Question 1) Which one of the following statements is true? A) A turbine produces

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Question

1) Which one of the following statements is true?

A) A turbine produces its maximum power when operated reversibly; a compressorconsumes its minimum power when operated reversibly.

B) A turbine produces its minimum power when operated reversibly; a compressorconsumes its minimum power when operated reversibly.

C) A turbine produces its maximum power when operated reversibly; a compressorconsumes its maximum power when operated reversibly.

D) A turbine produces its minimum power when operated reversibly; a compressorconsumes its maximum power when operated reversibly.

2) How many of the following statements are true?

Which one of the following statements is true? How many of the following statements are true? Which one of the following statements is not a rationale for considering whether a process is reversible? What are the differences between the Carnot cycle, the Stirling cycle, and the Ericsson cycle? A simple ideal Brayton cycle with air as the working fluid has a pressure ratio of 10. The air enters the compressor at 300K and the turbine at 1200 K. Accounting for variation of specific heats with temperature, determine:

Explanation / Answer

1.A) A turbine produces its maximum power when operated reversibly; a compressorconsumes its minimum power when operated reversibly.

2. all are true

3. Reversibility sets the lower bound for the change in entropy or rate of change in entropy for the universe for the process.

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