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which technique servo motor tested o.k or faulty ?



which technique servo motor tested o.k or faulty ?..

Answer / tanmay maheshwari

Servo motors are used for testing faulty conditions as they
rotates only when an error signal comes to its control winding.
when an error(deviation from a rated speed) occurs in the
system, the control winding which is placed 90 degree to the
main winding generates a reverse torque hence regulating the
speed.

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