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Calculate the quality factor for the R-L circuit if R=28 Ω and L=2 H.

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in Electric Drives by (99.8k points)
Calculate the quality factor for the R-L circuit if R=28 Ω and L=2 H.

(a) 14

(b) 16

(c) 10

(d) 17

This question was addressed to me during an internship interview.

Query is from Regenerative Braking of DC Shunt Motors topic in section Braking of DC Motors & Induction Motors of Electric Drives

1 Answer

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Right option is (a) 14

To elaborate: The quality factor is defined as the ratio of the reactive power to the active power consumed. The resistor always absorbs active power and inductor absorbs the reactive power. Quality factor=R÷L=28÷2=14.

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