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A shunt excited motor with Rm = 200Ω and Ra = 3Ω is connected to a...

A shunt excited motor with Rm = 200Ω and Ra = 3Ω is connected to a constant DC power supply of 230V. A back-emf of 195V is induced in the motor. The brush voltage drop is 1V / brush. Mechanical, magnetic and stray losses are a total of 200W.
a) How much current does the motor draw? b) Calculate the shaft power of the motor

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