Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 19, Problem 2PA
You are an electrician working in an industrial plant. You discover that the problem with a certain machine is a defective capacitor. The capacitor is connected to a 240-volt AC circuit. The information on the capacitor reveals that it has a capacitance value of 10 mF and a voltage rating of 240 VAC. The only 10-mF AC capacitor in the storeroom is marked with a voltage rating of 350 WVDC. Can this capacitor be used to replace the defective capacitor? Explain your answer.
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8.46 The generator circuit shown in Fig. P8.46 (on page 494) isconnected to a distant load via a long coaxial transmission line.The overall circuit can be modeled as in Fig. P8.46(b), in whichthe transmission line is represented by an equivalent impedanceZline = (5+ j2) W.(a) Determine the power factor of voltage source Vs.(b) Specify the capacitance of a shunt capacitor C that wouldraise the power factor of the source to unity when connectedbetween terminals (a,b). The source frequency is 1.5 kHz.
7. MOSFET circuit
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+ 5 V
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Vout
Chapter 19 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 19 - 1. What is the dielectric?
Ch. 19 - List three factors that determine the capacitance...Ch. 19 - A capacitor uses air as a dielectric and has a...Ch. 19 - 4. In what form is the energy of a capacitor...Ch. 19 - Four capacitors having values of 20 F, 50 F, 40 F,...Ch. 19 - f the four capacitors in Question 5 were to be...Ch. 19 - A 22-F capacitor is connected in series with a...Ch. 19 - 8. A 450-pF capacitor has a total charge time of...Ch. 19 - Can a nonpolarized capacitor be connected to a DC...Ch. 19 - Explain how an AC electrolytic capacitor is...
Ch. 19 - What type of electrolytic capacitor will be...Ch. 19 - A 500-nF capacitor is connected to a 300-k...Ch. 19 - A film-type capacitor is marked 253 H. What are...Ch. 19 - A postage stamp mica capacitor has the following...Ch. 19 - A postage stamp capacitor has the following color...Ch. 19 - You are changing the starting relay on a central...Ch. 19 - You are an electrician working in an industrial...Ch. 19 - You find that a 25-F capacitor connected to 480...Ch. 19 - Fill in all the missing values. Refer to the...Ch. 19 - Two capacitors having values of 80 F and 60 F are...Ch. 19 - Three capacitors having values of 120 F, 20 F, and...Ch. 19 - Three capacitors having values of 2.2 F, 280 F,...Ch. 19 - A 470-F capacitor is connected in series with a...
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