Q16 An engine working on the Otto cycle has an air standard efficiency of(56%) and rejects (544 Kj/Kg) of air. The pressure and temperature of air at thebeginning of compression are (0.1 MPa) and (60 °C) respectively. Compute (a) thecompression ratio of the engine (b) the work done per kg of air (c) the pressure andtemperature at the end of compression and (d) the maximum pressure in the cycle.Answers: (a) 7.79 (b) 692.36 Kj/Kg (c) 1770.7 KN/m², 756.9 K (d) 5798.93 KN/m²

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Answered: Q16 An engine working on the Otto cycle…

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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An air-standard dual cycle has a compression ratio of 9.1 and displacement of Va = 2.2 L. At the beginning of compression, p1= 95 kPa, and T1 = 290 K. The heat addition is 5 kJ, with one quarter added at constant volume and the rest added at constant pressure. Determine: a) each of the unknown temperatures at the various states, in K. b) the net work of the cycle, in kJ. c) the power developed at 3000 cycles per minute, in kW. d) the thermal efficiency. e) the mean effective pressure, in kPa. Step 1 Your answer is partially correct. Determine each of the unknown temperatures at the various states, in K. T2 = i 701.478 K T3 = i 1318.594 K T4 = i 2641.249 K T5 = 1440.8 K

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