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The slope of the I-V curve is 160°. Calculate the value of resistance.

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The slope of the I-V curve is 160°. Calculate the value of resistance.

(a) .36 Ω

(b) .41 Ω

(c) .89 Ω

(d) 2.74 Ω

This question was addressed to me during an internship interview.

I would like to ask this question from Induction Motors topic in portion Speed Control of Direct Current Motors & Induction Motors of Electric Drives

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Correct option is (d) 2.74 Ω

Explanation: The slope of the I-V curve is the reciprocal of the resistance. The slope given is 160° so R=1÷tan(160°)=2.74 Ω. The slope of the V-I curve is resistance.

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