Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 21, Problem 2PP
Assume that the voltage drop across the resistor, ER, is 78 V; the voltage drop across the capacitor, EC, is 104 V; and the circuit has a total impedance, Z, of 20
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A circuit consists of an AC voltage source, a 10-ohm resistor, and a capacitor, all connected in series. The magnitude of the impedance of the capacitor is also 10 ohms. Which of the following is true about the phase angle difference between the source voltage and the current through the circuit?
a. Insufficient information is given.
b. The phase angle difference will be zero degrees.
c. The phase angle difference will be 45 degrees.
d. The phase angle difference will be 90 degrees.
Two impedances are connected in parallel across a 220-volt source. If Z1= 4 cis (30) and Z2 =
5 cis (60) ohms. Find the equivalent admittance ( Siemen ) of the circuit.
O 0.435 cis(- 43.3)
O 2.3 cis (43.3)
O 0.835 cis (-53.3)
O 0.835cis (53.3)
Please show you detailed solution
Number 10
A voltage of 250 volts at 50 Hz is impressed on a circuit having a 60-ohm resistor, 35-?F capacitor, and a 0.25-henry inductor in series. Determine power factor.
A. 0.979 C. 0.924
B. 0.862 D. 0.707
Chapter 21 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 21 - In a pure capacitive circuit, does the current...Ch. 21 - A series circuit contains a 20- resistor and a...Ch. 21 - An RC series circuit has a power factor of 76%....Ch. 21 - An RC series circuit has a total impedance of 84 ....Ch. 21 - A capacitor has a capacitive reactance of 50 when...Ch. 21 - A 15-F AC capacitor is connected in series with a...Ch. 21 - An RC series circuit is connected to a 120-V,...Ch. 21 - An RC series circuit is connected to a 240-V,...Ch. 21 - Prob. 1PPCh. 21 - Assume that the voltage drop across the resistor,...
Ch. 21 - Assume the circuit shown in Figure 21-1 has an...Ch. 21 - Assume the circuit in Figure 21-1 has a power...Ch. 21 - In a series RC circuit, ET=240 volts, R=60, and...Ch. 21 - In a series RC circuit, ET=120 volts, R=124, and...Ch. 21 - In a series RC circuit, ET=208 volts, IT=2.4...Ch. 21 - In a series RC circuit, ET=460 volts and =44. Find...Ch. 21 - In a series RC circuit, ET=240 volts at 60 Hz. An...Ch. 21 - In a series RC circuit, the apparent power is 4250...
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