English, asked by basavarajdpbassu, 4 months ago

20. The dummy coils in a DC machine are used to
a) Increase efficiency
b) Improve commutation
Mechanically balance armature​

Answers

Answered by trivedikevalya1
1

Explanation:

a) Increase efficiency

Answered by Anonymous
0

Answer:

Mark me as brainliest

Explanation:

The dummy coils are simply to provide mechanical balance for the armature. As they do not connect with commutator bars they do not affect the electrical characteristics of the winding.

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