engineering recuitment BEL Probationary Engineers Mock Test 2025 Internal Combustion Engine IC Engine Cycles Dual Cycle
दोहरे चक्र की दक्षता को किस रूप में परिभाषित किया जाता है?
1
\(\eta = 1 - \frac{1}{{{{\left( r \right)}^{\frac{{\gamma - 1}}{\gamma }}}}}\)
2
\(\eta = 1 - \frac{1}{{{{\left( r \right)}^{\gamma - 1}}}}\frac{{\alpha ({\rho ^\gamma } - 1)}}{{\gamma \left( {\rho - 1} \right)\alpha + \left( {\alpha - 1} \right)}}\)
3
\(\eta = 1 - \frac{1}{{{{\left( r \right)}^{\gamma - 1}}}}\frac{{{\rho ^\gamma } - 1}}{{\gamma \left( {\rho - 1} \right)}}\)
4
\(\eta = 1 - \frac{1}{{{{\left( r \right)}^{\gamma - 1}}}}\frac{{\alpha {\rho ^\gamma } - 1}}{{\gamma \left( {\rho - 1} \right)\alpha + \left( {\alpha - 1} \right)}}\)