A Steam Power Plant with an Efficiency of 65% of the Maximum

question 20

Multiple Choice

A steam power plant with an efficiency of 65% of the maximum thermodynamic efficiency operates between 250^oC and 40^oC. What is the change in the entropy of the universe when this plant does 1.0 kJ of work?

• A) 16 J/K
• B) 1.7 J/K
• C) 55 J/K
• D) 1.7 mJ/K
• E) 0.85 J/K

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