試題詳解

5. Consider a heat engine operating in a closed cycle, as illustrated in Figure 4. The cycle begins at initial state i and involves a irreversible process leading to final state f, followed by an reversible process returning the system from state f back to i Choose the correct description from the following options, based on this cycle that commences from state i:

(A)
(B)
(C) In the entire cycle i →  f →i  the cyclic integral
(D) the integral
(E) In the process from i to f, the system releases heat.