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The direct axis is taken along ________

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in Electric Drives by (99.8k points)
The direct axis is taken along ________

(a) Inter-polar axis

(b) Rotor pole axis

(c) In between inter polar and rotor axis

(d) Parallel to interpolar axis

This question was posed to me in an online quiz.

Asked question is from DC Motors in chapter Characteristics of DC & AC Motors of Electric Drives

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Correct option is (b) Rotor pole axis

For explanation: The direct axis is oriented along the rotor pole axis and the quadrature axis is 90° electrical to rotor pole axis. The direct axis is not oriented along the inter-polar axis.

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