please answer 7)[10 pts] Choose the best answer for each question: The specific

Question

please answer

7)[10 pts] Choose the best answer for each question: The specific entropy ofa substance is a function of a) temperature b) pressure c) mass d) volume e) all of the above A and B g) A, B and C h) A, B and D For an open system, the change in enthalpy of a substance equal to the net work and heat transfer into or out of the system? a) True b) False The Carnot cycle efficiency is a function of... a) The heat input and work output of the cycle b) The heat input and heat rejected from the cycle c) A or B d) The maximum temperature of the cycle e) The difference between the maximum and minimum temperature of the cycle In an ideal Brayton cycle, the work input of the compressor always must be to the work output of the turbine. a) Greater b) Equal c) Less than d) A or B e) B or C A or B or C In general Rankine cycles are more efficient than Brayton cycles because they operate at higher maximum temperatures? a) True b) False

Explanation / Answer

1. (f) A and B

2. (a) True

3. (d) Max and min temperature

4. less than the

5. True

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