Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
9. Four identical alternators each rated for 20 MVA, 11 KV have a subtransient reactance of 164 are working in parallel. The short circuit level at the bus bar is a. 500 MVA b. 125 MVA c. 400 MVA d. 80 MVA A generator having a solidly grounded neutral and arte 10. 50-MVA, 30 kV has positive, negative and zero sequence reactances of 25, 15 and 5 percent respectively. What reactance must be placed in the generator neutral to limit the fault current for a line to ground fault to that for a three phase fault? a. 1.330 b. 1.80 c. 0.80 d. 0.12

9. Four identical alternators each rated for 20 MVA, 11 KV have a subtransient reactance of 164 are working in parallel. The short circuit level at the bus bar is a. 500 MVA b. 125 MVA c. 400 MVA d. 80 MVA A generator having a solidly grounded neutral and arte 10. 50-MVA, 30 kV has positive, negative and zero sequence reactances of 25, 15 and 5 percent respectively. What reactance must be placed in the generator neutral to limit the fault current for a line to ground fault to that for a three phase fault? a. 1.330 b. 1.80 c. 0.80 d. 0.12

Introductory Circuit Analysis (13th Edition)
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...
See similar textbooks
icon
Related questions
Question

l10

answer 9 and 10

9. Four identical alternators each rated for 20 MVA, 11 KV have a subtransient reactance of 164 are working in parallel. The short circuit level at the bus bar is a. 500 MVA b. 125 MVA c. 400 MVA d. 80 MVA A generator having a solidly grounded neutral and arte 10. 50-MVA, 30 kV has positive, negative and zero sequence reactances of 25, 15 and 5 percent respectively. What reactance must be placed in the generator neutral to limit the fault current for a line to ground fault to that for a three phase fault? a. 1.330 b. 1.80 c. 0.80 d. 0.12
Transcribed Image Text:9. Four identical alternators each rated for 20 MVA, 11 KV have a subtransient reactance of 164 are working in parallel. The short circuit level at the bus bar is a. 500 MVA b. 125 MVA c. 400 MVA d. 80 MVA A generator having a solidly grounded neutral and arte 10. 50-MVA, 30 kV has positive, negative and zero sequence reactances of 25, 15 and 5 percent respectively. What reactance must be placed in the generator neutral to limit the fault current for a line to ground fault to that for a three phase fault? a. 1.330 b. 1.80 c. 0.80 d. 0.12
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Nodal analysis
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)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS