Q1: A 50HZ,11KV,3-ph,alternator with earthed neutral has a reactance of 50\ph and is connected to bus bar through a C.B.The distributed capacitance up to C.B between phase and neutral is 0.01µF,Determine: 1-The restriking voltage across the contacts of the breaker, 2-The frequency of oscillation, and 3-The voltage across the capacitance.
Q1: A 50HZ,11KV,3-ph,alternator with earthed neutral has a reactance of 50\ph and is connected to bus bar through a C.B.The distributed capacitance up to C.B between phase and neutral is 0.01µF,Determine: 1-The restriking voltage across the contacts of the breaker, 2-The frequency of oscillation, and 3-The voltage across the capacitance.
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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![Q1: A 50HZ,11KV,3-ph,alternator with earthed neutral
has a reactance of 50\ph and is connected to bus bar
through a C.B.The distributed capacitance up to C.B
between phase and neutral is 0.01HF,Determine:
1-The restriking voltage across the contacts of the
breaker,
2-The frequency of oscillation,and
3-The voltage across the capacitance.
(if the
disconnecting capacitive tank)?
Q2:Repeat (1,2,and 3) in Q1 if the P.F. of the fault was
capacitance
current
breaking
due
to
0.4?
Q3:Repeat (1,2,and 3) in Q1 if the current chops at an
instantaneous rate of 8A?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4b0f045d-f7ee-4189-a7a8-17577470be5d%2F61ff65e4-980b-496d-9cab-79bc5fdca483%2Fxa2jiyc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q1: A 50HZ,11KV,3-ph,alternator with earthed neutral
has a reactance of 50\ph and is connected to bus bar
through a C.B.The distributed capacitance up to C.B
between phase and neutral is 0.01HF,Determine:
1-The restriking voltage across the contacts of the
breaker,
2-The frequency of oscillation,and
3-The voltage across the capacitance.
(if the
disconnecting capacitive tank)?
Q2:Repeat (1,2,and 3) in Q1 if the P.F. of the fault was
capacitance
current
breaking
due
to
0.4?
Q3:Repeat (1,2,and 3) in Q1 if the current chops at an
instantaneous rate of 8A?
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