Transformers, Electrical Engineering

Assignment Help:

Three transformers are provided with the following rating values:

1) 2400/240 V, 55kVA, Req1 = (0.1 + 0.0Y) Ohm and Xeq1 = (0.15 + 0.XX) Ohm.

2) 240/120 V, 25kVA, Req1 = (0.15 + 0.0Y) Ohm and Xeq1 = (0.30 + 0.XX) Ohm.

3) 240/120 V, 20kVA, Req1 = (0.20 + 0.0Y) Ohm and Xeq1 = (0.40 + 0.XX) Ohm.

All impedances are referred to the 240 V side. Transformer no. 1 can be operated as an autotransformer (Notice; the equivalent impedance as an autotransformer is calculated by dividing the original impedance over the turn's ratio of the autotransformer).

A 240 V, 60 kW, 0.9 power factor lagging load is to be supplied by the above transformers. The load will be connected for one full week, and the energy cost is 0.10 SR / kWh. As it can be observed, the load has to be supplied by a combination of the transformers. Assume that both 2640 V and 120 V supplies are available.

Determine the best design (best combination) to supply the load so that the operating cost is minimum. Show all the steps in your calculation.

Note:

 "XX" is the 7th and 8th digit of student ID, like (200891XX0).

"Y" is your section number (e.g., 01, 02).


Related Discussions:- Transformers

Enhancement type mosfet, Enhancement type MOSFET In these types of de...

Enhancement type MOSFET In these types of devices operate by comprising a channel enhanced in the semiconductor material in which no channel was constructed, they are termed

Binary multiplication, Q. What do you mean by Binary Multiplication? Th...

Q. What do you mean by Binary Multiplication? The Rules of Binary Multiplication 0 x 0 = 0 0 x 1 = 0 1 x 0 = 0 1 x 1 = 1 , and no carry or borrow

What is peripheral component interconnect, What is a PCI bus? Periphera...

What is a PCI bus? Peripheral Component Interconnect: PCI bus was developed through Intel and introduced in 1993. This is geared specifically to fifth- and sixth-generation sys

Find the minimum number of bits per byte, Q. If it is desired to store Eng...

Q. If it is desired to store English-language writing with 1 byte representing each letter, find the minimum number of bits per byte that could be used. Ans. For the 26 le

Show the force exerted on each is about one million tons, Q. Consider two 1...

Q. Consider two 1-C charges separated by 1min free space. Show that the force exerted on each is about one million tons.

Write some notes for the gauss-seidel method, Write Some Notes for the Gaus...

Write Some Notes for the Gauss-Seidel Method? 1.  Equation below is used to calculate the voltage at each busbar in turn, always using the most up to date values for the other

Evaluate discrete-time signal, Consider the following signals, sketch each ...

Consider the following signals, sketch each one of them and comment on the periodic nature: (a) x(t) = A cos(2πf 0 t + θ), where A, f 0 , and θ are the amplitude, frequency, and

Automotive wiring harness, what are the design consideration for electrical...

what are the design consideration for electrical wiring harness routing

Incorrect Solution, Hi there i just asked for question and answer for 5 cha...

Hi there i just asked for question and answer for 5 chapter and i just receive some of them in word the rest are in apiece of paper which is unprofessional could you please have l

Magnitude comparator, circuit diagram of 2 bit magnitude comparator

circuit diagram of 2 bit magnitude comparator

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd