5-4. Assume that the field current of the generator in Problem 5-2 is adjusted to achieve rated voltage (2300 V) at full load conditions in each of the questions below. (a) What is the efficiency of the generator at rated load? (b) What is the voltage regulation of the generator if it is loaded to rated kilovoltamperes with 0.8-PF- lagging loads? (c) What is the voltage regulation of the generator if it is loaded to rated kilovoltamperes with 0.8-PF- leading loads? (d) What is the voltage regulation of the generator if it is loaded to rated kilovoltamperes with unity-power- factor loadde?
5-4. Assume that the field current of the generator in Problem 5-2 is adjusted to achieve rated voltage (2300 V) at full load conditions in each of the questions below. (a) What is the efficiency of the generator at rated load? (b) What is the voltage regulation of the generator if it is loaded to rated kilovoltamperes with 0.8-PF- lagging loads? (c) What is the voltage regulation of the generator if it is loaded to rated kilovoltamperes with 0.8-PF- leading loads? (d) What is the voltage regulation of the generator if it is loaded to rated kilovoltamperes with unity-power- factor loadde?
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...
Related questions
Concept explainers
Three-Phase Transformers
Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.
Transformer
Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.
Question
Please answer Question 5-4 ONLY!
Transcribed Image Text:5-4.
Assume that the field current of the generator in Problem 5-2 is adjusted to achieve rated voltage (2300 V)
at full load conditions in each of the questions below.
(a) What is the efficiency of the generator at rated load?
(b) What is the voltage regulation of the generator if it is loaded to rated kilovoltamperes with 0.8-PF-
lagging loads?
(c) What is the voltage regulation of the generator if it is loaded to rated kilovoltamperes with 0.8-PF-
leading loads?
(d) What is the voltage regulation of the generator if it is loaded to rated kilovoltamperes with unity-power-
factor loads?
Transcribed Image Text:A 2300-V 1000-kVA 0.8-PF-lagging 60-Hz two-pole Y-connected synchronous generator has a
synchronous reactance of 1.1 Q and an armature resistance of 0.15 2. At 60 Hz, its friction and windage
losses are 24 kW, and its core losses are 18 kW. The field circuit has a de voltage of 200 V, and the
maximum 1, is 10 A. The resistance of the field circuit is adjustable over the range from 20 to 200 Q.
The OCC of this generator is shown in Figure P5-1.
5-2.
(a) How much field current is required to make V, equal to 2300 V when the generator is running at no
load?
(b) What is the internal generated voltage of this machine at rated conditions?
(c) How much field current is required to make V, equal to 2300 V when the generator is running at rated
conditions?
(d) How much power and torque must the generator's prime mover be capable of supplying?
3000
2700
2400
> 2100
1800
1500
1200
900
600
300
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
Field current, A
Open-circuit terminal voltage, V
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 6 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,