Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
the output terminsls, calculate the values of IL, ILs, and IL. 1á. The current I = 15/-30° when E = 120/10° in Fig. 15.8c. What will be the %3! current I in Fig. 15-8b if E = 110/40°? 122 25 whon F-110/0° For what yoltage

the output terminsls, calculate the values of IL, ILs, and IL. 1á. The current I = 15/-30° when E = 120/10° in Fig. 15.8c. What will be the %3! current I in Fig. 15-8b if E = 110/40°? 122 25 whon F-110/0° For what yoltage

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
See similar textbooks
icon
Related questions
Question

answer number 12. write your solution pls. 

418 ELECTRICAL CIRCUITS-ALTERNATING CURRENT three impedances: E; = 120/30°, E: = 120/-30°, 21 = 2 ohms (resistance) Z; = 2/90° ohms (inductive reactance), Z = 10/-53.1°. CRlculate the v of the load current It and the voltage across the load, using the superposition theorem. 5. Referring to Fig. 15-2a, interchange the sources of emf E, and E, making E, = 120/-30° and E, 120/30°, and calculate the values of IL, EL, and P, 8. The following particulars are given for the T-network of Fig. 15.4: E = 120/02 Z. = 40 ohms (resistance), Z, = (15.6 + j19.2) ohms (resistance-inductive resc- tance), Z. = -j30 ohms (capscitive reactance), ZL = -j40 ohms (capacitive resctance). Using Thévenin's theorem calculate the current through and the voltage across the load impedance ZL. 7. Using Thévenin's theorem calculate the load current and voltage, given the follow- ing dets: E = 120/0°, Z. = Z, = j9, Z. = 12, Zz = (3.68 - j8.76). (Refer to Fig. 15:4.) 8. Using the dats of Prob. 7, calculate the short-circuit current I, as illustrated in Fig. 15-5, for use in Eq. (145) (page 402); after evaluating this check the load current as determined by Thevenin's theorem in Prob. 7. 9. The following information is given. in connection with Fig. 15-4: E = 120,0°, Z. = 12/-90°, Z, = 12/90°, Z. = 12, ZL = 8.5/45°. Calculate the load er- rent Is and the load voltage EL, using Thévenin's theorem. 20. Solve Prob. 9 using Norton's theorem. 11. Referring to Prob. 9, assume the same values for E, Z,, Z, and Z. If three losd impedances Zı = S.5/45°, ZL: = 8.5/-45°, and Zz: = 8.5/0° are connected to the output terminsls, calculate the values of I Lı, ILa, and IL:. A8. The current I = 15/-30° when E = 120/10° in Fig. 15.8a. Whst will be the current I in Fig. 15-85 if E = 110/40°? 18. In Fig. 15.8a the current I = 4.33 - j2.5 when E 110/0°. For what voltage in Fig. 15.8b will the current I be 6/30°? A. When switch S: is open and switch S, is closed in Fig. 15-9, the currents are I = (8 + j5) and I: (4 -j3). Calculate the current I when switch S: is open and (a) switch S: is closed to the right, and (b) switch S; is closed to the left. 16. A 48-volt battery has an internal resistance of 0.22 ohm and-is connected to a variable-resistance load through a line resistance of 1.28 ohms. For what value of load resistance will the load power be a maximum, snd what will be the loid current, load power, and power loss under this condition? 16. A 228-volt constant-potential generator delivers load to a variable impedance whose values ofR and X are readily adjustable. Assuming a "looking-bsek" impedance of (6 + j4.5) ohms calculate, for maximum load power, (a) the losd impedance, (b) the current, (c) the load power and power factor. 17. If the load in Prob. 16 is a variable resistor calculate, for maximum load power, the load resistance and power. 18. If the load in Prob. 16 contains a constant inductive reactance of 3.5 ohms and a variable resistance, calculate, for maximum load power, (a) the load resistance and impedance, (b) the load current and power. 19. If the load in Prob. 16 contains a constant resistance of 4.8 ohms and a variavie inductive reactance, calculate, for maximum load power, (e) the load reaetance and impedance, (b) the lond current and power. 20. Referring to Fig. 15-13a, transfora the upper delta into an equivalent star determine the total current I as in Example 13.
