The most likely cause(s) of sparking at the brushes in a DC machine is /are ____________

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answerhappygod
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The most likely cause(s) of sparking at the brushes in a DC machine is /are ____________

Post by answerhappygod »

a) Open coil in the armature
b) Defective interpoles
c) Incorrect brush spring pressure
d) Open coil in armature, defective interpoles and incorrect brush spring pressure
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