ANALYSIS+DESIGN OF LINEAR CIRCUITS(LL)
8th Edition
ISBN: 9781119235385
Author: Thomas
Publisher: WILEY
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Textbook Question
Chapter 2, Problem 2.43P
Find
in Figure P2—43 when the switch is open. Repeat when the switch is closed.
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Students have asked these similar questions
Q2.
a) Two three-phase transformers, designated A and B, have the following
secondary equivalent circuit parameters per phase:
R₁ = 0.002 Q, XA = 0.03 Q, RB = 0.004 Q, X = 0.012 Q
Transformer A is 250 kVA and transformer B is 450 kVA. Calculate how
they share a load of 650 KVA when connected in parallel (assume the
voltage ratios are equal)
b) A step-up transformer is being specified for the beginning of a 3-phase, 4
wire high voltage transmission line. Discuss your recommendation for the
configuration of the transformer connections on both the primary and
secondary side of the transformer.
c)
Define power system protection and describe its fundamental purpose.
Discuss the following key concepts including discrimination, stability,
speed of operation, sensitivity, and reliability in the context of the power
system protection components and schemes.
Q3.
a) Given the unsymmetrical phasors for a three-phase system, they can be
represented in terms of their symmetrical components as follows:
[Fa]
[1 1
Fb = 1 a²
[Fc.
11[Fao]
a Fai
1 a a2F a2-
where F stands for any three-phase quantity. Conversely, the sequence
components can be derived from the unsymmetrical phasors as:
[11 1] [Fal
Faol
Fa1 =
1 a a² F
1 a²
a
a2.
Given the unbalanced three-phase voltages:
V₁ = 120/10° V, V₂ = 200/110° V, V = 240/200° V
Calculate in polar form the sequence components of the voltage.
Complete the table of values for this circuit:
Chapter 2 Solutions
ANALYSIS+DESIGN OF LINEAR CIRCUITS(LL)
Ch. 2 - Prob. 2.1PCh. 2 - The voltage across a particular resistor is 8.60 V...Ch. 2 - You can choose to connect either a 4.7-k resistor...Ch. 2 - A model railroader wants to be able to...Ch. 2 - A 100-k resistor dissipates 50mW. Find the current...Ch. 2 - The conductance of a particular semiconductor...Ch. 2 - In Figure P2—7 the resistor dissipates 25 mW. Find...Ch. 2 - In Figure P2—8 find Rx and the power supplied by...Ch. 2 - A resistor found in the lab has three orange...Ch. 2 - The iv characteristic of a nonlinear resistor is...
Ch. 2 - A 100-k resistor has a power rating of 0.25 W....Ch. 2 - A certain type of film resistor is available with...Ch. 2 - Figure P2—13 shows the circuit symbol for a class...Ch. 2 - A thermistor is a temperature-sensing element...Ch. 2 - In Figure P2-15i2=6A and i3=2A. Find i1 and i4.Ch. 2 - In Figure P2-16 determine which elements are in...Ch. 2 - For the circuit in Figure P2—17: Identify the...Ch. 2 - In Figure P2-17 i2=30mA and i4=20mA. Find i1 and...Ch. 2 - For the circuit in Figure P2—19: Identify the...Ch. 2 - In Figure P2-19 v2=20V,v3=20V, and v4=6V. Find...Ch. 2 - In many circuits the ground is often the metal...Ch. 2 - The circuit in figure P2-22 is organized around...Ch. 2 - Are any of the elements in Figure P2-23 in series...Ch. 2 - Are any of the elements in Figure P2-24 in series...Ch. 2 - Use the passive sign convention to assign voltage...Ch. 2 - If a wire is connected between nodes B and C in...Ch. 2 - The KCL equations for a three-node circuit are as...Ch. 2 - For the circuit in Figure P2—28, write a complete...Ch. 2 - For the circuit in Figure P2—29, write a complete...Ch. 2 - Find vx and ix in Figure P2-30. Compare the...Ch. 2 - A modeler wants to light his model building using...Ch. 2 - Find vx and ix in Figure P2-32.Ch. 2 - In Figure P2-33: Assign a voltage and current...Ch. 2 - Find vO in the circuit of Figure P2-34.Ch. 2 - Find the power provided by the source in Figure...Ch. 2 - Figure P2-36 shows a subcircuit connected to the...Ch. 2 - In Figure P2-37 ix=0.33mA. Find the value of R.Ch. 2 - Figure P2—38 shows a resistor with one terminal...Ch. 2 - Find the equivalent resistant REQ in Figure P2-39.Ch. 2 - Find the equivalent R EQ in Figure P2-40.Ch. 2 - Find the equivalent resistance REQ in Figure...Ch. 2 - Equivalent resistance is defined at a particular...Ch. 2 - Find REQ in Figure P2—43 when the switch is open....Ch. 2 - Find REQ between nodes A and B for each of the...Ch. 2 - Show how the circuit in Figure P2—45 could be...Ch. 2 - In Figure P2-46 find the equivalent resistance...Ch. 2 - In Figure P2-47 find the equivalent resistance...Ch. 2 - Select a value of RL in Figure P2-48 so that...Ch. 2 - Using no more than four 1-k resistors, show how...Ch. 2 - Do a source transformation at terminals A and B...Ch. 2 - For each of the circuits in Figure P2-51, find the...Ch. 2 - In Figure P2-52, the iv characteristic of network...Ch. 2 - Select the value of Rx in Figure P2-53 so that...Ch. 2 - Two 10-k potentiometers (a variable resistor whose...Ch. 2 - Select the value of R in Figure P2-55 so that...Ch. 2 - What is the range of REQ in Figure P2-56?Ch. 2 - Find the equivalent resistance between terminals A...Ch. 2 - Use voltage division in Figure P2-58 to find...Ch. 2 - Use voltage division in Figure P2-59 to obtain an...Ch. 2 - Use current division in Figure P2-60 to find...Ch. 2 - Use current division in Figure P2-61 to find an...Ch. 2 - Find ix,iy, and iz in Figure P2-62.Ch. 2 - Find vO in the circuit of Figure P2-63.Ch. 2 - You wish to drive a 1-k load from your car battery...Ch. 2 - Find the range of values of vo in Figure P2-65.Ch. 2 - Use current division in the circuit of Figure...Ch. 2 - Figure P2-67 shows a voltage bridge circuit, that...Ch. 2 - A Ideally, a voltmeter has infinite internal...Ch. 2 - Select values for R1,R2, and R3 in Figure P2-69 so...Ch. 2 - Select a value of Rx in Figure P2-70 so that...Ch. 2 - Select a value of Rx in Figure P2-71 so that...Ch. 2 - Use circuit reduction to find vx and ix in Figure...Ch. 2 - Use circuit reduction to find vx,ix, and px in...Ch. 2 - Use circuit reduction to find vx and ix in Figure...Ch. 2 - Use circuit reduction to find vx,ix, and px in...Ch. 2 - Use circuit reduction to find vx and ix in Figure...Ch. 2 - Use source transformation to find ix in Figure...Ch. 2 - Select a value for Rx so that ix=0A in Figure...Ch. 2 - Use source transformations in Figure P2-79 to...Ch. 2 - The current through RL in figure P2-80 is 100mA....Ch. 2 - Select Rx so that 50 V is across it in Figure...Ch. 2 - The box in the circuit in Figure P2-82 is a...Ch. 2 - A circuit is found to have the following element...Ch. 2 - Consider the circuit of Figure P2-88. Use MATLAB...Ch. 2 - Nonlinear Device Characteristics The circuit in...Ch. 2 - Prob. 2.92IPCh. 2 - Center Tapped Voltage Divider Figure P2-93 shows a...Ch. 2 - Active Transducer Figure P2-95 shows an active...Ch. 2 - Programmable Voltage Divider Figure P2-97 shows a...Ch. 2 - Analog Voltmeter Design Figure P2-98(a) shows a...Ch. 2 - MATLAB Function for Parallel Equivalent Resistors...
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