Apower cycle operating at steady state receives energy by heat transfer at a rate q # h at th 1800 k and rejects energy by heat transfer to a cold reservoir at a rate q # c at tc 5 600 k. for each of the following cases, determine whether the cycle operates reversibly, operates irreversibly, or is impossible. (a) q # h 500 kw, q # c 100 kw (b) q # h 500 kw, w # cycle 250 kw, q # c 200 kw (c) w # cycle 350 kw, q # c 150 kw (d) q # h 500 kw, q # c 200 kw