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The slope of the V-I curve is 16.8°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.

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The slope of the V-I curve is 16.8°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.

(a) .324 Ω

(b) .301 Ω

(c) .343 Ω

(d) .398 Ω

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Origin of the question is Methods of Starting Electric Motors topic in division Starting of Electric Drives

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The correct option is (b) .301 Ω

Easy explanation: The slope of the V-I curve is resistance. The slope given is 16.8° so R=tan(16.8°)=.301 Ω. The slope of the I-V curve is reciprocal of resistance.

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