EBK DELMAR'S STANDARD TEXTBOOK OF ELECT
6th Edition
ISBN: 8220100546686
Author: Herman
Publisher: YUZU
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Chapter 20, Problem 4PP
Three capacitors having values of 2.2
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Chapter 20 Solutions
EBK DELMAR'S STANDARD TEXTBOOK OF ELECT
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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- Two capacitors having values of 80 F and 60 F are connected in series. What is the total capacitance?arrow_forwardWhich of the following is the capacitance of two 20-microfarad running capacitors connected in parallel? 10 microfarad 20 microfarad 30 microfarad 40 microfaradarrow_forwardThree capacitors having capacitance values of 20F,40F, and 50F are connected in parallel to a 60 - Hz power line. An ammeter indicates a circuit current of 8.6 amperes. How much current is flowing through the 40F capacitor?arrow_forward
- This circuit is connected to a 1000-Hz line. The resistor has a voltage drop of 185 V. the inductor has a voltage drop of 740 V, and the capacitor has a voltage drop of 444 V. The circuit has an apparent power of 51.8 VA. ETITZVA51.8PFER185VIRRPEL740VILXLVARsLLEC444VICXCVARsCCarrow_forwardA postage stamp mica capacitor has the following color marks starting at the upper left dot: yellow, violet, brown, green, no color, and blue. What are the capacitance value, tolerance, and voltage rating of this capacitor?arrow_forwardYou 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.arrow_forward
- A postage stamp capacitor has the following color marks starting at the upper-left dot: black, orange, orange, black, silver, and white. What are the capacitance value and tolerance of this capacitor?arrow_forwardThe circuit is connected to a 60-Hz line. The apparent power in the circuit is 29.985 VA, and the power factor is 62.5%. The resistor has a voltage drop of 14.993 V, the inductor has an inductive reactance of 60 , and the capacitor has a capacitive reactance of 45 . ETITZVA29.985PF62.5%ER14.993VIRRPELILXL60VARsLLECICXC45VARsCCarrow_forwardYou are working in an industrial plant. You have been instructed to double the capacitance connected to a machine. The markings on the capacitor, however, are not visible. The capacitor is connected to 560 volts and an ammeter indicates a current of 6 amperes flowing to the capacitor. What size capacitor should be connected in parallel with the existing capacitor? What is the minimum AC voltage rating of the new capacitor? What is the minimum DC voltage rating of the new capacitor? What is the minimum KVAR size that can be used in this installation?arrow_forward
- Fill in all the missing values. Refer to the formulas that follow. Resistance Capacitance Time constant Total time 150 k 100 F 350 k 35 s 350 pF 10 s 0.05 F 1.2 M 0.47 F 12F 0.05 s 86 k 1.5 s 120 k 470 pF 250 nF 100 ms 8 F 150 s 100 k 150 ms 33 k 4 F =RCR=CC=R Totaltime=5arrow_forwardYou find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors with a 480-VAC rating. However, you find two capacitors rated at 50 F and 370 VAC. Can these two capacitors be connected in such a manner that they can replace the defective capacitor? If yes, explain how they are connected and why the capacitors will not be damaged by the lower voltage rating. If no, explain why they cannot be used without damaging the capacitor.arrow_forwardAn RLC parallel circuit has an apparent power of 400 VA. The inductor has a reactive power of 450 VARs, and the capacitor has a reactive power of 200 VARs. Find the true power or watts.arrow_forward
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