A Carnot engine operates at 55% efficiency. If the temperature of reject steam is $105^{\circ}\mathrm{C}$, then the absolute temperature of input steam is ____
Answer
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.
Explanation
Answer: ≈ 840 K — η = 1 − Tc/Th, so Th = 378.15/0.45 = 840.3 K.