The main advantage of distributing the winding of a synchronous generator in slots is to
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Answer & Explanation
Correct AnswerD. Reduce the harmonics in the generated EMF
Quick Explanation
Distributing a phase winding among several slots makes the resultant air-gap mmf and generated emf more nearly sinusoidal and reduces selected harmonic components. This improves waveform quality, which is the principal advantage stated in option D.
Formula / Key Relation
Distribution factor kd<1 for harmonics; distribution helps suppress harmonic emf
Detailed Explanation
Correct Answer
D — Reduce the harmonics in the generated EMF
Concept and Reasoning
Distributing a phase winding among several slots makes the resultant air-gap mmf and generated emf more nearly sinusoidal and reduces selected harmonic components. This improves waveform quality, which is the principal advantage stated in option D.
Calculation / Key Relation
Distribution factor kd<1 for harmonics
distribution helps suppress harmonic emf
Exam Takeaway
Distributed winding → smoother, more sinusoidal mmf/emf.
Common Mistake
Do not view the reduction in fundamental winding factor as the desired advantage; harmonic reduction is the benefit.
Quick Trick
Distributed winding → smoother, more sinusoidal mmf/emf.
Common Mistake
Do not view the reduction in fundamental winding factor as the desired advantage; harmonic reduction is the benefit.
Exam Tip
Distributed winding → smoother, more sinusoidal mmf/emf.
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