Question: A single-phase two-winding transformer rated (90 mathrm{MVA}, 80 / 120 mathrm{kV}) is to be connected as an autotransformer rated (80 / 200 mathrm{kV}). Assume that

A single-phase two-winding transformer rated $90 \mathrm{MVA}, 80 / 120 \mathrm{kV}$ is to be connected as an autotransformer rated $80 / 200 \mathrm{kV}$. Assume that the transformer is ideal.

(a) Draw a schematic diagram of the ideal transformer connected as an autotransformer, showing the voltages, currents, and dot notation for polarity.

(b) Determine the permissible kVA rating of the autotransformer if the winding currents and voltages are not to exceed the rated values as a two-winding transformer. How much of the $\mathrm{kVA}$ rating is transferred by magnetic induction?

Step by Step Solution

★★★★★

3.45 Rating (152 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Systems Analysis Design Questions!

Euro Corporation, a U.S. corporation, operates through a branch in Germany. During 2022, the branch reported taxable income of $1,000,000 and paid German income taxes of $300,000. In addition, Euro...

A single-phase $10-\mathrm{kVA}, 2300 / 230-$ volt, $60-\mathrm{Hz}$ two-winding distribution transformer is connected as an autotransformer to step up the voltage from 2300 to 2530 volts. (a)...

Thermal Rising, Incorporated, makes paragliders for sale through specialty sporting goods stores. The company has a standard paraglider model, but also makes custom-designed paragliders. Management...

Ms. Mary Tyler Moore, a customer relations representative, was hired by IBM Limited (a Canadian public corporation) on January 10, 2022. Mary's primary function with the company is to respond to...

The motors $M_{1}$ and $M_{2}$ of Problem 3.45 have inputs of 120 and $60 \mathrm{MW}$, respectively, at $13.2 \mathrm{kV}$, and both operate at unity power factor. Determine the generator...

A 4 kVA, 2200/200 V, single-phase two-winding transformer is used as an autotrans- former to raise the supply voltage of 2200 V to an output voltage of 2350 V. The LV winding of the two-winding...

a ) An ideal single - phase two - winding transformer with turns ratio a _ t = N 1 / N 2 is connected with a series impedance Z 2 across winding 2 . If one wants to replace Z 2 , with a series...

(a) An ideal single-phase two-winding transformer with turns ratio $a_{t}=$ $N_{1} / N_{2}$ is connected with a series impedance $Z_{2}$ across winding 2 . If one wants to replace $Z_{2}$,...

QUESTION 3 A \ ( 1 0 \ mathrm { kVA } , 1 2 0 / 4 8 0 \ mathrm { ~V } \ ) single - phase transformer is to be used as an autotransformer to supply a 4 8 0 V circuit from a 6 0 0 V source. When it is...

Three single-phase two-winding transformers, each rated 25 MVA, $34.5 / 13.8 \mathrm{kV}$, are connected to form a three-phase $\Delta-\Delta$ bank. Balanced positive-sequence voltages are...

Question 1 A 50Hzgenerating unit hasH-constant of 2MJ/MVA. The machine is initially operating in steady state at synchronous speed, and producing 1puof real power. The initial value of the rotor...

How does temperature inversion contribute to the formation of valley fog?

Venable Corporation has 750,000 shares of common stock outstanding, which are owned by 640 shareholders. The assets of Venable Corporation are valued at more than $10 million. In March, Underhill...

True or false: Can a Certified Mental Performance Consultants accept alternative forms of payment? If so , what conditions need to be met?

Every year you invest 1,200 for your pension. You started at age 25. How much will you own at 65 if your investment has yielded 4% p.a.? If you wanted to have 200,000, how much would you need to save...

Two transmission articles are presented here. The first article covers transmission conductor technologies including conventional conductors, high-temperature conductors, and emerging conductor...

Rework Problem 4.50 if the diameter of each conductor is: (a) increased by 25 % 25 % to 1.875 c m 1.875 c m , (b) decreased by 25 % 25 % to 1.125 c m 1.125 c m , without changing the phase spacings....

Calculate the capacitance-to-neutral in F / m F / m and the admittance-to-neutral in S / k m S / k m for the line in Problem 4.20. Also calculate the total reactive power in Mvar / k m / k m supplied...

What does the following journal entry indicate? DR: Factory Overhead CR: Rent Expense Group of answer choices Rent expense was added to FOH Rent expense was applied to WIP Rent expense was subtracted...

Hello All, I'm taking a python course at my local community college and just got my first assignment. I haven't taken any python before but the instructor insists on only teaching his curriculum...

Set the webpage's title to "Presidents"