return to their original values, ______________. -> there is no change in internal energy
True
False
5.
In which of these processes is no work done? -> An isovolumetric process
True
False
6.
The first law of thermodynamics states that ______________. -> the entropy of the universe always increases
True
False
7.
The Carnot efficiency of a heat engine depends on ______________. -> the temperature of the hot and the cold reservoirs only
True
False
8.
How much work is done during the isobaric expansion of an ideal gas, if the volume is increased from 2 × 10
-3
m
3
to 15 × 10
-3
m
3
at a pressure of 1.3 × 10
5
Pa? -> 1690 J
True
False
9.
Carnot's principle states that ______________. -> the most efficient engine is one that is reversible
True
False
10.
Two thermodynamic cycles start and end at the same pressure and volume. What can we say about these processes? -> The change in internal energy and the work done during both processes is the same.
True
False
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