Calculate the output power of a dc-motor which draws 100 amps when it is connected to a 300V supply. The efficiency of the motor is 83.33%
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Vt = Terminal voltage = 300 V
It = Terminal current = 100 A
In-put Electrical power is
Vt It= 300 V* 100 A= 30000 watts = 30 Kw
Efficiency is given as
(Out put Power/ Input power) * 100 = efficiency
Output power = (Input power * efficiency)/ 100
= (30 Kw * 83.33)/100) = say 25 KW
It = Terminal current = 100 A
In-put Electrical power is
Vt It= 300 V* 100 A= 30000 watts = 30 Kw
Efficiency is given as
(Out put Power/ Input power) * 100 = efficiency
Output power = (Input power * efficiency)/ 100
= (30 Kw * 83.33)/100) = say 25 KW