Make a drawing of the magnetic field cre-ated by a 3-phase, 12-pole induction motor.How can we change the direction of rota-tion of a 3-phase induction motor?

Step 1: Step 2: Step 3: Step 4:

Answered: Make a drawing of the magnetic field…

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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Similar questions

Would a positive-rotating harmonic or a negative-rotating harmonic be more harmful to an induction motor? Explain your answer.
Name three factors that determine the torque produced by an induction motor.
The supply frequency to the stator of an 8-pole induction motor is 70 Hz, and the rotor frequency is 6 Hz. Determine the slip and the rotor speed.
Answer is 2.93 hz. Take No. Of poles = 2.
What is a single - phase induction motor? How does a single- phase induction motor work? How do you test a single phase motor? Which capacitor is used in single phase motor? What are the advantages of single phase induction motor? What are the applications of single phase induction motor? How does an induction motor start? What are the differences between single and three phase I.M ? What are the types of induction motor? What is the difference between induction motor and normal motor? Why three-phase induction motor self start while single phase motor does not self start?
A 6 pole wave wound d.c. shunt generator has 500 conductors. A generator delivers 50 kW of power at 250 voltage at full load. The resistance of the field circuit is 125 2. Actual brush shift is 10°. Then find the demagnetizing and cross magnetizing ampere turns per pole and how many additional turns must be wound on each pole to eliminate the demagnetizing effect.
What are the active components of three-phase Induction Motor? b) Derive an expression for the frequency in the rotor circuit of three-phase IM? c) Draw with details the approximate per phase equivalent circuit of three-phase IM? d) Why the iron loss in rotor of an induction motor is negligible?
9 The rotor of an induction motor has a mo- ment of inertia of 5 kg-m². Calculate the en- ergy needed to bring the speed a. from zero to 200 r/min b. from 200 r/min to 400 r/min c. from 3000 r/min to 400 r/min
The frequency of rotor current in an induction motor is slip times the frequency of stator current. slip times the frequency of supply, One by slip times the frequency of stator current. One by slip times the frequency of supply
You have been asked to design a cheap fan to fit in a refrigerator. Which motor would you select among the single phase induction motors? Justify your choice.
In your opinion, what happens to the rotor speed and current when mechanical load on an induction motor increases? B
In a DC motor, why forces are generated for parts of the loop and not for other parts of the loop. The Force equation with sin theta ( max force when theta is 90 degrees or perpendicular to magnetic field lines.)

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Make a drawing of the magnetic field cre- ated by a 3-phase, 12-pole induction motor. How can we change the direction of rota- tion of a 3-phase induction motor?