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24. The efficiency of a Carnot engine is 35%. What is the temperature of the cold reservoir if the temperature of the hot reservoir is 500K?

24. The efficiency of a Carnot engine is 35%. What is the temperature of the cold reservoir if the temperature of the hot reservoir is 500K?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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22. A heat engine has an efficiency of 35% and receives 150J of heat per cycle. How much work does it perform in each cycle? a) 0 b)52.5J c) 97.5J d) 150J 23. What is the Carnot efficiency of an engine which operates between 430K and 300K? a) 30% b) 40% c) 60% d) 70% 24. The efficiency of a Carnot engine is 35%. What is the temperature of the cold reservoir if the temperature of the hot reservoir is 500K? a) 175K b) 325K c) 269K d) 231K 25. A refrigerator removes heat from the freezing compartment at the rate of 20kJ and ejects 24kJ into a room per cycle. How much work is required in each cycle? a) 4kJ b) 20kJ c) 24kJ d) 44kJ 26. State the 1st Law of Thermodynamics (in words.not the equation!)
Transcribed Image Text:22. A heat engine has an efficiency of 35% and receives 150J of heat per cycle. How much work does it perform in each cycle? a) 0 b)52.5J c) 97.5J d) 150J 23. What is the Carnot efficiency of an engine which operates between 430K and 300K? a) 30% b) 40% c) 60% d) 70% 24. The efficiency of a Carnot engine is 35%. What is the temperature of the cold reservoir if the temperature of the hot reservoir is 500K? a) 175K b) 325K c) 269K d) 231K 25. A refrigerator removes heat from the freezing compartment at the rate of 20kJ and ejects 24kJ into a room per cycle. How much work is required in each cycle? a) 4kJ b) 20kJ c) 24kJ d) 44kJ 26. State the 1st Law of Thermodynamics (in words.not the equation!)
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