Mindtap Electrical, 4 Terms (24 Months) Printed Access Card For Herman's Delmar's Standard Textbook Of Electricity, 6th (mindtap Course List)
6th Edition
ISBN: 9781305634312
Author: Herman, Stephen L.
Publisher: Cengage Learning
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Textbook Question
Chapter 21, Problem 7PP
A pure capacitive circuit is connected to a 480-volt, 60-Hz power source. An ammeter indicates a current flow of 24 amperes. The circuit current must be reduced to 16 amperes by connecting a second capacitor in series with the first. What is the value of the existing capacitor? What value capacitor should be connected in series with the original capacitor to limit the circuit current to 16 amperes?
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P Pearson MyLab and Mastering
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P Course Home
Watch out for units (i.e, kQ, mA, etc), show all units on answers and
clearly mark all answers
1)(5 pts) Specify if the following elements are absorbing or delivering power, and determine the
amount of power being absorbed or delivered.
10 V +
a)
5A
+
5 V
-
b)
2A
+ 10 V
-2A
2)(5 pts) Two circuits, shown by boxes A and B are connected as shown below. Use the
current reference direction provided and the voltage reference polarity shown to determine
the power for the interconnection. Also state the direction of power flow for the
connection: form A to B or B to A.
A
I
+
I
a) I = -6 A
V = -20 Volts
b) 1 = 8 A
V = 30 Volts
c) = 4 A
V = -80 Volts
d) I = -5 A
V = 40 Volts
B
3) (5 pts) Use Ohm's Law, KCL and KVL to determine values for V1, V2, V₁, I₁, and I2.
200 Ohms
A,
+
12
+
V1 75 Ohms
3 Amps
+
V2
300 Ohms
25 Ohms
4) (5 pts) For the circuit in Problem 2, determine the power (expressed as a…
Find the power delivered across the 10 ohm resistor
Chapter 21 Solutions
Mindtap Electrical, 4 Terms (24 Months) Printed Access Card For Herman's Delmar's Standard Textbook Of Electricity, 6th (mindtap Course List)
Ch. 21 - Can current flow through a capacitor?Ch. 21 - What two factors determine the capacitive...Ch. 21 - How many degrees are the current and voltage out...Ch. 21 - Does the current in a pure capacitive circuit lead...Ch. 21 - 5. A 30- capacitor is connected into a 240-V,...Ch. 21 - 6. A capacitor is connected into a 1250-V, 1000-Hz...Ch. 21 - 7. A capacitor is to be connected into a 480-V,...Ch. 21 - On the average, by what factor is the life...Ch. 21 - A capacitor is connected into a 277-V, 400-Hz...Ch. 21 - A capacitor has a voltage rating of 350 VAC. Can...
Ch. 21 - A utility company plans to connect a total of 20 F...Ch. 21 - What is the minimum AC voltage rating of each...Ch. 21 - What is the total current flow through the circuit...Ch. 21 - What is the minimum KVAR rating of each capacitor...Ch. 21 - You are working as an electrician in an industrial...Ch. 21 - You are working in an industrial plant. You have...Ch. 21 - Capacitive Circuits Fill in all the missing...Ch. 21 - A 4.7-F capacitor is connected to a 60-Hz power...Ch. 21 - A capacitor is connected to a 208-volt, 60-Hz...Ch. 21 - A 0.47-F capacitor is connected to a 240-volt...Ch. 21 - Three capacitors having capacitance values of...Ch. 21 - A capacitor has a capacitive reactance of 300 ...Ch. 21 - A pure capacitive circuit is connected to a...
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