Electrical Engineering: Principles & Applications, 7th Edition
7th Edition
ISBN: 9780134485201
Author: Allan R. Hambley
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 4.63P
Repeat Problem P4.61 for R = 20
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Q1) For the circuit shown, find Req
°
R
www
1 ΚΩ
R₁₂
www
470 Ω
Req
R₁₂
2.2 ΚΩ
R₁
www
330 Ω
ΡΩΣΙΚΩ
Q9) A 3-phase Y-connected load is connected to a 3-phase power supply through a 3-phase transmission
line. Each phase of the load has an impedance of 30 +j 20 2. The Line voltage of the supply is 110 <-30°V.
The transmission line impedance per phase is 4+j3 Q.
a) Draw the per phase equivalent circuit of the system.
b) Calculate the load line voltage.
2) Construct a block diagram for finding the result of the following addition
labeling each input and output stage
A=101010
B=110011
Chapter 4 Solutions
Electrical Engineering: Principles & Applications, 7th Edition
Ch. 4 - Suppose we have a capacitance C discharging...Ch. 4 - The dielectric materials used in real capacitors...Ch. 4 - The initial voltage across the capacitor shown in...Ch. 4 - A 100F capacitance is initially charged to 1000 V....Ch. 4 - At t = 0, a charged 10{ F capacitance is connected...Ch. 4 - At time t1 , a capacitance C is charged to a...Ch. 4 - Given an initially charged capacitance that begins...Ch. 4 - The initial voltage across the capacitor shown in...Ch. 4 - In physics, the half-life is often used to...Ch. 4 - We know that a 50F capacitance is charged to an...
Ch. 4 - We know that the capacitor shown in Figure P4.11...Ch. 4 - The purchasing power P of a certain unit of...Ch. 4 - Derive an expression for vC(t) in the circuit of...Ch. 4 - Suppose that at t= 0, we connect an uncharged 10 F...Ch. 4 - Suppose we have a capacitance C that is charged to...Ch. 4 - A person shuffling across a dry carpet can be...Ch. 4 - Prob. 4.17PCh. 4 - Consider the circuit shown in Figure P4.18. Prior...Ch. 4 - List the steps for dc steady-state analysis of RLC...Ch. 4 - Explain why we replace capacitances with open...Ch. 4 - Solve for the steady-state values of i1, i2, and...Ch. 4 - Consider the circuit shown in Figure P4.22. What...Ch. 4 - In the circuit of Figure P4.23, the switch is in...Ch. 4 - The circuit shown in Figure P4.24 has been set up...Ch. 4 - Solve for the steady-state values of i1 , i2, i3,...Ch. 4 - The circuit shown in Figure P4.26 is operating in...Ch. 4 - Prob. 4.27PCh. 4 - Consider the circuit of Figure P4.28 in which the...Ch. 4 - For the circuit shown in Figure P4.29, the switch...Ch. 4 - Consider the circuit of Figure P4.30 in which the...Ch. 4 - Give the expression for the time constant of a...Ch. 4 - A circuit consists of switches that open or close...Ch. 4 - The circuit shown in Figure P4.33 is operating in...Ch. 4 - Consider the circuit shown in Figure P4.34. The...Ch. 4 - Repeat Problem P4.34 given iL(0)=0A .Ch. 4 - Real inductors have series resistance associated...Ch. 4 - Determine expressions for and sketch is(t) to...Ch. 4 - For the circuit shown in Figure P4.38,, find an...Ch. 4 - The circuit shown in Figure P4.39 is operating in...Ch. 4 - Consider the circuit shown in Figure P4.40. A...Ch. 4 - Due to components not shown in the figure, the...Ch. 4 - The switch shown in Figure P4.42 has been closed...Ch. 4 - Determine expressions for and sketch vR(t) to...Ch. 4 - What are the steps in solving a circuit having a...Ch. 4 - Prob. 