How many coil sets undergo commutation simultaneously in a wave winding?(a) 1(b) 2(c) 4(d) 3The question was asked during a job interview.My doubt stems from Commutation Process in section Commutation Process & Excitation Methods of DC Machines

How many coil sets undergo commutation simultaneously in a wave windin

1.	How many coil sets undergo commutation simultaneously in a wave winding?(a) 1(b) 2(c) 4(d) 3The question was asked during a job interview.My doubt stems from Commutation Process in section Commutation Process & Excitation Methods of DC Machines
Answer» Right answer is (b) 2 Easy explanation: Commutation takes place simultaneously for P COILS in a lap-wound machine (it has P BRUSHES) and two COIL sets of P/2 coils each in a wave-wound machine (ELECTRICALLY it has two brushes independent of P).

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How many coil sets undergo commutation simultaneously in a wave winding?(a) 1(b) 2(c) 4(d) 3The question was asked during a job interview.My doubt stems from Commutation Process in section Commutation Process & Excitation Methods of DC Machines

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