railway RRB JE (CBT I + CBT II) Mock Test 2024 Power Engineering Gas and Vapor Power Cycles Brayton Cycle
Efficiency of Brayton cycle is given by [where ‘r’ is the pressure ratio, γ = specific heat ratio]
1
\(\eta = 1 - \frac{1}{{{r^{\gamma - 1}}}}\)
2
\(\eta = 1 - \frac{1}{r}\)
3
\(\eta = 1 - \frac{1}{{r^\gamma }}\)
4
\(\eta = 1 - \frac{1}{{{r^{\left( {\gamma - 1} \right)/\gamma }}}}\)