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Questions and Answers
What does the coefficient of performance (COP) express?
What does the coefficient of performance (COP) express?
- The ratio of energy supplied to energy consumed
- The ratio of desired effect produced to the energy supplied (correct)
- The efficiency of an engine in generating power
- The total energy input of a refrigeration cycle
In the context of a heat pump, what does COP measure?
In the context of a heat pump, what does COP measure?
- The cooling effect produced
- The ratio of heating effect produced to the energy input (correct)
- The energy loss during heating
- The efficiency of the refrigeration cycle
What is the main difference between COP and the efficiency of an engine?
What is the main difference between COP and the efficiency of an engine?
- COP can be higher than unity, while engine efficiency cannot (correct)
- Both COP and efficiency have the same definition
- COP measures energy output only
- COP directly indicates energy input
How is the actual coefficient of performance obtained during a test?
How is the actual coefficient of performance obtained during a test?
What does the term 'relative COP' refer to?
What does the term 'relative COP' refer to?
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