Introductory Circuit Analysis
13th Edition
ISBN: 9780133923919
Author: Boylestad, Robert L.
Publisher: Pearson Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 23, Problem 27P
To determine
(a)
The load voltage and load currentfor the multiple load transformers.
To determine
(b)
The impedance
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A 5,000-kVA, 3-phase transformer, 13.2/33-kV, A/Y, has a copper loss of 11 kW. The impedance drop at full-load is 7.5%. Calculate the primary voltage when a load of 4000 kW at 0.8 p.f. is delivered at 33 kv.
A 40-kVA, 8000/230-V distribution transformer has an impedance referred to the primary of 18 + j80 Ω. The components of the excitation branch referred to the primary side are Rc = 100 kΩ and Xc = 20 kΩ.
If the primary voltage is 7920 V and the load impedance is ZL = 1.5 + j*0.7 Ω what is the secondary voltage, in volts?
The low voltage side of a particular transformer has 747 turns while its high voltage side has 69471 turns,when connected as a step-up transformer, its secondary impedance is 371907 + J 250821 ohms. What is thenequivalent of this impedance in the primary side of the transformer?
Chapter 23 Solutions
Introductory Circuit Analysis
Ch. 23 - For the air-core transformer in Fig. 23.57: Find...Ch. 23 - Repeat Problem 1 if k is changed to 1. Repeat...Ch. 23 - RepeatProblem1fork=0.3,NP=300turns,andNS=25turns.Ch. 23 - For the iron-core transformer (k = 1) in Fig....Ch. 23 - RepeatProblem4forNP=240andNS=30.Ch. 23 - Find the applied voltage of an iron-core...Ch. 23 - If the maximum flux passing through the core of...Ch. 23 - For the iron-core transformer in Fig. 23.59: Find...Ch. 23 - Find the input impedance for the iron-core...Ch. 23 - Find the voltage Vg, and the current Ip if the...
Ch. 23 - If VL=240V,ZL=20resistor,Ip=0.05AandNs=50 find the...Ch. 23 - If Np400,Ns=1200andVg=100V,findthemagnitudeofIp...Ch. 23 - For the circuit in Fig. 23.60, find the...Ch. 23 - For the transformer in Fig. 23.61, determine the...Ch. 23 - For the transformer in Fig. 23.61, if the...Ch. 23 - Prob. 16PCh. 23 - Discuss in your own words the frequency...Ch. 23 - Determine the total inductance of the series coils...Ch. 23 - Determine the total inductance of the series coils...Ch. 23 - Determine the total inductance of the series coils...Ch. 23 - Write the mesh equations for the network in Fig....Ch. 23 - Determine the input impedance to the air-core...Ch. 23 - An ideal transformer is rated...Ch. 23 - Determine the primary and secondary voltages and...Ch. 23 - For the center-tapped transformer in Fig. 23.42,...Ch. 23 - For the multiple-load transformer in Fig. 23.43,...Ch. 23 - Prob. 27PCh. 23 - Write the mesh equations for the network of Fig....Ch. 23 - Write the mesh equations for the network of Fig....Ch. 23 - A current transformer has a secondary with 250...Ch. 23 - Generate the schematic for the network in Fig....Ch. 23 - Prob. 32PCh. 23 - Using a transformer from the library find the load...
Knowledge Booster
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
- A single-phase, 50kVA, 2400:240V distribution transformer has an impedance of 0.72+j0.92Ω from the high voltage winding and 0.007+j0.009Ω from the low voltage winding. This transformer is supplied by a feeder whose impedance is 0.3+j1.6Ω. Determine the voltage at the emitter terminal of the feeder when the load connected to the transformer secondary draws rated current at 240V with 0.8 lagging power factor. For this case, it is convenient to use the approximate circuit of the transformer given below. PLEASE, TYPE, HAND WRITING GETS UNDERSTANDING,arrow_forwardA 4500/16000V, 1500 kVA, 50 Hz transformer has the following parameters: R1 = 0.03 Ω, R2 = 0.44 Ω, R0 = 1688 Ω X1 = 0.092 Ω, X2 = 1.34 Ω, X0 = 256 Ω The transformer is supplying full- load at power factor of 0.8 lagging. Using exact equivalent circuit, find the input currenarrow_forwardThe parameters of a 1000/250V, 50HZ single phase transformer are: R1=1.3 N, X1=2.8 N, R2=0.11 N, X2=0.2 N, R,=250 N, X,=900 N. If the load voltage is 220V, load power is 10kW, and load power factor is 0.8 lagging. Find by using the exact equivalent circuit: (i) Input current, (ii) The input voltage and power factor, (iii) The magnetizing current, (iv) The copper losses, (v) The voltage regulation.arrow_forward
