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11. An Otto cycle having a compression ratio of 8:1 uses air as the working fluid. The temperature at the start of the compression is 16 °C. Determine the temperature at the start of heat addition. а. 391 °C b. 36.75 °C с. 78°С d. 506 765 °K

11. An Otto cycle having a compression ratio of 8:1 uses air as the working fluid. The temperature at the start of the compression is 16 °C. Determine the temperature at the start of heat addition. а. 391 °C b. 36.75 °C с. 78°С d. 506 765 °K

Elements Of Electromagnetics
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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Question

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solution. (Otto Cycle)

 

V. Air Standard/Gas Power Cycle Otto Cycle 1-2: Isentropic compression 2-3: constant volume heat addition 3-4: Isentropic Expansion 4-1: Constant volume heat rejection 3 Qin W out W out Qin Qout Win t Qout V - V, $1= 52 Innovation Discoveries P-V and T-S Diagram of Otto Cycle Figure 5 3. 2. 2.
Transcribed Image Text:V. Air Standard/Gas Power Cycle Otto Cycle 1-2: Isentropic compression 2-3: constant volume heat addition 3-4: Isentropic Expansion 4-1: Constant volume heat rejection 3 Qin W out W out Qin Qout Win t Qout V - V, $1= 52 Innovation Discoveries P-V and T-S Diagram of Otto Cycle Figure 5 3. 2. 2.
11. An Otto cycle having a compression ratio of 8:1 uses air as the working fluid. The temperature at the start of the compression is 16 °C. Determine the temperature at the start of heat addition. а. 391 °C b. 36.75 °C с. 78 °C d. 506.765 °K 12. An Otto cycle has a compression ratio of 5:1. Find the efficiency of the cycle. (kair = 1.4) а. 30.135 % b. 47.5 % с. 45.7% d. 31.035% 13. An Otto cycle has a compression ratio of 7.5. Determine the volume at the end of expansion if the volume at the beginning of compression is 0.6 m³. а. 21 ft3 b. 4.5 m3 c. 15 ft3 d. 5.4 m3
Transcribed Image Text:11. An Otto cycle having a compression ratio of 8:1 uses air as the working fluid. The temperature at the start of the compression is 16 °C. Determine the temperature at the start of heat addition. а. 391 °C b. 36.75 °C с. 78 °C d. 506.765 °K 12. An Otto cycle has a compression ratio of 5:1. Find the efficiency of the cycle. (kair = 1.4) а. 30.135 % b. 47.5 % с. 45.7% d. 31.035% 13. An Otto cycle has a compression ratio of 7.5. Determine the volume at the end of expansion if the volume at the beginning of compression is 0.6 m³. а. 21 ft3 b. 4.5 m3 c. 15 ft3 d. 5.4 m3
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