Thermodynamic cycles

The total energy of a system equals 

• its heat and temperature
• its work and temperature
• its heat and work
• its heat

A thermodynamic cycle which uses heat exchange to create work is called ...

• a heat reservoir
• a heat pump
• a perpetual motion machine
• a heat engine

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Cycle efficiency is defined as ...

• 1 - Q_c/Q_h
• the amount of work added 
• the amount of heat added - amount of heat removed
• the amount of heat added

The ideal thermodynamic cycle is called 

• the Crovener cycle
• the Carnot cycle
• the Nitrogen cycle
• the Somenoc cycle

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The work available in a Carnot cycle is equal to 

• the area under the high temperature curve
• the area under the low temperature curve
• the area above the low temperature curve and below the high temperature curve

All processes in a Carnot cycle must be reversible. As a result, a Carnot engine must operate ... 

• at a low temperature
• very slowly
• at high temperature
• both forward and backward

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Temperature is a measure of the...

• total energy in a substance
• total kinetic energy in a substance
• average potential energy in a substance
• average kinetic energy of molecules in a substance

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The transfer of thermal energy between objects of different temperatures is called...

• temperature
• heat
• internal energy
• none of these

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When thermal energy is added to a substance, the substance's particles move:

• More rapidly at an increased diestance from each other.
• More rapidly with less distance between each other.
• More slowly with a greater distance between each other.
• More slowly with a reduced distance between each other.

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A system absorbs 100 J of heat and does 200 J of work on a piston. What is the change in internal energy?

• -100 J

• -300 J

• 100 J

• 300 J

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