A 220 V d.c. shunt motor runs at 500 r.p.m. when the armature current is 50 A. calculate the speed if the torque is doubled. The armature resistance of the motor is 0.2 ohm
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A 220 V D.C. shunt motor runs at 500 rpm when the armature current is 50 A.
The armature resistance of the motor is 0.2. If the torque is doubled, the speed of the motor will be
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476 rpm479 rpm454 rpmunchanged
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