"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?

"Solve the following equations:x2 + 7x + 10x2 + 5x - 24"

"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...

"Thirty seniors at Council High School were randomly selected and are asked to report age (in years) and mileage of their primary vehicles. Here are the data that were collected:R denotes an observation with a large standardized residualX denotes an observation whose X value gives it large influence.(a) Describe the relationship between vehicle age and mileage. Include a comment on the strength of association.(b) Determine the slope of the least-square line. Int...

"The plant Chloroplastia centruniversiae appears in two forms in the woods individuals has all green or all white leaves. The white leaf form lives for only three days as it cannot photosynthesize. All C. centruniversiae seeds germinate, produce leaves within 1 day, and one day later are flowering; thus white and green leafed individuals can cross and produce F1.Chlorophyll biosynthesis is dependent upon the expression of the C gene. The X gene encodes a transcription factor require...

Given: Selling price per unit, $20; total fixed expenses, $5,000; variable expenses per unit, $15.Find break-even sales in units.

"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."

"The cost, in millions of dollars, to remove x % of pollution in a lake modeled bya. What is the cost to remove 75% of the pollutant?b. What is the cost to remove 90 % of the pollutant?"

"1.Assume initially all firms that produce a product X in a perfectly competitive market earn normal profit. There is a drop in consumers' preference for X such that the market demand decreases.(i) What will happen to all the firms in the short run equilibrium? Explain with a suitable industry and firm diagram.(ii) How would the firms adjust to the long run equilibrium? Explain with a suitable industry and firm diagram.2.Explain with the aid of a diagram why monopoly i...

1.Record the following transactions in the general journal. Use ONLY these account titles: Cash; Accounts Receivable; Supplies; Equipment; Accounts Payable; YOUR NAME, Capital; YOUR NAME, Drawing; Service Revenue; Rent Expense; Supplies Expense; Utilities Expense.

A bag contains 5 blue balls and 8 purple balls. If 3 balls are chosen randomly and without replacement, form the bag. Let x be the number of blue balls obtained. Then x has a distribution.(a) Poisson(b) Geometric(c) Normal(d) Binomial(e) Hypergeometic