The use of a series capacitor with the auxiliary windings of a single-phase induction motor permits:* The obtaintion a 90-degrees phase angle between currents in the main and auxiliary windings.The garantee a relatively high starting torqueall above

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Answered: The use of a series capacitor with the…

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 6RQ: Name three factors that determine the torque produced by an induction motor.

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Similar questions

Write a summary ( point) about equivalent cricuit of three phase induction motor .
6- Which of the following supply is given to the rotor winding of 3-Phase Induction Motor: a) DC Supply b) AC Supply c) No Supply d) Pulsating Supply 7- 3-Phase Induction Motor will have Starting Torque and Starting Current a) High, High b) Low, Low. c) High, Low d) Low, High 8- Which of the following method is used for controlling the speed of an induction motor: a) Changing number of stator poles b) Supply voltage control c) Frequency control d) All the options are correct 9- Which of the following method cannot be used for starting of 3-Phase Squirrel Induction Motor: a) Star-Delta Starting b) Line resistor startling c) transformer Starter d) Rotor Resistance Starting 10- The rotor of a stepper motor has no: a) windings b) commutator c) brushes d) all of the above
3. What are the various losses in an induction motor? On whatfactors do they depend?
Find the value:
Types of three phase induction motor and its construction.
Discuss the following statements briefly 1. Adding auxiliary winding in single phase induction motors. The starting capacitor of a capacitor start capacitor run induction motor is 100 µF while the running capacitor is 14 µF.
Q3 A 50 Hz split-phase induction motor has a resistance of 50 and an inductive reactance of 200 in the main winding as well as starting winding. Determine the value of resistance and capacitance to be added in series with the starting winding to send the same current in each winding with a phase difference of 90°. Ans[ 14.99 Ω, 127.5μF]
Discuss the effects of rotor resistance in T-S characteristics of 3 phase induction motor.
Choose True (V) or false( x) for the following : 4) Reluctance is a measure of "opposition" the magnetic circuit offers to the flux. 5) The rated output power (transformer rating) can be used to determine the turns ratio of the transformer. 6) With the increase in speed of a series DC motor, Both back emf as well as line current increase. 7) When an induction motor is stationary, the stator and rotor windings form the equivalent of a transformer. 8) Increasing the load current for DC Self-excited generator Shunt-Wound Generator will increase the terminal voltage. 9) In lap windings there are as many paths in parallel and used to produce high current, low voltage output. 10) In 3-pahse induction motor, if the rotor speed increases, the rate at which the rotating magnetic field cuts the rotor bars is increasing.
Discuss two advantages and disadvantages of a coubly-fed induction generato DFIG) over a squirrel cage induction generator (SCIG) in wind turbine technology. Please solve this with in 1 hour
I need the answer as soon as possible
Why do we need to have brushes in a squirrel-cage rotor type induction motor? (short answer)

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The use of a series capacitor with the auxiliary windings of a single-phase induction motor permits: * The obtaintion a 90-degrees phase angle between currents in the main and auxiliary windings. ° The garantee a relatively high starting torque all above