College Physics
OER 2016 Edition
ISBN: 9781947172173
Author: OpenStax
Publisher: OpenStax College
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Chapter 21, Problem 10PE
To determine
(a)
To calculate the total resistance of the line.
To determine
(b)
To find the power dissipated by 100 of these insulators
To determine
(c)
To calculate the power fraction carried by this line
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A 215-KV power transmission line carrying 500 A is hung from grounded metal towers by ceramic insulators, each having a
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(a) What is the resistance to ground of 50 of these insulators? (Assume the insulators are connected in parallel.)
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(b) Calculate the power dissipated by 50 of them.
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What is the total power carried by the line?
A 170-kV power transmission line carrying 500 A is hung from grounded metal towers by ceramic insulators, each having a 1.05 109 Ω resistance.
(a) What is the resistance to ground of 60 of these insulators? (Assume the insulators are connected in parallel.) (b) Calculate the power dissipated by 60 of them.(c) What fraction of the power carried by the line is this?
A 240-kV power transmission line carrying 5.00 X 102 A is hung from grounded metal towers by ceramic insulators, each having a 1.00 ×109 -Ω resistance.Figure 21.51
Calculate the power dissipated by 100 of them.
Chapter 21 Solutions
College Physics
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