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Calculate the quality factor for the purely inductive coil.

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in Electric Drives by (99.8k points)
Calculate the quality factor for the purely inductive coil.

(a) inf

(b) 10

(c) 3

(d) 6

The question was posed to me during an interview.

Enquiry is from Electric Motors topic in chapter Braking of Electric Motors of Electric Drives

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The correct choice is (a) inf

The best I can explain: The quality factor is defined as the ratio of the reactive power to the active power consumed. The purely inductive coil always absorb reactive power. The value of active power consumed is 0. Quality factor=Q/0=inf.

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