Chapter 20, Problem 59E

(a)

To determine

The changes in entropy of the gas in each of the constant -volume process $b\to c$ and $d\to a$ of the Otto cycle in terms of the temperatures $T_a$, $T_b$, $T_c$, $T_d$ and the number of moles and the heat capacity of the gas.

(b)

To determine

The total entropy change in the engine during one cycle.

(c)

To determine

To show: The answer of part (b) is reconciled with the irreversibility of processes $b\to c$ and $d\to a$.