When starting a motor across the line, the inrush current is typically described as being greater than the full-load current rating and lasting up to several what?

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Multiple Choice

When starting a motor across the line, the inrush current is typically described as being greater than the full-load current rating and lasting up to several what?

Explanation:
When a motor is started across the line, it experiences a brief surge because the winding’s impedance is low and there’s no back-EMF yet. This inrush current is initially much higher than the full-load running current, but as the motor accelerates, back-EMF builds up, reducing the current toward the running level. That transition happens quickly, so the inrush is described as lasting up to several seconds. Minutes, hours, or days would imply a much longer event, which doesn’t match how fast motors reach operating speed.

When a motor is started across the line, it experiences a brief surge because the winding’s impedance is low and there’s no back-EMF yet. This inrush current is initially much higher than the full-load running current, but as the motor accelerates, back-EMF builds up, reducing the current toward the running level. That transition happens quickly, so the inrush is described as lasting up to several seconds. Minutes, hours, or days would imply a much longer event, which doesn’t match how fast motors reach operating speed.

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