The speed control of universal motor used for sewing machines is by
A. friction
B. varying the resistance
C. tapping the field
D. centrifugal mechanism
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Answer: B
Share your understanding of this question with the correct explanation.
The speed control of universal motor used for sewing machines is by
A. friction
B. varying the resistance
C. tapping the field
D. centrifugal mechanism
Answer: B
Share your understanding of this question with the correct explanation.