A separately excited DC generator is rated at 172 kW, 430 V, 400 A and 1800 rpm.Its magnetization curve is shown in Figure Q4(c). The generator's characteristics are:Radj = 0 to 300 N(i)(ii)(iii)RENƑ = 1000 turns per poleSketch an equivalent circuit of the generator with proper labels.RA 0.05 Ω=VF = 430 V= 20 ΩIf Radj63 №, and the prime mover is driving at 1500 rpm, calculate thegenerators' no-load terminal voltage.=Calculate the terminal voltage if a 360 A load is connected to its terminal.Assuming the generator does not have compensating winding. Its armaturereaction at this load is 450 A. turns. The prime mover is driving at 1500 rpm.3

Given the separated excited DC generator P=172 KW, Vt=430 VIa=400 ANr=1800 tpmRA=0.05 ΩRF=20…

A separately excited DC generator is rated at 172 kW, 430 V, 400 A and 1800 rpm. Its magnetization curve is shown in Figure Q4(c). The generator's characteristics are: RA = 0.05 2 RF = 2002 Radj = 0 to 300 VF = 430 V NE = 1000 turns per pole Sketch an equivalent circuit of the generator with proper labels. (i) (ii) (iii) If Radj = 63 №, and the prime mover is driving at 1500 rpm, calculate the generators' no-load terminal voltage. Calculate the terminal voltage if a 360 A load is connected to its terminal. Assuming the generator does not have compensating winding. Its armature reaction at this load is 450 A. turns. The prime mover is driving at 1500 rpm.

A separately excited DC generator is rated at 172 kW, 430 V, 400 A and 1800 rpm. Its magnetization curve is shown in Figure Q4(c). The generator's characteristics are: RA = 0.05 2 RF = 2002 Radj = 0 to 300 VF = 430 V NE = 1000 turns per pole Sketch an equivalent circuit of the generator with proper labels. (i) (ii) (iii) If Radj = 63 №, and the prime mover is driving at 1500 rpm, calculate the generators' no-load terminal voltage. Calculate the terminal voltage if a 360 A load is connected to its terminal. Assuming the generator does not have compensating winding. Its armature reaction at this load is 450 A. turns. The prime mover is driving at 1500 rpm.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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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

A separately excited DC generator is rated at 172 kW, 430 V, 400 A and 1800 rpm.
Its magnetization curve is shown in Figure Q4(c). The generator's characteristics are:
Radj = 0 to 300 N
(i)
(ii)
(iii)
RE
NƑ = 1000 turns per pole
Sketch an equivalent circuit of the generator with proper labels.
RA 0.05 Ω
=
VF = 430 V
= 20 Ω
If Radj
63 №, and the prime mover is driving at 1500 rpm, calculate the
generators' no-load terminal voltage.
=
Calculate the terminal voltage if a 360 A load is connected to its terminal.
Assuming the generator does not have compensating winding. Its armature
reaction at this load is 450 A. turns. The prime mover is driving at 1500 rpm.
3

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