Define required percent impedance of replacement transformer

Assignment Help Electrical Engineering
Reference no: EM13247511

A 500kVA ,7200-240V, 60Hz, transformer with 2.2% impedance was severly damaged as a result of a dead short across secondary terminals. Determine
a) The short-circuit current;
b) the required percent impedance of a replacement transformer that will maintain the low side short current to 60kA

Reference no: EM13247511

Questions Cloud

Explain how many liters of no gas can be produced at stp : how many liters of NO gas can be produced at STP from 80.0 mL of a 4.00 M HNO3 solution and 10.0 g of Cu? 3Cu(s) + 8HNO3(aq) > 3Cu(NO3)2(aq) + 4H2O(l) + 2NO(g)
Give an example from your workplace or personal experience : Give an example from your workplace or personal experience of the law of diminishing marginal productivity. How might managers use the concept of diminishing marginal productivity to improve efficiency?
How would you explain the differences among these market : What are the conditions for the four types of markets (perfectly competitive, monopolistic, monopolistic competitive and oligopolistic market)?
Analyze multicollinearity of the independent variables : Identify and interpret the F test and identify and interpret the t tests for each of the coefficients and analyze multicollinearity of the independent variables
Define required percent impedance of replacement transformer : A 500kVA ,7200-240V, 60Hz, transformer with 2.2% impedance was severly damaged as a result of a dead short across secondary terminals. Determine a) The short-circuit current;
What are the mass percent and moarity for the kcl solution : A solution contains 4.56 g of KCl in 175 mL of solution. if the density of the KCl solution is 1.12 g/mL, what are the mass percent (m/m) and moarity (M) for the KCl solution
Find the magnitude and sign of the point charge : The electric field on the x-axis due to a point charge fixed at the origin is given by E=(b/x^2)i, Find the magnitude and sign of the point charge
A concentration of the acid plus the concentration of salt : you want a solution that will buffer the addition of either 10 micro moles of acid or 10 micro moles of base. total buffer concentration is equal to the concentration of the acid plus the concentration of salt in the acid. which of the following b..
Include the topics you feel comfortable with : Discuss this week's objectives with your team. Include the topics you feel comfortable with, any topics you struggled with, and how the topics relate to your field.

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Calculate the resistor values in the designs for scaling

Frequently, the output of transducers are much smaller than what an A/D converter expects on its input. That would require an amplifier to match it. Sometimes the output does not start at 0V. Usually the minimum reference input voltage of an A/D

  Determine the physical area of the reflector

A small circular parabolic reflector, often referred to as dish, is now being advertised as a TV antenna for direct broadcast. Assuming the diameter of the antenna is 1 meter, the frequency of operation is 3 GHz, and its aperture efficiency is 68%

  What value of series resistance is needed to limit led

An LED is rated at VF=1.6V to 2.0V at IF=20mA. What value of series resistance is needed to limit the LED current to 20mA when this LED is connected to a 32 v peak source (that is, a source having a peak voltage of 32 v)

  Shielding effectiveness with copper also steel at equality

Shielding Effectiveness with copper and steel at equality, Determine the frequency at which two 1 mm thick shields, one made of copper and the other of steel

  Determine the surface charge density on each conductor

Determine the surface charge density on each conductor.

  What is the minimum donor doping required

What is the minimum donor doping required to convert Silicon into a conductor? What is the minimum acceptor doping required to convert Silicon into a conductor?

  Find rates at which heat is absorbed from the hot reservoir

The following heat engines produce power of 95,000 kW. Determine in each case the rates at which heat is absorbed from the hot reservoir and discarded to the cold reservoir. A Carnot engine operates between heat reservoirs at 750 K and 300 K.

  What is the value of the voltage reflection coefficient

A certain lossless transmission line is terminated in a normalized load impedance of ZL,n = 0.5  j2 ohms. Use a Smith Chart to determine the answers to the following questions. Mark the position of the load impedance on the chart and label it ZL.

  Find nd on n side

Built-in voltage for a Si p-n junction is tested to be 0.6 V, NA = 2 X 10^15 cm^-3 on p side. Find ND on n side. (Assume ni = 1 x 10^10 cm^-3; and k*T/q= 0.026 V)

  How to minimize the total number of gates and inverters

Design a circuit that will add either 1 or 2 to a 4-bit binary number N. Let the inputs N3, N2, N1, N0 represent N. The input K is a control signal. The circuit should have outputs M3, M2, M1, M0, which represent the 4-bit binary number M.

  Which current results in the continual interchange of energy

A measurement of the rate at which a capacitor will store a charge on its plates is called The opposition to the flow of current which results in the continual interchange of energy between source and magnetic field is known as

  Determine the minimum required sampling rate

(a) Determine the minimum required sampling rate fsamp(min). Hence, use twice this value. (b) Draw a block diagram of the system indicating the requirements of each block. (c) Design and write the difference equations of the digital filters needed.

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