4.45PCh. 4 - Solve for vC(t) for t > 0 in the circuit of Figure...Ch. 4 - Solve for v(t) for t > 0 in the circuit of Figure...Ch. 4 - Prob. 4.48PCh. 4 - Consider the circuit shown inFigure P4.49. The...Ch. 4 - Consider the circuit shown in Figure P4.50. The...Ch. 4 - The voltage source shown in Figure P4.51 is called...Ch. 4 - Determine the form of the particular solution for...Ch. 4 - Determine the form of the particular solution for...Ch. 4 - Prob. 4.54PCh. 4 - Prob. 4.55PCh. 4 - How can first-or second-order circuits be...Ch. 4 - Prob. 4.57PCh. 4 - Prob. 4.58PCh. 4 - Prob. 4.59PCh. 4 - Sketch a step response for a second-order system...Ch. 4 - A dc source is connected to a series RLC circuit...Ch. 4 - Repeat Problem P4.61 for R = 40 .Ch. 4 - Repeat Problem P4.61 for R = 20 .Ch. 4 - Prob. 4.64PCh. 4 - Repeat Problem P4.64 for R=50 .Ch. 4 - Repeat Problem P4.64 for R=500 .Ch. 4 - Solve for i(t) for t > 0 in the circuit of Figure...Ch. 4 - Prob. 4.68PCh. 4 - Prob. 4.69PCh. 4 - Prob. 4.70PCh. 4 - Use MATLAB to derive an expression for vc(t)in the...Ch. 4 - Prob. 4.72PCh. 4 - Consider the circuit shown in FigureP4.50 in which...Ch. 4 - Prob. 4.74PCh. 4 - Prob. 4.75PCh. 4 - Use MATLAB to solve for the mesh currents in the...Ch. 4 - The switch m the circuit shown in Figure T4.1 is...Ch. 4 - Prob. 4.2PTCh. 4 - Consider the circuit shown in Figure T4.3. Figure...Ch. 4 - Consider the circuit shown in Figure T4.4 in which...Ch. 4 - Write the MATLAB commands to obtain the solution...
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- Q1) For the circuit shown, find Req ° R www 1 ΚΩ R₁₂ www 470 Ω Req R₁₂ 2.2 ΚΩ R₁ www 330 Ω ΡΩΣΙΚΩarrow_forwardQ3) Consider the following 230 V TNC network a) Is the RCD allowed to be used as protection device for this network? Why? b) Assume that the total RPEN = 22 and (each section RPEN1=RPEN2=RPEN3=RPEN4= 0,5 2). Find VFI, VF2, VF3 and VF4- c) Find whether a 20A gG fuse is a correct protection device for the network. d) Find whether a B32 A circuit breaker is a correct protection device for this network. RPENY M RPEN 3 M RPENZ PE REENA MM ML IVF3 VF2 Notice: The faults don't occure at the Same time, but Single.arrow_forwardThe current in the circuit of Figure is 1 mA. For this amount of current, what must the source voltage be? 1.5 ΚΩ I = 1 mA WW+ 1.2 ΚΩ WW+ 5.6 ΚΩ 1.2 ΚΩarrow_forward
- Q2) What is the total capacitance in Figure? What is the voltage across each capacitor? Vs C₂ 5V 330 pF 220 pFarrow_forwardQ2) In the following 220 V TT circuit: a) Find the fault voltage VF b) Find whether a RCD with IAn = 30 mA is a correct protection device for the network. c) Find whether a 20 A gG fuse is a correct protection device for this network. RB 242 L1 N Чл 21-22 R Aarrow_forwardQ1) Consider the following 220 V/50 Hz TN-C network with an isolation fault at Ll. RB1 2-2 RL₁ =RPEN =0,52 LI A PEN B a) Calculate the fault voltage VF b) Now assume that RB2= RB1 is connected between the points A and B. Calculate now the new fault voltage. c) Assume that the device is protected by 35 A gG fuse. In case a) (No RB2): When is the earliest tripping time of the fuse. When is the sure tripping time of the fuse. d) Find whether a B32 circuit breaker is an allowed protection device for this network or not. e) Find whether a C32 circuit breaker is an allowed protection device for this network or not.arrow_forward
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