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Unformatted text preview: Version 001 HW30 gavrin (25111) 1 This print-out should have 11 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. Temperature Increase 001 10.0 points The efficiency of a 679 MW nuclear power plant is 47 . 1%. If a river of flow rate 2 . 84 10 6 kg / s were used to transport the excess thermal energy away, what would be the average temperature increase of the river? Correct answer: 0 . 0641486 C. Hot Reservoir Temperature 002 10.0 points A Carnot engine has an efficiency of 26 . 4% when the hot reservoir temperature is 574 C. If we want to improve the efficiency to 12 . 7%, what should be the temperature of the hot reservoir, assuming everything else remains unchanged? Correct answer: C. Compressor Energy 003 10.0 points A mass of 3 . 7 kg of chilled water at 0 C is placed in a freezer which is kept at- 14 . 6 C....
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