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In each cycle of its operation, a heat engine expels 4,000 J of energy and performs 2,000 J of mechanical work?
In each cycle of its operation, a heat engine expels 4,000 J of energy and performs 2,000 J of mechanical work.
(a) How much thermal energy must be added to the engine in each cycle?
(b) Find the thermal efficiency of the engine.
1 Answer
- Anonymous8 months agoFavorite Answer
(a) 2000J + 4000J = 6000J must be input to the engine each cycle.
(b) η (efficiency) = (energy in – energy out)/(energy in) x 100% = (6000 – 4000)/6000 x 100 % = 331/3%.