Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 27, Problem 5RQ
What is an autotransformer?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
What is an autotransformer? What is the difference between autotransformer and a two winding
transformer?
Explain the construction and types of autotransformers.
State the various applications of an autotransformer.
Hello I hope you are doing well, this question has been answered many times on bartleby, please don't copy, I want a new solution and more clarification of the solution, use the keyboard, don't use handwriting please
5) A flyback converter has an input of 45 V, an output of 15 V, a duty ratio of 0.4, and a
switching frequency of 80 kHz. The load resistor is 15 Q.
(a) Determine the transformer turns ratio.
(b) Determine transformer magnetizing inductance Lm such that its maximum current is
120% of its average current.
Chapter 27 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 27 - What is a transformer?Ch. 27 - What are common efficiencies for transformers?Ch. 27 - What is an isolation transformer?Ch. 27 - All values of a transformer are proportional to...Ch. 27 - What is an autotransformer?Ch. 27 - What is a disadvantage of an autotransformer?Ch. 27 - Explain the difference between a step-up and a...Ch. 27 - A transformer has a primary voltage of 240 V and a...Ch. 27 - A transformer has an output of 750 VA. The primary...Ch. 27 - A transformer has a turns ratio of 1:6. The...
Ch. 27 - What do the dots shown beside the terminal leads...Ch. 27 - A transformer has a primary voltage rating of 240...Ch. 27 - If the windings of the transformer in Question 12...Ch. 27 - The primary leads of a transformer are labeled 1...Ch. 27 - You are working in an industrial plant. You must...Ch. 27 - You have been given a transformer to install on a...Ch. 27 - EP120VIPNP300TurnsRatioEs24IsNsZ=3Ch. 27 - EP240VIPNPRatioEs320VIsNs280Z=500Ch. 27 - EPIPNPRatio1:2.5Es160VIsNs80TurnsZ=12Ch. 27 - Prob. 4PPCh. 27 - Prob. 5PPCh. 27 - ES480VIPNS275turnsRatioESISNS525turnsZ=1.2kCh. 27 - ...Ch. 27 - ...
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
- Electrical Engineering AC input= 120V rms. Transformer Ratio = 15:1. Reference Voltage = 6.3V. R load = 56 Ohms. Ambient temperature (TA) = 25 degrees C. Vpeak 2N3904 Transistor Regulated Output Rload AC Input Reference Voltage How much power is dissipated by the transistor? How much current is flowing in the transformer primary winding?. Of the regulator types discussed in class, what type of regulator is this? (be specifi HE Leeetarrow_forwardWhat is use of solenoid coil in the pressure to converter? a. To produce magnetic field in the LVDT b. To change the LVDT output c. To bring back the pivoted beam normal position d. To produce linear displacement in bellowsarrow_forward2. The parameters of a certain transformer are to be found. Following the procedure as outlined in the introduction under the first order low frequency model section: The resistance of the primary winding of a certain transformer is found to be R1 = 388 Q, while the resistance of the secondary winding is R, = 0.9 Q. A 200 Hz, 5 volt peak-to-peak sinusoid, V1, is applied to the primary while the secondary is left open-circuited. The primary current, I,, entering at the dot is measured to be 1.07 milliamps peak-to-peak, lagging the voltage by nearly 83°. The open circuit voltage across the secondary, V20c, is measured to be 0.155 volts peak-to-peak. The sinusoid driving the primary is removed and a 200 Hz, 5 volt peak-to-peak sinusoid, V2, is applied to the secondary while the primary is left open-circuited. The secondary current, I2, entering at the dot is measured to be 206 milliamps peak-to-peak, lagging the voltage by 87°. From these measurements, estimate the self-inductances, L,…arrow_forward
- What Is CNC Machining? How does it work?arrow_forward4.) A transformer has a primary coil with 300 windings, and secondary coil has 400 windings. The input AC power supply is 120 volts (Vrms). A) Is this a step-up or step-down transformer? B) What is the rms voltage across the output terminals (Vrms)? C) What is the peak voltage across the output terminals (Vmax)? Primary Secondary imm ac inputarrow_forwardDetermine the regulation of a transformer in which thepercentage resistance drop is 1% and the percentagereactance drop is 5% when the power factor 0.8 leading.arrow_forward
- low shows the circuit diagram of the linear variable differential transformer (LVDT). Figure 2 The primary coil is sinusoidally excited. (e) Clearly explain its operation when the core is moved from side to side (b) Given that the excitation frequency is much higher than the frequency of movement of the core, draw waveforms to show the output voltage for the following displacement waveforms. Xi Comment on your output waveforms.arrow_forwardhow to do a transformer empty and short-circuit test, what are the most important parameters and how to obtain them in a practical way.arrow_forwardhelp me in these questions pls write the questions with the and by (Computer) 1-Which of the following statements INCORRECTLY explain the label in the figure about LVDT working principles? a. Secondary coils are connected in series in such a way that their output is opposing each other. b. Constant DC voltage input to primary coil. c. Displacement moves ferrous rod from central position. d. The difference of the output voltage between the two secondary voltage.==========2- Explain the working principle of the measurement system in the figure below.i. Force input that is supplied to the sensor is processed to give the response in the form of raw output signal.ii. Signal conditioner manipulated the weak signal to give a conditioned input.iii. Analog or digital indicator display the unit that gives output reading of quantity being measured.iv. Measured value is compared with the input value for further action. a. ii, iii and iv only. b. i, ii and iv only. c. i, ii and…arrow_forward
- What is the purpose of connecting a transformer before the rectifier in a source?arrow_forward3. An 100-kVA, 2500/125-V, 50-Hz, step-down transformer has the following parameters: R₁ = 1.52, X₁ = 2.8 2. : R₂ = 15 m , : X₂ = 20m2,: Re - 3k, and: Xm 5 KQ. The transformer delivers 85% of the rated load at a terminal voltage of 110 V and a power factor of 0.866 lagging. Use the approximate circuit referred to as the primary. a. Determine the efficiency of the transformer. b. And the voltage regulation Tarrow_forward11- The output current corresponding to maximum efficiency for a transformer having core loss of 100 W and equivalent resistance referred to sccondary of 0.25 2 is .. ampere. a- 20 b-25 c- 5 d- 400arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
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