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At the starting, the field is very strong but it decreases with time because of the ________

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At the starting, the field is very strong but it decreases with time because of the ________

(a) Reduction in armature current

(b) Increase in armature current

(c) Reduction in speed

(d) Increase in speed

The question was posed to me in examination.

This question is from Dynamic Braking of DC Series Motors topic in section Braking of DC Motors & Induction Motors of Electric Drives

1 Answer

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Correct option is (a) Reduction in armature current

Easiest explanation: At the starting, the field is very strong but it decreases with time because of the reduction in armature current. ∅∝Ia.

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