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An a-c generator has six poles and operates at 1,200 rpm. (a) What frequency does it generate? (b) At what speed must the generator operate to develop 25 cycles? 50 cycles? (c) How many poles are there in a generator that operates at a speed of 240 rpm and develops a frequency of 60 cycles?

An a-c generator has six poles and operates at 1,200 rpm. (a) What frequency does it generate? (b) At what speed must the generator operate to develop 25 cycles? 50 cycles? (c) How many poles are there in a generator that operates at a speed of 240 rpm and develops a frequency of 60 cycles?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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  1. An a-c generator has six poles and operates at 1,200 rpm.

(a) What frequency does it generate?

(b) At what speed must the generator operate to develop

25 cycles? 50 cycles?

(c) How many poles are there in a generator that operates at

a speed of 240 rpm and develops a frequency of 60 cycles?

(+) -I Cycle- (0) Two poles - one cycle per revolution. Current
Transcribed Image Text:(+) -I Cycle- (0) Two poles - one cycle per revolution. Current
N N -2 Cycles - (6) Four poles-two cycles per revolution. LS NA LSJ LN LS -3 Cycles- (c) Six poles -three cycles per revolution. Sketch illustrating the relation between the number of poles and the generated a-c frequency in cycles per revolution. Current Current
Transcribed Image Text:N N -2 Cycles - (6) Four poles-two cycles per revolution. LS NA LSJ LN LS -3 Cycles- (c) Six poles -three cycles per revolution. Sketch illustrating the relation between the number of poles and the generated a-c frequency in cycles per revolution. Current Current
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