ELECTRICITY FOR TRADES
3rd Edition
ISBN: 9780078118630
Author: Petruzella
Publisher: RENT MCG
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Chapter 8.1, Problem 3RQ
To determine
Mention the function of resistors used in electrical circuits.
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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
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-line fault currents flowing in circuit breaker B2 for faults at buses 2 and 3 are respectively OA
and 9.53A, then the corresponding faulted phase voltages in pu are equal to:
2
3
5
From To Positive sequence
impedance
B₁
B₂
B3
B4
1
2
0.01+j0.05
2
3
0.003+j0.04
3
4
0.008+j0.04
5
0.01+j0.05
Select one:
O a. 0V, 0.22V
O b. 0V, 0.44V
C.
OV, 0.33V
Od. None of these
Chapter 8 Solutions
ELECTRICITY FOR TRADES
Ch. 8.1 - In what way is resistance wire different from the...Ch. 8.1 - What is the trade name for the most popular type...Ch. 8.1 - Prob. 3RQCh. 8.1 - Name the three ways by which resistors are rated.Ch. 8.1 - Resistors are classified as passive devices. Why?Ch. 8.1 - Identify the type of circuit that generally...Ch. 8.1 - State two functions served by a fusible resistor.Ch. 8.1 - What advantage do film resistors have over...Ch. 8.1 - What are the two configurations for chip...Ch. 8.1 - In what way is the construction of an adjustable...
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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