Choice the correct one Please answer at least 4,5,6,7Need urgent answerm will upvote 4. Which of the following formulas can be used to evaluate the thermal efficiency of areversible heat engine?(A) na Wnet.out/QH; (B) 7-1-Q₁/QH; (C) -1-T₁/TH; (D) 7h-Wnet,out/(Wnet,out +QL); (E) All of the above5. Which of the following formulas can be used to evaluate the COP of a reversible heatpump?(A) COPHP- QH/Wnet,in; (B) COPHP-1/(1- Q/QH); (C) COPHP-1/(1- T₁/TH); (D)COPHP COPR + 1; (E) All of the above6. A piston-cylinder device contains nitrogen gas. During a reversible, adiabatic process,the entropy of the nitrogen willincrease.(A) never; (B) sometimes; (C) always7. The entropy of the working fluid of the ideal Carnot cycle_heat addition process.(A) increases; (B) decreases (C) remains the same8. During a heat transfer process, the entropy of a system(A) always; (B) sometimes; (C) neverduring the isothermalincrease?

4. Which of the following formulas can be used to evaluate the thermal efficiency of a reversible heat engine? (A) 7th-Wnet.out/QH; (B) 7-1-Q₁/QH; (C) -1-T₁/TH; (D) -Wnet,out/(Wnet,out + Qt); (E) All of the above 5. Which of the following formulas can be used to evaluate the COP of a reversible heat pump? (A) COPHP- QH/Wnet.in; (B) COPHP-1/(1- Q/QH); (C) COPHP-1/(1- T1/TH); (D) COPHP COPR + 1; (E) All of the above 6. A piston-cylinder device contains nitrogen gas. During a reversible, adiabatic process, the entropy of the nitrogen will increase. (A) never; (B) sometimes; (C) always 7. The entropy of the working fluid of the ideal Carnot cycle_ during the isothermal heat addition process. (A) increases; (B) decreases (C) remains the same 8. During a heat transfer process, the entropy of a system (A) always; (B) sometimes; (C) never increase?

4. Which of the following formulas can be used to evaluate the thermal efficiency of a reversible heat engine? (A) 7th-Wnet.out/QH; (B) 7-1-Q₁/QH; (C) -1-T₁/TH; (D) -Wnet,out/(Wnet,out + Qt); (E) All of the above 5. Which of the following formulas can be used to evaluate the COP of a reversible heat pump? (A) COPHP- QH/Wnet.in; (B) COPHP-1/(1- Q/QH); (C) COPHP-1/(1- T1/TH); (D) COPHP COPR + 1; (E) All of the above 6. A piston-cylinder device contains nitrogen gas. During a reversible, adiabatic process, the entropy of the nitrogen will increase. (A) never; (B) sometimes; (C) always 7. The entropy of the working fluid of the ideal Carnot cycle_ during the isothermal heat addition process. (A) increases; (B) decreases (C) remains the same 8. During a heat transfer process, the entropy of a system (A) always; (B) sometimes; (C) never increase?

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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