The efficiency of a heat engine is 40%. If 10,000 joules of heat energy are supplied to it, then the useful work done by the engine would be-
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Efficiency = (work out ÷ work in) × 100%
Work in = 10000Joules
Efficiency = 40%
Work out =?
40/100= 0.40
0.40 = (Work out) ÷ 10000
Work out = 10000 × 0.4= 4000Joules
Work done by the engine = Work out put = Work out =4000joules.
Answer = 4000 Joules.
Work in = 10000Joules
Efficiency = 40%
Work out =?
40/100= 0.40
0.40 = (Work out) ÷ 10000
Work out = 10000 × 0.4= 4000Joules
Work done by the engine = Work out put = Work out =4000joules.
Answer = 4000 Joules.
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