0 0 votes 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 $1-\dfrac{1}{{r_p}^{\gamma -1}} \\$ $1-\dfrac{1}{{r_p}^{\gamma }} \\$ $1-\dfrac{1}{{r_p}^{1/\gamma }} \\$ $1-\dfrac{1}{{r_p}^{(\gamma -1)/\gamma }}$ Heat Transfer gateme-2014-set2 fluid-mechanics-and-thermal-science heat-transfer + – ♦Arjun 282 views answer comment Share Follow Add Sync Questions 0 reply Please log in or register to add a comment.