Which statement is not correct about induction motor Select one: O a. The squirrel-cage rotor is the most common type because it is more rugged, more economical, and simpler. O b. The squirrel-cage winding consists of bars embedded in the rotor slots and shorted at both ends by end rings. The rotor windings can be accessed The wound-rotor winding induction motor has the same form as the stator winding. Induction motor Select one: O a. is used in limited applications O b. is doubly fed motor since it carries AC current in both stator and rotor windings O c. carries alternating current in both the stator and the rotor windings, thus singly-fed. During a weather storm, an atmospheric discharge hits a lightning pole that is grounded through a hemisphere. The maximum value of the lightning current through the rod is 14776 A. The soil resistivity is 100 ohm.m. A man is playing golf 41 m away from the center of the hemisphere. At the moment of the lightning strike, the distance between his two feet is 0.4 m. Compute the Thevenin's voltage in volt (Vab or Vth). Answer:

Which statement is not correct about induction motor Select one: O a. The squirrel-cage rotor is the most common type because it is more rugged, more economical, and simpler. O b. The squirrel-cage winding consists of bars embedded in the rotor slots and shorted at both ends by end rings. The rotor windings can be accessed The wound-rotor winding induction motor has the same form as the stator winding. Induction motor Select one: O a. is used in limited applications O b. is doubly fed motor since it carries AC current in both stator and rotor windings O c. carries alternating current in both the stator and the rotor windings, thus singly-fed. During a weather storm, an atmospheric discharge hits a lightning pole that is grounded through a hemisphere. The maximum value of the lightning current through the rod is 14776 A. The soil resistivity is 100 ohm.m. A man is playing golf 41 m away from the center of the hemisphere. At the moment of the lightning strike, the distance between his two feet is 0.4 m. Compute the Thevenin's voltage in volt (Vab or Vth). Answer:

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

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Write a summary ( point) about equivalent cricuit of three phase induction motor .
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6- In a stepper motor, how is the speed of rotation determined? a) By the current supplied to the motor. b) By the magnitude of the voltage applied. c) By the load applied to the motor. d) By the frequency of the waveforms used. 7- A transformer core is laminated to a) reduce hysteresis loss b) reduce eddy current losses c) reduce copper losses d) reduce all above losses 8- An induction motor with 580 r.p.m. speed at 60 Hz will have a) 8 poles b) 6 poles c) 4 poles d) 2 poles 9- If any two phases for an induction motor are interchanged a) the motor will run in reverse direction b) the motor will run at reduced speed c) the motor will not run d) the motor will burn 10- No-Load speed of which of the following motor will be highest? a) Shunt motor b) Series motor c) Short-Shunt compound motor d) Long-Shunt compound motor
B/ Fill in the blanks: TV ezur 1- In a three-phase induction motor iron losses in stator will be..... that in rotor. 2- In three-phase induction motors sometimes copper bars are placed deep in the rotor to........... 3- Blocked rotor test on induction motors is used to find out. R..., ke, X. 4- The maximum torque in an induction motor depends on .............and .....