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.

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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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Subject : electrical machine Please write handwritten Answer
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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…
14/ What are the following statements are true for a three-phase induction motor? I. Three-phase induction motor stator winding is fed from a three-phase supply II. Stator carries a three-phase winding III. Rotor carries a short circuited winding a. I and II only b. I,II and III c. II and III d. I only
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.
What is The Xm for the single-phase induction motor (R1d.c=2 ohm) isIf the no-load test ( Vo=220V, Io=7.2, Po=315watt ) Blocked rotor test (Vs=70V, Is=9.5A, Ps=350watt?
AM EPT
b) A three-phase 4-pole 208 V, 60 Hz induction motor with Y-connected stator has the following set of parameters per phase: stator resistance R₁ = 0.22 S2, stator leakage reactance X₁ = 0.43 2, rotor equivalent resistance R₂ = 0.1272, rotor leakage reactance X₂= 0.43 2, and magnetising reactance XM= 15 2. For a slip of 0.05, calculate the following: i. 11. iii. Stator line current; Stator copper losses and the air-gap power; Output mechanical power.
Please answer asap
Complete the wiring diagrams as per Worksheets 6-A and 6-B then solve for "A" through "K" for the DC motor on Worksheets 6-A and 6-B when it is running at capacity and its specifications are as follows: Rated input = 125 volts, 16 ampsArmature Resistance = 0.3 ohms(Ω)Shunt Field Resistance = 50 ohms (Ω)Series Field Resistance 0.6 ohms (Ω)Rheostat Resistance = 12.5 ohms (Ω) A) Series field current (I-series) a) 2.3 A b) 13.69 A c) 16 A d) 18.3 A B) Shunt field current (I-shunt) a) 2.3 A b) 13.69 A c) 16 A d) 18.3 A C) Armature current (I-arm) a) 2.3 A b) 13.69 A c) 16 A d) 18.3 A
Complete the wiring diagrams as per Worksheets 7-A and 7-B then solve for "A" through "K" for the DC motor on Worksheets 7-A and 7-B when it is running at capacity and its specifications are as follows:Rated input = 125 volts, 16 ampsArmature Resistance = 0.3 ohms(Ω)Shunt Field Resistance = 50 ohms (Ω)Series Field Resistance 0.6 ohms (Ω)Rheostat Resistance = 12.5 ohms (Ω)A)power consumed by series field(P-series)a)56.58W b)153.6W c)265.42W d)1523.WB)power consumed by shunt field(P-shunt)a)56.58W b)153.6W c)265.42W d)1523.56WC)power consumed by armature resistance(P-arm)a)56.58W b)153.6W c)265.42W d)1523.56WD)percent efficiency of the machine( % eff) if rotational loses are 850 Wa)30% b)64% c)86% d)99%
Hi, i dont mind receiving handwritten answer. Just doing homework, thanks in advance.

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