ELECTRICITY FOR TRADES
3rd Edition
ISBN: 9780078118630
Author: Petruzella
Publisher: RENT MCG
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Textbook Question
Chapter 8.2, Problem 1RQ
Calculate the total resistance for each of the following resistor circuits:
- a. Series circuit: R1 = 40 Ω, R2 = 75 Ω
- b. Parallel circuit: R1 = 200 Ω, R2 = 200 Ω, R3 = 200 Ω
- c. Series circuit: R1 = 2,000 Ω, R2 = 6,000 Ω, R3 = 2,200 Ω
- d. Parallel circuit: R1 = 14 Ω, R2 = 32 Ω
- e. Series circuit: R1 = 4,700 Ω, R2 = 800 Ω, R3 = 200 Ω
- f. Parallel circuit: R1 = 60 Ω, R2 = 30 Ω, R3 = 15 Ω
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Please answer a to g.
Find the Z-transform including the region of convergence (ROC) of
x(n)
=
πn-1
e/6n u(n-1)
Consider the radial power system shown below. Assume that the generator is ideal, with a terminal voltage of 1.0 pu. The system data are
given in the accompanying table. If the line-to-ground fault currents flowing in circuit breaker B2 for faults at buses 2 and 3 are respectively
12.55A and 6.34A, then the corresponding faulted phase voltages in pu are equal to:
2
3
5
From To Positive sequence Zero sequence
impedance
impedance
B₁
B₂
B₂
B
1
2
0.01 + j0.05
0.02+0.13
2
3
0.003+j0.04
0.01+j0.16
3
4
0.008+j0.04
0.04+j0.15
5
0.01 +j0.05
0.03+j0.15
Select one:
a. OV, 0.31V
O b. 0V, 0.51V
О с.
1V, 0.31V
○ d.
1V, 0.51V
Chapter 8 Solutions
ELECTRICITY FOR TRADES
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Ch. 8.1 - Compare the connection and control function of a...Ch. 8.1 - If the wiper arm of a linear potentiometer is...Ch. 8.1 - Explain how a 10-turn trim pot is adjusted.Ch. 8.1 - Compare the way the resistance varies in a linear...Ch. 8.1 - Identify the color bands for each of the following...Ch. 8.1 - A 680- resistor has a rated tolerance of 10...Ch. 8.1 - What is the color code for a 365- five-band...Ch. 8.1 - Determine the resistance value and percentage of...Ch. 8.1 - Determine the resistance value and percentage of...Ch. 8.2 - Calculate the total resistance for each of the...
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