DELMAR'S STANDARD TEXT OF ELECTRICITY
6th Edition
ISBN: 9780357323380
Author: Herman
Publisher: CENGAGE C
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Textbook Question
Chapter 20, Problem 3RQ
A capacitor uses air as a dielectric and has a capacitance of 3
Expert Solution & Answer
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not use ai please
Procedure:-
1- Connect the cct. shown in fig.(2).
a
ADDS DS
Fig.(2)
2-For resistive load, measure le output voltage by using oscilloscope ;then sketch this
wave.
3- Measure the average values ::f VL and IL:
4- Repeat steps 2 & 3 but for RL load.
Report:-
1- Calculate the D.C. output vcl age theoretically and compare it with the test value.
2- Calculate the harmonic cont :nts of the load voltage, and explain how filter
components may be selected.
3- Compare between the three-phase half & full-wave uncontrolled bridge rectifier.
4- Draw the waveform for the c:t. shown in fig.(2) but after replaced Di and D3 by
thyristors with a 30° and a2 = 90°
5- Draw the waveform for the cct. shown in fig.(2) but after replace the 6-diodes by 6-
thyristor.
6- Discuss your results.
Please solve No. 4
and 5
a.) Sketch each of the following signals, and starting with the defining relation, finds its Fourier transform
X (w)
-
a) x(t) = rect(t − 3)
b) x(t)=3t rect(t)
c) x(t) = 2te 3u1(t)
d) x(t) = e−2|t|
b.) Sketch the magnitude and phase spectrum for the four signals in Problem (a).
c) Calculate energy using time-domain and frequency domain formulas for signals in Problem (a) and
(b). Confirm Parseval's theorem using these calculations.
Chapter 20 Solutions
DELMAR'S STANDARD TEXT OF ELECTRICITY
Ch. 20 - 1. What is the dielectric?
Ch. 20 - List three factors that determine the capacitance...Ch. 20 - A capacitor uses air as a dielectric and has a...Ch. 20 - 4. In what form is the energy of a capacitor...Ch. 20 - Four capacitors having values of 20 F, 50 F, 40 F,...Ch. 20 - f the four capacitors in Question 5 were to be...Ch. 20 - A 22-F capacitor is connected in series with a...Ch. 20 - 8. A 450-pF capacitor has a total charge time of...Ch. 20 - Can a nonpolarized capacitor be connected to a DC...Ch. 20 - Explain how an AC electrolytic capacitor is...
Ch. 20 - What type of electrolytic capacitor will be...Ch. 20 - A 500-nF capacitor is connected to a 300-k...Ch. 20 - A film-type capacitor is marked 253 H. What are...Ch. 20 - A postage stamp mica capacitor has the following...Ch. 20 - A postage stamp capacitor has the following color...Ch. 20 - You are changing the starting relay on a central...Ch. 20 - You are an electrician working in an industrial...Ch. 20 - You find that a 25-F capacitor connected to 480...Ch. 20 - Fill in all the missing values. Refer to the...Ch. 20 - Two capacitors having values of 80 F and 60 F are...Ch. 20 - Three capacitors having values of 120 F, 20 F, and...Ch. 20 - Three capacitors having values of 2.2 F, 280 F,...Ch. 20 - A 470-F capacitor is connected in series with a...
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