Answered: Draw the winding diagram of a simplex…

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Electrical Engineering

Draw the winding diagram of a simplex 2-layer lap winding for a 4-pole generator with 20 coils.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter35: Harmonics 916

Section: Chapter Questions

Problem 3RQ: Would a positive-rotating harmonic or a negative-rotating harmonic be more harmful to an induction...

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Concept explainers

Single Phase Induction Motor

The single-phase induction motor or engine consists of a single rotating phase in the stator and a rotating cage in the rotor. When phase one supply is connected to the stator winding, a magnetic field is generated. In the pulsating field, the rotor does not rotate due to inertia. So, a single-phase import motor does not start and requires some initial methods.

Question

a)Draw the winding diagram of a simplex 2-layer lap winding for a 4-pole generator with 20 coils.

b)How do you define ‘back emf’ and speed regulation of a dc motor. Can you explain analytically what happens to the torque and speed of a motor when the flux is varied?

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Calculate the flux per pole required on full-load for a 50 kW, 400 V, 8-pole, 600 r.p.m. d.c. shunt generator with 256 conductors arranged in a lap-connected winding. The armature winding resistances is 0.1N, the shunt field resistance is 200 N and there is a brush contact voltage drop of 1 V at each brush on full load. 3.
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