GATE Mechanical 2014 Set 2 | Question: 13

Question

The thermal efficiency of an air-standard Brayton cycle in terms of pressure ratio $r_p$ and $\gamma (= c_p /c_v)$ is given by

• A. $1-\dfrac{1}{{r_p}^{\gamma -1}} \\$
• B. $1-\dfrac{1}{{r_p}^{\gamma }} \\$
• C. $1-\dfrac{1}{{r_p}^{1/\gamma }} \\$
• D. $1-\dfrac{1}{{r_p}^{(\gamma -1)/\gamma }}$