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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 0.01µF,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)
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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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?
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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