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The armature mmf affects __________

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The armature mmf affects __________

(a) commutation

(b) generated voltage

(c) torque

(d) any of the mentioned

I had been asked this question in examination.

My doubt stems from MMF and Flux Density Waveforms in DC Machines topic in division DC Machines of Electrical Machines

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Best answer
Right answer is (a) commutation

To explain: Armature reaction thus armature mmf affects all of the mentioned above.

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