Question: Three single-phase transformers, each rated (10 mathrm{MVA}, 66.4 / 12.5 mathrm{kV}, 60 mathrm{~Hz}), with an equivalent series reactance of 0.1 per unit divided equally between

Three single-phase transformers, each rated $10 \mathrm{MVA}, 66.4 / 12.5 \mathrm{kV}, 60 \mathrm{~Hz}$, with an equivalent series reactance of 0.1 per unit divided equally between primary and secondary, are connected in a three-phase bank. The highvoltage windings are Y-connected and their terminals are directly connected to a $115-\mathrm{kV}$ three-phase bus. The secondary terminals are all shorted together. Find the currents entering the high-voltage terminals and leaving the low-voltage terminals if the low-voltage windings are

(a) Y-connected and

(b) $\Delta$-connected.

Step by Step Solution

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!

TIM produces and sells two products, the MK and the KL. The organisation expects to sell 2 MK for every 2 KLs and have monthly sales revenue of GHe150,000. The MK has a C/S ratio of 20% whereas the...

Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...

In the movie, McFarland USA, in what ways did Jim White and his family initially misinterpret Chicano culture? What did Jim White learn working in the fields? What obstacles did the McFarland...

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...

It is Snapchat A which is found in your course pack. You are to turn in an excel a) excel spreadsheet with formulas for calculations. The spreadsheet should show cash flow, WACC calculation, firm...

1.What is meant by Fayol's principle of'esprit de corps'? 2. Which principle of management implies that there should be 'one head and oneplan' for a group of activities having the same objective? 3....

After completing the Sandlands Vineyards case study, prepare a slide show that answers the following questions: Is the premium wine market an attractive market, or a good place to invest? How is the...

A 250 MVA, 11 kV three-phase generator has a sub transient reactance of 10%. The generator supplies a number of synchronous motors over 64-km transmission line having transformers at both ends, as...

Figure 3.39 shows a oneline diagram of a system in which the three-phase generator is rated $300 \mathrm{MVA}, 20 \mathrm{kV}$ with a subtransient reactance of 0.2 per unit and with its neutral...

Question Three single - phase transformers, each rated at 1 2 kVA, 1 2 0 / 2 4 0 V , 6 0 Hz , are connected to form a three - phase, step - up , Y connection. The parameters of each transformer are ,...

With the success of the pilot program of customer rewards by the fuel/convenience store chain (Fill'erUpSparty), you will help the customers to redeem any awards that they have earned. However,...

Stand Per Suit is 12 LBS at 12 per LB Made 22 suits Brought 150 LBS at 12.50 Per LB Used 135 LBS 1. Find the price var 2. Find the efficiency var 3. Find the quantity variance

An ancient Korean drinking game. An ancient Korean drinking game involves a 14-sided die. The players roll the die in turn and must submit to whatever humiliation is written on the up-face: something...

What is the terminal value on an initial investment of 100 if the investor is seeking a 14% yield to maturity after seven years? AppendixLO1

Repeat Problem 7.24, except place the fault at bus 1. Data From Problem 7.24:- PowerWorld Simulator case Problem 7.24 models the system shown in Figure 7.14 with all data on a 1000-MVA base. Using...

(a) The bus impedance matrix for a three-bus power system is \[\boldsymbol{Z}_{\text {bus }}=j\left[\begin{array}{ccc}0.12&0.08&0.04\\0.08&0.12&0.06\\0.04&0.06& 0.08\end{array} ight] \text { per unit...

Power-flow programs are used to analyze large transmission grids and the complex interaction between transmission grids and the power markets. Historically, these transmission grids were designed...

Last year, Baldwin Corp paid their workers $26.81 per hour. How much will they be paying them 2 rounds from then? Select: 1 $28.15 $28.29 $31.04 $29.56

Given the following tables: EMPLOYEES (EmployeeID, Name, Salary, Age, Highest Degree, DepartmentID) DEPARTMENT (DepartmentID, ManagerID, Location, DepiDescription) Assume that managers are also...

Please, choose one of the three major currency derivatives (future, forward, or an option), briefly define how the derivative is important to an MNE, and in the current economic environment discuss...