A three phase 20 pole star connected alternator has 140 slots on the armature. Each slot contains conductors. It is driven at 350 rpm. The line value of emf available across the terminals is 2.8kV. Fi the frequency of induced emf and flux per pole. Frequency of Induced EMF =

A three phase 20 pole star connected alternator has 140 slots on the armature. Each slot contains conductors. It is driven at 350 rpm. The line value of emf available across the terminals is 2.8kV. Fi the frequency of induced emf and flux per pole. Frequency of Induced EMF =

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.

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A three phase 20 pole star connected alternator has 140 slots on the armature. Each slot contains 8
conductors. It is driven at 350 rpm. The line value of emf available across the terminals is 2.8kV. Find
the frequency of induced emf and flux per pole.
Frequency of Induced EMF =
Number of turns =
Flux
per pole =
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