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Correct Answer: (A)
heavy sparking at brushes
Explanation: it would cause intolerably heavy sparking at the brushes which may destroy the commutator and brush-gear. sudden development of large torque will cause mechanical shock to the shaft, reducing its life. such heavy current cannot be generally permitted to be drawn from the source of supply.
Explanation by: Mr. Dubey
it would cause intolerably heavy sparking at the brushes which may destroy the commutator and brush-gear. sudden development of large torque will cause mechanical shock to the shaft, reducing its life. such heavy current cannot be generally permitted to be drawn from the source of supply.
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Mr. Dubey
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