Question: 6 . A power cycle operates between hot and cold thermal reservoirs at 2 0 0 0 8 F and l 0 0 0 8

6. A power cycle operates between hot and cold thermal
reservoirs at 20008F and l0008F, respectively. If the thermal
efficiency of the power cycle were 45%, its mode of operation
(a) is reversible, (b) is irreversible, (c) is impossible, (d) cannot
be determined with the data provided.

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