7. A heat engine cycle consists of a closed cycle subdividedinto four legs with the heat transfer for each leg as follows:Q-2 = 4.0 kJ, Q̟= 12 kJ, Q, = -5.0 kJ, and Q = -7.0 kJ.Find the efficiency of the engine.2-33-44-1а. 65%b. 55%с. 45%d. 35%е. 25%

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7. A heat engine cycle consists of a closed cycle subdivided into four legs with the heat transfer for each leg as follows: Q- = 4.0 kJ, Q,-= 12 kJ, Q, = -5.0 kJ, and Q. = -7.0 kJ. Find the efficiency of the engine. a, 65%

7. A heat engine cycle consists of a closed cycle subdivided into four legs with the heat transfer for each leg as follows: Q- = 4.0 kJ, Q,-= 12 kJ, Q, = -5.0 kJ, and Q. = -7.0 kJ. Find the efficiency of the engine. a, 65%

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter22: Heat Engines, Entropy, And The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 22.58AP

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Question

7. A heat engine cycle consists of a closed cycle subdivided
into four legs with the heat transfer for each leg as follows:
Q-2 = 4.0 kJ, Q̟= 12 kJ, Q, = -5.0 kJ, and Q = -7.0 kJ.
Find the efficiency of the engine.
2-3
3-4
4-1
а. 65%
b. 55%
с. 45%
d. 35%
е. 25%

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