- A 6.9 kV/600 V, multi-tap, single-phase distribution transformer is connected to the far end of a distribution line for which the rear end voltage is maintained at 6.9 kV. The equivalent impedance of the transformer referred to low voltage side is 0.05 + j0.25 Ω per phase. The impedance of each line is 1 + j2 Ω. It is required to maintain a terminal voltage of 600 V when the line current of 300 A at 80% pf lagging is delivered to the load. What approximate percentage tapping is required in the primary side? Neglect the changes in impedance due to changes in turns ratio. A. 94 % B. 92 % C. 90 % D. 88 %arrow_forwardA 6.9 kV/600 V, multi-tap, single-phase distribution transformer is connected to the far end of a distribution line for which the rear end voltage is maintained at 6.9 kV. The equivalent impedance of the transformer referred to low voltage side is 0.05 + j0.25 Ω per phase. The impedance of each line is 1 + j2 Ω. It is required to maintain a terminal voltage of 600 V when the line current of 300 A at 80% pf lagging is delivered to the load. What approximate percentage tapping is required in the primary side? Neglect the changes in impedance due to changes in turns ratio.arrow_forwardA 10 kVA, 2000/400 V, single-phase transformer has resistances and leakage reactance as; R1 = 5.2 Ω, X1 = 12.5 Ω, R2 = 0.2 Ω, X2 = 0.5 Ω. Determine the value of secondary terminal voltage when the transformer is operating with rated primary voltage with the secondary current at its rated value with power factor 0.8 lag. The no-load current can be neglected. Draw the phasor diagram.arrow_forward
- A 200 kVA, 440/11000 V single phase transformer has an effective impedance of (4 + j9) ohm on the secondary side. Estimate the following : 1) The effective resistance in the primary side in mΩ 2)The effective reactance in the primary side in mΩ 3)The short circuit voltage on the secondary side.arrow_forwardIn a cold storage, cosφ = 0.9 for 8 various motors, the total power of the motors is 48kW, the synchronicity factor of the facility is 0.70, and for lighting, 8 60W, 2 100W incandescent lamps (cosφ = 1) 4 pieces of 125W, 2 pieces of 250W, 3 pieces of 400W sodium vapor lamps (cosφ = 0,8) are used. Find the power of the distribution transformer to be selected. (Norm transformer powers: 50KVA, 100 KVA, 160 KVA, 250KVA, 400 KVA, 630 KVA, 800KVA, 1250KVA, 1600KVA)arrow_forwardA tap-changing transformer has an effective impedance of 0.01+j 0.1 Ω andserves a load which draws an apparent power of 0.9 MVA with 0.8 lagging power factor.If the voltage at load terminals is 1 kV, find the voltage at the source side:(a) With 110% tap located at the load side.(b) With 90% tap located at the source side.(c) With 90% tap located at the load side. ..arrow_forward
- For the 11000/400V, Δ/Y 3-ph transformer, if the line current in the secondary is 500A calculate the line and phase current in the primary.arrow_forwardThe number of turns on the primary and secondary windings of a 1-o transformer are 407 35 respectively. If the primary is connected to a 2.4 kV, 50-Hz supply, determine the secondary voltage on no-load.arrow_forwardA 1100/110V step down single phase transformer has the following parameters. Rc= 2 KΩ, Xm= 1.5 KΩ, R1=4Ω, X1=3 Ω, R2=0.04 Ω, X2=0.03 Ω. If the transformer delivers its output to a load of 5.5 kVA with 0.8 lagging power factor at 110V. Calculate the primary voltage, voltage regulation and the transformer efficiency.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)Electrical EngineeringISBN:9780133923605Author:Robert L. BoylestadPublisher:PEARSON
Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning
Programmable Logic ControllersElectrical EngineeringISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Fundamentals of Electric CircuitsElectrical EngineeringISBN:9780078028229Author:Charles K Alexander, Matthew SadikuPublisher:McGraw-Hill Education
Electric Circuits. (11th Edition)Electrical EngineeringISBN:9780134746968Author:James W. Nilsson, Susan RiedelPublisher:PEARSON
Engineering ElectromagneticsElectrical EngineeringISBN:9780078028151Author:Hayt, William H. (william Hart), Jr, BUCK, John A.Publisher:Mcgraw-hill Education,
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:9780078028229
Author:Charles K Alexander, Matthew Sadiku
Publisher:McGraw-Hill Education
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:9780134746968
Author:James W. Nilsson, Susan Riedel
Publisher:PEARSON
Engineering Electromagnetics
Electrical Engineering
ISBN:9780078028151
Author:Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:Mcgraw-hill Education,
TRANSFORMERS - What They Are, How They Work, How Electricians Size Them; Author: Electrician U;https://www.youtube.com/watch?v=tXPy4OE7ApE;License: Standard Youtube License