Multiple choice

The thermal efficiency of an air-standard Brayton cycle in terms of pressure ratio rp and y(= cp/cv) is given by

  1. $1 - \frac{1}{r_p^{y-1}}$
  2. $1 - \frac{1}{r_p^{y}}$
  3. $1 - \frac{1}{r_p^{1/y}}$
  4. $1 - \frac{1}{r_p^{(\lambda - 1)/y}}$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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