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A dc series excited motor is connected to 230V power supply. The resistance of the armature...

A dc series excited motor is connected to 230V power supply. The resistance of the armature winding is 0.25 ohms and the series winding resistance is 0.15 ohms. At 1100 rpm the motor consumes 50A.
Calculate the speed of the motor when connected to a 200V power supply. Assume that the motor shaft torque is unchanged.

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