Armature coil is short circuited by brushes when it lies_____________?
Correct answer: A. along neutral axis
- A. along neutral axis
- B. along field axis
- C. in any of the above positions
- D. in none of the above positions
Explanation
A coil is short-circuited by the brush while it is passing through the magnetic neutral axis, which is the commutation zone. The coil is then temporarily connected across the brush and undergoes current reversal.
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