An air-standard Diesel cycle consists of the following processes:1-2: Air is compressed isentropically.2-3: Heat is added at constant pressure.3-4: Air expands isentropically to the original volume.4-1: Heat is rejected at constant volume.If γ and T denotes the specific heat ratio and temperature, respectively the efficiency of the cycle is

\(1 - \frac{{\gamma \left( {{T_4} - {T_1}} \right)}}{{{T_3} - {T_2}}}\)

\(1 - \frac{{{T_4} - {T_1}}}{{{T_3} - {T_2}}}\)

\(1 - \frac{{{T_4} - {T_1}}}{{\gamma \left( {{T_3} - {T_2}} \right)}}\)

\(1 - \frac{{{T_4} - {T_1}}}{{\left( {\gamma - 1} \right)\left( {{T_3} - {T_2}} \right)}}\)

An air-standard Diesel cycle consists of the following processes:1-2:

1.	An air-standard Diesel cycle consists of the following processes:1-2: Air is compressed isentropically.2-3: Heat is added at constant pressure.3-4: Air expands isentropically to the original volume.4-1: Heat is rejected at constant volume.If γ and T denotes the specific heat ratio and temperature, respectively the efficiency of the cycle is
A.	\(1 - \frac{{{T_4} - {T_1}}}{{{T_3} - {T_2}}}\)
B.	\(1 - \frac{{{T_4} - {T_1}}}{{\gamma \left( {{T_3} - {T_2}} \right)}}\)
C.	\(1 - \frac{{\gamma \left( {{T_4} - {T_1}} \right)}}{{{T_3} - {T_2}}}\)
D.	\(1 - \frac{{{T_4} - {T_1}}}{{\left( {\gamma - 1} \right)\left( {{T_3} - {T_2}} \right)}}\)
Answer» C. \(1 - \frac{{\gamma \left( {{T_4} - {T_1}} \right)}}{{{T_3} - {T_2}}}\)

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