answer 83-85 **Thermodynamic Keys**Questions 81-85 are based on the stated information below. The air temperature in a piston-cylinder at the beginning of an adiabatic compression process for an ideal air standard cycle with a compression ratio of 18 is 300 K; the pressure is 0.1 MPa. Heat addition occurs next during a constant pressure process that raises the temperature to the top dead center of 1800 K. The next process in the cycle is an adiabatic expansion which is followed by a constant volume cooling process to complete the cycle.| State | P (MPa) | T (K) | u (kJ/kg) | h (kJ/kg) ||-------|---------|--------|-----------|-----------|| 1 | 0.10 | 300.0 | 214.07 | 300.1 || 2 | 5.39 | 898.3 | 672.4 | 930.2 || 3 | 5.39 | 1800.0 | 1487.2 | 2003.2 || 4 | 0.30 | 887.7 | 664.3 | 919.2 |**81. The compression work input in kJ/kg is:**a. 266.3 b. 458.3 c. 814.8 d. none of the above.**82. The thermal energy input in kJ/kg is:**a. 630.1 b. 824.8 c. 1073.0 d. none of the above.**83. The cycle expansion work output in kJ/kg is:**a. 267.2 b. 814.8 c. 1081.1 d. none of the above.**84. The thermal energy output in kJ/kg is:**a. 450.2 b. 619.1 c. 814.8 d. none of the above.**85. The thermal efficiency of the cycle is:**a. 32% b. 42% c. 58% d. none of the above.**Diagram Explanation:**The image appears to include a thermodynamic cycle diagram, likely a Brayton

Answered: Image /qna-images/answer/a66c0508-1591-495f-ba32-a31b94a5a9eb.jpg

d. none of the above. 83. The cycle expansion work output in kJ/kg is a. 267.2 b. 814.8 c. 1081.1 d. none of the above. 84. The thermal energy output in k.J/kg is a. 450.2 b. 619.1 e. 814.8 d. none of the above. 85. The thermal efficiency of the cycle is a. 33% b. 42% e. 58% d. none of the above. Q +

d. none of the above. 83. The cycle expansion work output in kJ/kg is a. 267.2 b. 814.8 c. 1081.1 d. none of the above. 84. The thermal energy output in k.J/kg is a. 450.2 b. 619.1 e. 814.8 d. none of the above. 85. The thermal efficiency of the cycle is a. 33% b. 42% e. 58% d. none of the above. Q +

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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