Draw diagrams representing Star and Delta configured motors and explain usingadditional sketches how you would test for good/bad winding insulation.Show via diagram how this motor can be connected via STAR/ DELTA starting method,outline all components in your circuit.Explain how the STAR /DELTA start sequence function.

Answered: Image /qna-images/answer/751e0cbf-460e-4f87-867f-cfe1c55c54a2.jpg

Answered: Draw diagrams representing Star and…

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter28: Part Winding Motor Starters

Section: Chapter Questions

Problem 6SQ

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5-Which of the following statements regarding single phase induction motors correct? (a) It requires only one winding. (c) It is self-starting. (b) It can rotate in one direction only. (d) It is not self-starting.
The load resistance referred to stator is____ for the induction motor with slip 1% and rotor resistance is 2 ohms. a.100 ohms b.158 ohms c.98 ohms d.198 ohm
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Subject : electrical machine Please write handwritten Answer
4. Why Induction motors are extensively used these days:
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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 c. 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 Oc. 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…
(a) Draw and explain slip-torque characteristics of 3-phase induction motor. (b) No load and blocked rotor test of a 440 V, three phase 55 HP, star connected induction motor gave the following results No-load (line values) : 440 V, 5 A , 230 W Blocked rotor test (Line values) : 130 V, 15 A , 1800 W Stator resistance per phase is 1.2 Q. Calculate the parameters of exact equivalent circuit and draw the exact equivalent circuit referred to stator side.
Question 11 Design a Duplex layer simplex lap winding DC machine armature winding by providing a complete wiring diagram with the following Number of Poles: 2 Number of Slots; 8 Thank you and Godbless ASAP pleasee
Attached is a picture from my textbook, not a graded assignment or exam, please do not reject. Thank you!
QUESTION The purpose of an interpole in the DC motor design is to ____. reduce heat generated under load increase torque when running under heavy load conditions reduce rpm when under exceptional mechanical loads reduce sparking at the commutator QUESTION One of the dangers of Series motors is : _______________ They are inherantly unstable and should never be used. The motor can reach dangerous RPM if there is no load. The motor overheats quickly when loaded at 100% The CEMF will stop the motor too quickly when the load is suddenly reduced. QUESTION As a motor increases in rotational velocity to 100% of the rated RPM, the CEMF induced in the motor: increases upto 7 to 10x the source voltage. almost zero. increases to the point where it is almost the same as the source voltage. stays the same QUESTION The size of the conductor…
One type of failure that's more common with 200 HP motors than with 10 HP motors is A. rotor bar failure.B. contactor failure.C. bearing failure. D. stator failures.

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