Introductory Circuit Analysis
13th Edition
ISBN: 9780133923919
Author: Boylestad, Robert L.
Publisher: Pearson Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 23, Problem 12P
- If
- for the iron-core transformer in Fig. 23.59 if
- Find the magnitude of the voltage VL and the current IL for the conditions of part (a).
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
. For the iron-core transformer (k == 1) in Fig. 23.58: + E = 40 V √=60H/ N₁ = 20 HANN HA MARE, LA N. = 120 a. Find the magnitude of the induced voltage E. b. Find the maximum flux
A 4800- Vrms transmission line feeds a distribution transformer with 1200 turns on the primary and 28 turns on the secondary . When a 10-Ohm load is connected across the secondary . Find ?
a ) the secondary voltage
3) The results of an open circuit test and a short circuit test
In a 450 kVA transformer, 42000/2400 V, 60 Hz are the following:
Open circuit test
(low voltage side)
VCA = 2400 V
ICA = 18,1 A
PCA = 3785 in
Short circuit test
(High voltage side)
Vcc = 1910 V
Icc = 11,9 A
PCC3850 W
a) Find the equivalent circuit of the transformer referred to the bass side
voltage.
b) Calculate the efficiency of the transformer at full load with a factor of
Power of 0.85 in delay.
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...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
For the “tank” circuit in Fig. 14.79, find the resonant frequency.
Figure 14.79
For Probs. 14.39, 14.71, and 1...
Fundamentals of Electric Circuits
With respect to the circuit in Fig. 5.90, (a) employ Thévenin’s theorem to determine the equivalent network see...
Loose Leaf for Engineering Circuit Analysis Format: Loose-leaf
The current source in the circuit shown generates the current pulse
Find (a) v (0); (b) the instant of time gr...
Electric Circuits. (11th Edition)
What is the color code for a 365- five-band precision resistor with a tolerance of 5 percent?
ELECTRICITY FOR TRADES (LOOSELEAF)
Analog Voltmeter Design Figure P2-98(a) shows a voltmeter circuit consisting of a D'Arsonval meter, two series ...
ANALYSIS+DESIGN OF LINEAR CIRCUITS(LL)
Three point charges of equal magnitude q, that will yield a zero net electric field at the origin.
Engineering Electromagnetics
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 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?arrow_forwardQ25/ (b) A transformer takes a current of 0.8A, when its primary is connected to a 215V, 50Hz supply, the secondary being open circuited. If the power absorbed is 65watts, determine (i) the core loss current(Ic) (ii) the power factor on no-load and (iii) the magnetizing current(Im)arrow_forward
- In a three-phase step-down transformer with 150 kVA, 2080/208 V 60 Hz Y / Y connected R1 = 0.45 ohm, X1 = 2.2 ohm, R2 = 4.5 mohm, X2 = 22 mohm, Rc = 10 kohm, Xm = 8 kohms. When installed at 120 kVA, 90 kW back power factor, if the voltage at the load ends is at its nominal value, a) Primary side terminal voltage b) Yield (efficiency) c) Calculate the voltage regulation value?arrow_forwardII.) The number of turns on the primary and secondary windings of a single-phase transformer are 350 and 38 respectively. If the primary winding is connected to a 2.2 kV, 50-Hz supply, determine (a) the secondary voltage on no-load, (b) the primary current when the secondary current is 200A at 0.8 p.f. lagging, if the no-load current is 5 A at 0.2 p.f. lagging, (c) the power factor of the primary current. [239 V; 25-65 A; 0.715 lag]arrow_forwardThe 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?arrow_forward
- 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.arrow_forwardThe no-load loss of a transformer at rated voltage is 100 watts at 30 Hz and 300 watts at 60 Hz. What is the hysteresis loss at 60 Hz and rated voltage?* 100 W 125 W 164 W 195 W The percent impedance of a 115 kV transmission line is (3.8 + j 15.1) % at 100 MVA base. What is its ohmic impedance?* 5.0186 + j 17.66 Ω 4.0335 + j 18.54 Ω 5.0255 + j 19.97 Ω 4.0938 + j 20.13 Ω To monitor the voltage of a 230 kV line, PTs are to be installed. The PTs are to be connected delta-delta. The desired secondary voltage is 115 V, 3-phase. What shall be the PTs voltage ratio?* 280 kV/175 V 220 kV/110 V 250 kV/150 V 230 kV/115 Varrow_forwardQ29. A 800 kVA transformer has a primary winding resistance of 0.8Ω and a secondary winding resistance of 0.003 Ω. The iron loss is 2.8 kW and the primary and secondary voltages are 4.5kV and 310V respectively. If the power factor of the load is 0.84 determine the efficiency of the transformer for full load Q30. Use the same data given in the above problem Q29, calculate the efficiency of the same transformer for one third of the load.arrow_forward
- Q29. A 800 kVA transformer has a primary winding resistance of 0.8Ω and a secondary winding resistance of 0.003 Ω. The iron loss is 2.8 kW and the primary and secondary voltages are 4.5kV and 310V respectively. If the power factor of the load is 0.84 determine the efficiency of the transformer for full loadarrow_forwardA 10 kVA three-phase transformer is loaded with a back power factor of 0.9, while the loading ratio is 50% and operates at maximum efficiency. The primary interphase voltage of this transformer is 10kV and it is delta connected. The equivalent circuit iron resistance reduced to the primary is 500 kiloOhms. What is the percent efficiency of the transformer when operating under the specified load? a) 88.24 b)78.95 c)85.71 d)83.33 e)92.31arrow_forwardA 75 kVA, 13.2 kV/240 V delta-wye distribution transformer has a resistance of 1% pu and reactance of 8% pu. What is the transformer s phase impedance referred to the high voltage side? " A. 69.70 + j557.57 ohms B. 67.95 + j543.63 ohms C. 71.09 + j558.72 ohms D. 70.58 + j564.54 ohmsarrow_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