Engineering Board Exam Reviewer · Thermodynamics · medium
Air at 300 K is compressed isentropically with a pressure ratio of 8. What is the final temperature? (k = 1.4)
- 2400.0 K
- 689.2 K
- 1324.9 K
- 543.4 K
Answer
D. 543.4 K
Solution
T2 = T1(P2/P1)(k-1)/k = 300(8)0.4/1.4 = 543.4 K.
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