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Questions and Answers
What is the main concept behind the principle of degradation of energy?
What is the main concept behind the principle of degradation of energy?
- The total energy available in a system
- The minimum useful work possible during a process
- The maximum useful work possible during a process (correct)
- The constant entropy of a system
Which statement accurately describes the concept of exergy?
Which statement accurately describes the concept of exergy?
- Exergy is the energy available to do work (correct)
- Exergy is the unused heat in a system
- Exergy is the total energy in a system
- Exergy is the energy that cannot be used
What happens to the exergy of a system and surroundings once they reach equilibrium?
What happens to the exergy of a system and surroundings once they reach equilibrium?
- The exergy becomes infinite
- The exergy remains constant
- The exergy increases
- The exergy decreases (correct)
In the context of exergy calculation, what does dividing each heat transfer by the absolute temperature of the thermal reservoir help determine?
In the context of exergy calculation, what does dividing each heat transfer by the absolute temperature of the thermal reservoir help determine?
What did Rudolph Clausius outline in the 19th century regarding heat transfer and temperature?
What did Rudolph Clausius outline in the 19th century regarding heat transfer and temperature?
What is the SEER a measure of?
What is the SEER a measure of?
Which unit is used for both EER and SEER?
Which unit is used for both EER and SEER?
In a reversible process, what does not increase?
In a reversible process, what does not increase?
What characterizes an irreversible process?
What characterizes an irreversible process?
What type of process is internally reversible?
What type of process is internally reversible?
What is the relation between EER (or SEER) and Coefficient of Performance (COP) for a device with COP = 1?
What is the relation between EER (or SEER) and Coefficient of Performance (COP) for a device with COP = 1?
What is the key difference between an isolated system and an ideal process?
What is the key difference between an isolated system and an ideal process?
Which term is synonymous with exergy?
Which term is synonymous with exergy?
How is exergy defined in the context of thermodynamics?
How is exergy defined in the context of thermodynamics?
Why does the exergy of a system decrease as it performs work?
Why does the exergy of a system decrease as it performs work?
What factor determines the exergy of a system in relation to its reference state?
What factor determines the exergy of a system in relation to its reference state?
Which principle states that in all real processes, entropy increases?
Which principle states that in all real processes, entropy increases?
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