An electric motor uses 670 kJ of electrical energy to generate 595 kJ of mechanical kinetic energy. What is the efficiency of the motor?
Full example, please...
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ANSWER(S)
answered: hfroslie6411
16.07.2019 23:00
If the heat engine is a perfect carnot cycle engine, thenefficiency = (t2-t1)/t2 where t1=temperature of cold reservoir ( ° k) = 135 t2=temperature of hot reservoir ( ° k) = 325thereforeefficiency = (t2-t1)/t2 = (325-135)/325 = 0.5846 = 58% note: this is the theoretical maximum efficiency of a perfect heat engine. real-life engines do not achieve this value.
answered: annapittbull12
12.07.2019 19:20
Sorry i don’t know what to do
answered: bellapearl163
11.07.2019 16:30
The answer is 12, for the points
answered: jdiffenbaugh115
25.01.2022 14:10
Used energy=595KJTotal energy=670KJ
Efficiency:-
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