"Three single-phase step-up transformers rated at 10MVA, 4.6kV/13.8kV are connected in Wye-Delta configuration. The three transformers are used to feed a 20MVA load at 0.9 p.f. With an efficiency of 96%. Using per unit system, calculate: a. the secondary line voltage. b. the primary and secondary line currents when supplying this load. "

Explain what appears to be the improved trade-off between inflation and unemployment in the U.S. What factors might improve the trade-off? What factors would make it worse?

"ldentify an operational improvement initiative in your work area. Using the project management life-cycle framework as a guide, prepare a plan to implement this project. Ensure you discuss the following:a. Prepare a brief project definition document.b. Your plan for managing stockholder input/influencec. What risks might be present and how you intend to manage it.d. Generally how the performance criteria of time, cost and quarity wiil bemanaged/controlle...

"Solve for X, Y, and Z using either substition or elimination methods:22X + 5Y + 7Z = 12; 10X + 3Y + 2Z = 5; 9X + 2Y + 12Z = 14"

"A freshly prepared solution of α-D-glucose shows a specific rotation of +112∘. Over time, the rotation of this solution decreases and reaches an equilibrium value of +52.5∘. In contrast, a freshly prepared solution of β-D-glucose has a specific rotation of +19∘. The rotation of this solution increases over time to the same equilibrium value of +52.5∘.(a) Why do the specific rotations of the freshly prepared samples change over time, and why do they reach the same equilibrium value?...

"A 2.0 kg ball swings in a vertical circle on the end of an 80cm long string. The tension in the string is 20N when its angle from the highest point on the circle is 30 dega. What is the ball’s speed, when angle is 30 deg?b. What is the magnitude of the ball’s acceleration, when angle is 30 deg?c. What is the direction of the ball’s acceleration angle is 30 deg? Give the direction as an angle from the r-axis."

"a) Compute the Earnings before interest and taxes (EBIT) for each level of sales.b) Compute the Earnings per share (EPS) for each level of sales, the expected EPS, the standard deviation of the EPS, and the coefficient of variation of EPS, assuming that there are $10,000 shares of common stock outstanding,c) Tower has the opportunity to reduce its leverage to zero and pay no interest. This will require that the number of shares outstanding be increased to $15,000. Repeat par...

How many years will it take for carbon-14 to diminish to 1% of the original amount after the death of a plant or animal? Use the formula A=A0e(-0.000124t). Compute the answer to three significant digits.

You have been asked to attend the corporate meeting next week to discuss the performance of your division. To help you prepare for the meeting, you requested the following information from the Chief Financial Officer.

Given the payoffs, determine Nash equilibrium, Optimal Strategy, Dominant Strategy and Rational behavior.(a) Consider the game in the following table, where s1a and s2a are strategies available to player1, s1b and s2b are strategies available to player 2, and entries in the table are payoffs to the two players with that of player 1 listed first

"The heat needed to evaporate water from the ocean is about 10 kcal/mole. How many joules of solar energy are consumed in the evaporation of a kg of water from the ocean?2.) Compare the thermal energy stored in atmospheric moisture in question 1 to the gravitational potential energy released when that moisture falls as rain from an altitude of 10 km. (Find and compare these 2 values.)"

"Telecommunication System DesignYou are designing a telecommunications system and need to connect a series of offices (shown as nodes) with fiber optic cable. You have information about which offices need to be connected (following diagram) and the cost for several possible network links.For the nodes shown below, please develop a minimum spanning tree using the greedy algorithm to find the optimal set of links. Specify which links are to be used and the resulting total cost ...