Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
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?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter7: Alternating Current, Power Distribution, And Voltage Systems
Section: Chapter Questions
Problem 11RQ
See similar textbooks
icon
Related questions
icon
Concept explainers
Question
  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
Expert Solution
steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Synchronous Motor
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Electricity for Refrigeration, Heating, and Air C…
Electricity for Refrigeration, Heating, and Air C…
Mechanical Engineering
ISBN:
9781337399128
Author:
Russell E. Smith
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS