The direction of rotation of universal motor can be reversed the by reversing the flow of current through__________?
Correct answer: C. either armature winding or field winding
- A. armature winding
- B. field winding
- C. either armature winding or field winding
- D. none of the above
Explanation
Reversing either the armature-current direction or the field-current direction reverses the torque, because torque depends on the interaction of the two magnetic fields. Reversing both together would leave the rotation direction unchanged.
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