12. A Carnot engine, operating between 70°F and 2000°F, is modified by raising the high temperature to 2150°F, and raising the low temperature by 100°F. Which of the following statements is incorrect? a. more heat is absorbed during vaporization b. more work is done during the reversible adiabatic expansion c. net work is increased d. thermodynamic efficiency is decreased 13. The efficiency of regenerative Stirling cycle is the efficiency of Carnot cycle. a. more than c. less than b. equal to d. none of the mentioned 14. Adiabatic compression of a saturated water vapor makes it c. both (a) and (b) a. subcooled b. superheated d. neither (a) nor (b)

12. A Carnot engine, operating between 70°F and 2000°F, is modified by raising the high temperature to 2150°F, and raising the low temperature by 100°F. Which of the following statements is incorrect? a. more heat is absorbed during vaporization b. more work is done during the reversible adiabatic expansion c. net work is increased d. thermodynamic efficiency is decreased 13. The efficiency of regenerative Stirling cycle is the efficiency of Carnot cycle. a. more than c. less than b. equal to d. none of the mentioned 14. Adiabatic compression of a saturated water vapor makes it c. both (a) and (b) a. subcooled b. superheated d. neither (a) nor (b)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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In a regenerative cycle the inlet conditions are 40 bar and 400°C steam is bled at 10 bar in regenerative heating. The exit pressure is 0.8 bar. Neglecting pumpwork determine the efficiency of the cycle.
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