A 2.50kw electric motor operate a crane which is able to lift a body of mass 50.0kg at the rat of 4.00m/s.calculate the efficiency of the system and the wasted power(take g=10ms_2.?
Oghenemudaikevwe
5 Apr, 2021
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VTPETERS2002
5 years ago
For an electrical power conversion process, efficiency is measured simply by dividing the output power in watts by the input power in watts and is expressed as a percentage. In power electronics, the Greek letter eta (η) is used to represent efficiency.
P = mgh/t = mgv
P = 50*10*4 = 2000w
2.5kw = 2500w
Efficiency = 2000/2500*100 = 80%
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