A series motor when working at full load of a 500v supply takes a current of 100a and runs at 800 rpm. The resistance of field winding is 0.05ohm and armature winding is 0.25ohm respectively. To develop one half of the full load torque at a speed of 900 rpm, the required resister in parallel with armature
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A series motor when working at full load of a 500v supply takes a current of 100a and runs at 800 rpm. The resistance of field winding is 0.05ohm and armature winding is 0.25ohm respectively. To develop one half of the full load torque at a speed of 900 rpm, the required resister in parallel with armature is 525 volts
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