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An ideal Brayton cycle, operating between the pressure limits of 1 bar and 6 bar, has minimum and maximum temperatures of 300 K and 1500 K. The ratio of specific heats of the working fluid is 1.4. The approximate final temperature in Kelvin at the end of the compression and expansion processes are respectively
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- 500 and 900
- 900 and 500
- 500 and 5400
- 900 and 900
Correct Option: A
Ideal Brayton cycle, 
At the end of compression,
| Temperature, T2 = T1 |  |  | γ - 1 /γ | |
| T4 |
= 300 × 60.4/1.4 = 500 K
At the end of expansion;
| Temperature, T4 = | |||
| | γ-1/γ | |
| P4 | |||
| = | ||
| 60.4/1.4 |
= 900K
