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The slope of the V-I curve is 13.89°. Calculate the value of resistance.

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The slope of the V-I curve is 13.89°. Calculate the value of resistance.

(a) .247 Ω

(b) .345 Ω

(c) .231 Ω

(d) .222 Ω

The question was posed to me during an online exam.

Asked question is from Induction Motors in chapter Speed Control of Direct Current Motors & Induction Motors of Electric Drives

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Right answer is (a) .247 Ω

Easy explanation: The slope of the V-I curve is resistance. The slope given is 13.89° so R=tan(13.89°)=.247 Ω. It behaves like a normal resistor.

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