1. The value of additional resistor to get max torque at start. 2. Rotor current and rotor torque after the rotor speed decreasing from synchronous speed by 88% and transformation ratio equal 3.8, when: a. Sl-S3=$4=1, S2-$5-0. b. S1-S2-1, c. $1=$2=0, d. Sl-$2-1, $3 $4-S5-0. S3-$4=$5%3D1. S3 $4-$5-0, S6-S7-S8-0.

1. The value of additional resistor to get max torque at start. 2. Rotor current and rotor torque after the rotor speed decreasing from synchronous speed by 88% and transformation ratio equal 3.8, when: a. Sl-S3=$4=1, S2-$5-0. b. S1-S2-1, c. $1=$2=0, d. Sl-$2-1, $3 $4-S5-0. S3-$4=$5%3D1. S3 $4-$5-0, S6-S7-S8-0.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Concept explainers

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.

Question

400V/SOHZ/4 pole
Induction
Motor
Ry-0.0242phase
54
$5
X=0.062
la
:224F
+2 24F 224F
Find:
1. The value of additional resistor to get max torque at start.
2. Rotor current and rotor torque after the rotor speed decreasing from
synchronous speed by 88% and transformation ratio equal 3.8, when:
a. SI-S3=$4=1,
b. Sl-S2-1,
c. $1=$2-0,
d. S1-$2-1,
S2=S5=0.
S3-S4-S5-0.
S3=$4=S5=1.
S3-$4-$5%3D0,
S6-S7-$8-0.
一。

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Q:A8 pole long shunt DC compound generator ruining at 1200 r.pm , supplies a load of 0,255 KA at 230 V , the total flux is 0.288 Wb.What will be the new rotor speed if the flux decreased to (50 %) ?, and the e.mf generated decreased to (50%) . armature resistance 0.037, series field resistance 0.43 and shunt field resistance 220 all resistances in ohm .
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Q:A8 pole long shunt DC compound generator ruining at 1200 r.pm , supplies a load of 0.255 KA at 230 V , the total flux is 0.288 Wb .What will be the new rotor speed if the flux decreased to (50%) ?, and the e.mf generated decreased to (50%) . armature resistance 0.037, scries ficld resistance 0.43 and shunt field resistance 220 all resistances in ohm.