Transcribed Image Text:418 ELECTRICAL CIRCUITS-ALTERNATING CURRENT three impedances: E; = 120/30°, E: = 120/-30°, 21 = 2 ohms (resistance) Z; = 2/90° ohms (inductive reactance), Z = 10/-53.1°. CRlculate the v of the load current It and the voltage across the load, using the superposition theorem. 5. Referring to Fig. 15-2a, interchange the sources of emf E, and E, making E, = 120/-30° and E, 120/30°, and calculate the values of IL, EL, and P, 8. The following particulars are given for the T-network of Fig. 15.4: E = 120/02 Z. = 40 ohms (resistance), Z, = (15.6 + j19.2) ohms (resistance-inductive resc- tance), Z. = -j30 ohms (capscitive reactance), ZL = -j40 ohms (capacitive resctance). Using Thévenin's theorem calculate the current through and the voltage across the load impedance ZL. 7. Using Thévenin's theorem calculate the load current and voltage, given the follow- ing dets: E = 120/0°, Z. = Z, = j9, Z. = 12, Zz = (3.68 - j8.76). (Refer to Fig. 15:4.) 8. Using the dats of Prob. 7, calculate the short-circuit current I, as illustrated in Fig. 15-5, for use in Eq. (145) (page 402); after evaluating this check the load current as determined by Thevenin's theorem in Prob. 7. 9. The following information is given. in connection with Fig. 15-4: E = 120,0°, Z. = 12/-90°, Z, = 12/90°, Z. = 12, ZL = 8.5/45°. Calculate the load er- rent Is and the load voltage EL, using Thévenin's theorem. 20. Solve Prob. 9 using Norton's theorem. 11. Referring to Prob. 9, assume the same values for E, Z,, Z, and Z. If three losd impedances Zı = S.5/45°, ZL: = 8.5/-45°, and Zz: = 8.5/0° are connected to the output terminsls, calculate the values of I Lı, ILa, and IL:. A8. The current I = 15/-30° when E = 120/10° in Fig. 15.8a. Whst will be the current I in Fig. 15-85 if E = 110/40°? 18. In Fig. 15.8a the current I = 4.33 - j2.5 when E 110/0°. For what voltage in Fig. 15.8b will the current I be 6/30°? A. When switch S: is open and switch S, is closed in Fig. 15-9, the currents are I = (8 + j5) and I: (4 -j3). Calculate the current I when switch S: is open and (a) switch S: is closed to the right, and (b) switch S; is closed to the left. 16. A 48-volt battery has an internal resistance of 0.22 ohm and-is connected to a variable-resistance load through a line resistance of 1.28 ohms. For what value of load resistance will the load power be a maximum, snd what will be the loid current, load power, and power loss under this condition? 16. A 228-volt constant-potential generator delivers load to a variable impedance whose values ofR and X are readily adjustable. Assuming a "looking-bsek" impedance of (6 + j4.5) ohms calculate, for maximum load power, (a) the losd impedance, (b) the current, (c) the load power and power factor. 17. If the load in Prob. 16 is a variable resistor calculate, for maximum load power, the load resistance and power. 18. If the load in Prob. 16 contains a constant inductive reactance of 3.5 ohms and a variable resistance, calculate, for maximum load power, (a) the load resistance and impedance, (b) the load current and power. 19. If the load in Prob. 16 contains a constant resistance of 4.8 ohms and a variavie inductive reactance, calculate, for maximum load power, (e) the load reaetance and impedance, (b) the lond current and power. 20. Referring to Fig. 15-13a, transfora the upper delta into an equivalent star determine the total current I as in Example 13.
NETWORK LAWS, THEOREMS, AND PRINCIPLES e point in a circuit to a second ing from the generator into the circuit, is In any network of bilateral-linear impedances, a shift of a source of voltage 405 accompanied by a corresponding B from one Zo Zb Z. Zc Zc (o) Original circuit (b) Circuit showing shifted generator FIG. 15-8 Diagrams illustrating the reciprocity theorem. Referring to Fig. 15-8a, the equivalent impedance of the network, look- ing from the generator into the circuit, is Z.(Z +ZL) Z + Z. + ZL Z.Z, + Z,Z. + Z.Z. + ZL(Z. + Z) Z, + Z. + ZL Z = Za + %3D %3D and the current is EZ. E Z. %3D Zea^ Z + Z. + ZL ZaZb + ZZ. + Z.Z. + Z1(Z. + Z.) ZaZb + Z.Z. + ZZ. + Z1(Z. + Z.) Za+ Z. Z= Z, + ZL+ Z.Z. %3D %3D Z. + Z. And the current is EZ. 17 + Zz(Z. + Ze) 72
Transcribed Image Text:NETWORK LAWS, THEOREMS, AND PRINCIPLES e point in a circuit to a second ing from the generator into the circuit, is In any network of bilateral-linear impedances, a shift of a source of voltage 405 accompanied by a corresponding B from one Zo Zb Z. Zc Zc (o) Original circuit (b) Circuit showing shifted generator FIG. 15-8 Diagrams illustrating the reciprocity theorem. Referring to Fig. 15-8a, the equivalent impedance of the network, look- ing from the generator into the circuit, is Z.(Z +ZL) Z + Z. + ZL Z.Z, + Z,Z. + Z.Z. + ZL(Z. + Z) Z, + Z. + ZL Z = Za + %3D %3D and the current is EZ. E Z. %3D Zea^ Z + Z. + ZL ZaZb + ZZ. + Z.Z. + Z1(Z. + Z.) ZaZb + Z.Z. + ZZ. + Z1(Z. + Z.) Za+ Z. Z= Z, + ZL+ Z.Z. %3D %3D Z. + Z. And the current is EZ. 17 + Zz(Z. + Ze) 72
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Basic Signals and Its Properties
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS