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The cross field machines have _________

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The cross field machines have _________

(a) two fluxes electrically in quadrature

(b) two fluxes mechanically in quadrature

(c) one set of brushes per pole

(d) all of the mentioned

I had been asked this question in semester exam.

This interesting question is from Rotating Amplifiers in section DC Generators of Electrical Machines

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Correct answer is (a) two fluxes electrically in quadrature

The best explanation: The cross field machines have two fluxes electrically in quadrature.

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