provide a brief explanation for each. thumbs up if completed 12. A Carnot engine, operating between 70°F and 2000°F, is modified by raising the high temperature to2150°F, and raising the low temperature by 100°F. Which of the following statements is incorrect?a. more heat is absorbed during vaporizationb. more work is done during the reversible adiabatic expansionc. net work is increasedd. thermodynamic efficiency is decreased13. The efficiency of regenerative Stirling cycle is the efficiency of Carnot cycle.a. more thanc. less thanb. equal tod. none of the mentioned14. Adiabatic compression of a saturated water vapor makes itc. both (a) and (b)a. subcooledb. superheatedFor numbers 22 to 23:Two reversible engines R₁ and R₂ are connected ins series between a heat source S and a cold bodyC. If T₁ = 1000 R, T₂ = 400 R, QH = 400 BTU and the engines have equal thermal efficiencies,determined. neither (a) nor (b)22. The temperature at which heat is rejected by R₁ and received by R₂a. 486 Rc. 750 Rd. 632 Rb. 512 R23. The heat rejected to the cold bodya.-160 BTUb. -147.2 BTU24. When does a vapor become superheated?a. when the temperature of vapor is less than the saturation temperature at given pressureb. when the temperature of vapor is more than the saturation temperature at given pressurec. when the temperature of vapor is equal to the saturation temperature at given pressured. none of these25. Which of the following statement is correct?C.-93 BTUd. -86 BTUa. COP of heat pump isgreater than the cop ofa refrigerator by 2b. COP of heat pump isgreater than the cop ofa refrigerator by 1c. COP of refrigeratorgreater than the cop ofa heat pump by 2d. COP of refrigeratorgreater than the cop ofa heat pump by 1Problem Part:1. An ideal Diesel cycle operates with a compression ratio of 14. The compression process beginswith air at OoF and 15 psia. The maximum temperature in the cycle is 35400F. Determine the cyclethermal efficiency.2.An ideal Brayton or gas turbine cycle with air as the working medium operates between pressureof 15 psi and 90 lb. The compressor inlet temperature is 700F and the turbine inlet temperature is1240 oF. Determine the thermal efficiency.

Answered: Image /qna-images/answer/090b0767-bc2b-43e7-bd80-ee22fa8527fe.jpg

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

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

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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