![EBK FUNDAMENTALS OF ELECTRIC CIRCUITS](https://www.bartleby.com/isbn_cover_images/8220102801448/8220102801448_largeCoverImage.jpg)
Concept explainers
Obtain the equivalent resistance Rab in each of the circuits of Fig. 2.117. In (b), all resistors have a value of 30 Ω.
Figure 2.117
(a)
![Check Mark](/static/check-mark.png)
Calculate the equivalent resistor at terminals a-b in Figure 2.117(a).
Answer to Problem 53P
The equivalent resistor at terminals a-b in Figure 2.117(a) is
Explanation of Solution
Formula used:
Consider the delta to wye conversions.
Here,
Consider the expression for
Here,
Consider the expression for
Calculation:
Refer to Figure 2.117(a) in the textbook For Prob.2.53.
Step 1:
In Figure 2.117(a), convert the delta connection into wye connection.
Consider
Substitute
Substitute
Substitute
Modify Figure 2.117(a) as shown in Figure 1.
Step 2:
In Figure 1, as
Step 3:
In Figure 1, as
Step 4:
In Figure 1, as
Modify Figure 1 as shown in Figure 2.
Step 5:
In Figure 2, as
Modify Figure 2 as shown in Figure 3.
Step 6:
In Figure 3, as
Conclusion:
Thus, the equivalent resistor at terminals a-b in Figure 2.117(a) is
(b)
![Check Mark](/static/check-mark.png)
Calculate the equivalent resistor at terminals a-b in Figure 2.117(b).
Answer to Problem 53P
The equivalent resistor at terminals a-b in Figure 2.117(b) is
Explanation of Solution
Given data:
All resistance have
Formula used:
Consider the following delta to wye conversion, when all branches in a delta consist same value.
Calculation:
Refer to Figure 2.117(b) in the textbook For Prob.2.53.
Step 1:
In Figure 2.117(b), at left most corner of circuit, as two resistors are connected in series, therefore the equivalent resistance for series connected circuit is calculated as follows.
Step 2:
As
Modify Figure 2.117(b) as shown in Figure 4.
Step 3:
In Figure 4, as in upper part of the circuit all three
Substitute
Since all branch values are same in a delta connection that is
Modify Figure 4 as shown in Figure 5.
Step 4:
In Figure 5, as
Step 5:
In Figure 5, as in right most part of the circuit all three
Substitute
Since all branch values are same in a delta connection that is
Modify Figure 5 as shown in Figure 6.
Step 6:
In Figure 6, as
Step 7:
In Figure 6, as
Step 8:
As
Modify Figure 6 as shown in Figure 7.
Step 4:
In Figure 7, as
Conclusion:
Thus, the equivalent resistor at terminals a-b in Figure 2.117(b) is
Want to see more full solutions like this?
Chapter 2 Solutions
EBK FUNDAMENTALS OF ELECTRIC CIRCUITS
Additional Engineering Textbook Solutions
Modern Database Management
Mechanics of Materials (10th Edition)
Starting Out With Visual Basic (8th Edition)
Vector Mechanics for Engineers: Statics and Dynamics
Database Concepts (8th Edition)
Electric Circuits. (11th Edition)
- Solve this experiment with an accurate solution, please. Thank you.arrow_forwardA lossless uncharged transmission line of characteristic impedance Zo = 600 and length T = 1us is connected to a 180 load. If this transmission line is connected at t = 0 to a 90 V dc source with an internal resistance of 900, from a bounce diagram of this system sketch (a) the voltage at z=0, z=L, and z = L/2 for up to 7.25μs and (b) calculate the load voltage after an infinite amount of time.arrow_forwardA lossless uncharged transmission line of length L = 0.45 cm has a characteristic impedance of 60 ohms. It is driven by an ideal voltage generator producing a pulse of amplitude 10V and width 2 nS. If the transmission line is connected to a load of 200 ohms, sketch the voltage at the load as a function of time for the interval 0 < t < 20 nS. You may assume that the propagation velocity of the transmission is c/2.arrow_forward
- The VSWR (Voltage Standing Wave Ratio) is measured to be 2 on a transmission line. Find two values of the reflection coefficient with one corresponding to Z > Zo and the other to Zarrow_forwardA dc voltage of unknown value Vand internal resistance Reis connected through a switch to a lossless transmission line of Zo = 1000. If the first 5 μS of the voltages at z = 0 and z = L are observed to be as shown below, calculate Vo, RG, the load resistanceR,, and the transit time T. 100 + [V]:-0. V 90 [V]:-V 100 75 I, Տ 1,μs 2 4 6 0 2 4 6arrow_forwardA lossless open circuited transmission line behaves as an equivalent capacitance of Ceq = Tan (BL) Show for BL << 1 that Ceq = C'L where L is the length of the transmission line and wZo C' is the lumped parameter capacitance per unit length of the transmission line. Hint: For x small, Tan(x) = x.arrow_forward= A generator with VG 300V and R = 50 is connected to a load R = 750 through a 50 lossless transmission line of length L = 0.15 m. (a) Compute Zin, the input impedance of the line at the generator end. (b) Compute and V. (c) Compute the time-average power Pin delivered to the line. (d) Compute VL, IL, and the time-average power delivered to the load, PL (e) How does Pin compare to PL? Explain.arrow_forwardFor the regulated power supply circuit, assume regular diodes with 0.7V forward drop. Use a 15V (peak), 60Hz sine wave at the transformer secondary and assume a maximum ripple level of 1V. (a) Compute the unknown components needed to design 10V DC supply.Hint: find R first, and then C. What is the ripple level for C=22µF?Sketch the rectified, filtered, and regulated outputsarrow_forwardA) Find the solution of B) Find the convolution of Sewt (t-π)dt 8 e-atu(t)e-blu(t)arrow_forwardConsider the signal: f(t)= 0, ㅠ 1 Use the Fourier transform formula to find F(w). otherwisearrow_forwardA half-wave controlled rectifier is supplied by a 230 Vrms voltage source and has load resistance of 2502. Calculate the delay angle a that produces a load-absorbed power of 200W.arrow_forwardQ6 The FET shown in Fig. 1.43 has gm = 3.4 mS and rd =100 K. Find the approximate lower cutoff frequency. Ans: 735.1 Hz. 25V 1.5ΜΩ 20 ΚΩ 0.02µF HH 2ΚΩ 0.02µF HH 330kQ 820 ΩΣ 1.0µF www 40ΚΩarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- Introductory Circuit Analysis (13th Edition)Electrical EngineeringISBN:9780133923605Author:Robert L. BoylestadPublisher:PEARSONDelmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage LearningProgrammable Logic ControllersElectrical EngineeringISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
- Fundamentals of Electric CircuitsElectrical EngineeringISBN:9780078028229Author:Charles K Alexander, Matthew SadikuPublisher:McGraw-Hill EducationElectric Circuits. (11th Edition)Electrical EngineeringISBN:9780134746968Author:James W. Nilsson, Susan RiedelPublisher:PEARSONEngineering ElectromagneticsElectrical EngineeringISBN:9780078028151Author:Hayt, William H. (william Hart), Jr, BUCK, John A.Publisher:Mcgraw-hill Education,
![Text book image](https://www.bartleby.com/isbn_cover_images/9780133923605/9780133923605_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781337900348/9781337900348_smallCoverImage.jpg)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780073373843/9780073373843_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780078028229/9780078028229_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780134746968/9780134746968_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780078028151/9780078028151_smallCoverImage.gif)