Q2 a3-phase, 410V, 4-poles, 50Hz, star connected SM has Zs=0.7+j5.892/phase. The motor takes a current of 19A at 0.8 leading powerfactor. Find the excitation emf and load angle. If the load angle at no loadis 1.5 mechanical dree with same excitation voltage, find the friction andwindage torque. WJo. 03WSIN₂.30λ Z₁=0.7+j5-8₁ P=2Ia=19A, Pf=0.8 Led, Ep=Eo=?(2)PFWGofPSolutionE =I-V=410vEo = VP- Ia Ratj x5 = 236.713 - 19 <-18.21 x 0.7 +5.8)307.6 18.21 V• 1500Pin- Prut PFW + P devopPin = √3 IV C054 = √3x410 x 1920-8-10-794kwPau= 3 I₂R= 3x19x0.7 - 758.1 WZS=Pdtop= 3x (236.173)²T²Pderop= 3xVxESin S1323L=3× 1·5X P=3 at no Lood Vo=E0=236.173урт41013√√ R²+ Xs² = √√√√0.7²4+ 5.8² = 5.845-84PFw= 10.794KW - 758,1-1506, 433PFw=8529-467سؤال مهم جداً= 236.1738529-467 x 60Load Ange= -1 8-21B00X2Xx Sin C3) 150 6443354.3 N-mHYS05022ENUOKTEXTICC(GE

Answered: Image /qna-images/answer/4625a762-61ef-439b-bbdd-a25bc28a1f15.jpg

Q2/a3-phase, 410V, 4-poles, 50Hz, star connected SM has Zs= 0.7+j5.892/phase. The motor takes a current of 19A at 0.8 leading power factor. Find the excitation emf and load angle. If the load angle at no load is 1.5 mechanical dree with same excitation voltage, find the friction and windage torque.

Q2/a3-phase, 410V, 4-poles, 50Hz, star connected SM has Zs= 0.7+j5.892/phase. The motor takes a current of 19A at 0.8 leading power factor. Find the excitation emf and load angle. If the load angle at no load is 1.5 mechanical dree with same excitation voltage, find the friction and windage torque.

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

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.

Question

Q2 a3-phase, 410V, 4-poles, 50Hz, star connected SM has Zs=
0.7+j5.892/phase. The motor takes a current of 19A at 0.8 leading power
factor. Find the excitation emf and load angle. If the load angle at no load
is 1.5 mechanical dree with same excitation voltage, find the friction and
windage torque.

W
Jo. 03
W
SI
N₂.
30
λ Z₁=0.7+j5-8₁ P=2
Ia=19A, Pf=0.8 Led, Ep=
Eo=?
(2)
PFW
Gof
P
Solution
E =
I
-
V=410v
Eo = VP- Ia Ratj x5 = 236.713 - 19 <-18.21 x 0.7 +5.8)
307.6 18.21 V
• 1500
Pin- Prut PFW + P devop
Pin = √3 IV C054 = √3x410 x 1920-8-10-794kw
Pau= 3 I₂R= 3x19x0.7 - 758.1 W
ZS=
Pdtop= 3x (236.173)²
T²
Pderop= 3xVxE
Sin S
1323
L=3× 1·5X P=3 at no Lood Vo=E0=236.173
урт
410
13
√√ R²+ Xs² = √√√√0.7²4+ 5.8² = 5.84
5-84
PFw= 10.794KW - 758,1-1506, 433
PFw=8529-467
سؤال مهم جداً
= 236.173
8529-467 x 60
Load Ange= -1 8-21
B00X2X
x Sin C3) 150 64433
54.3 N-m
HYS
05022
ENU
OK
TEXTICC
(GE

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