Voltage starting current

Assignment Help Electrical Engineering
Reference no: EM13877072

A 460-V, three-phase, six-pole, 60-Hz, 150-kW, wound-rotor induction motor develops an internal torque of 190 percent with a line current of 200 percent (torque and current expressed as a percentage of their full-load values) at a slip of 5.6 percent when running at rated voltage and frequency with its rotor terminals short-circuited. The rotor resistance is measured to be 90 mO between each slip ring and may be assumed to remain constant. A balanced set of Y-connected resistors is to be connected to the slip rings in order to limit the rated-voltage starting current to 200 percent of its rated value. What resistance must be chosen for each leg of the Y connection? What will be the starting torque under these conditions?

Reference no: EM13877072

Questions Cloud

Identify advantage of implementing a standard costing system : Identify the advantages of implementing a standard costing system. Explain the role of each of the following persons in developing standards: Purchasing manager.
Write an essay on the topic of greenhousegases : Write an essay about 7 pages long on the topic of GreenhouseGases based on the following pattern: What the topic is about on large
Rotor resistance and inductance : Stator resistance and rotational losses may be neglected, and the rotor resistance and inductance may be assumed to be constant, independent of rotor frequency. Determine
Explain the general features of a standard cost system : Explain the general features and characteristics associated with the introduction and operation of a standard cost system that make it an effective tool for cost control.
Voltage starting current : A balanced set of Y-connected resistors is to be connected to the slip rings in order to limit the rated-voltage starting current to 200 percent of its rated value. What resistance must be chosen for each leg of the Y connection? What will be the ..
Identify the topic as an argumentative issue : Remember that there are key components required for each discussion paragraph. Within each paragraph, you must indicate a topic you extracted from the reading selection. To begin each paragraph, identify the topic as an argumentative issue
Who are not suspected of any drug-oriented activity : What about students in Tecumsah, Oklahoma, who have volunteered to sing in the choir, and who are not suspected of any drug-oriented activity? Do they have the right to resist school drug tests? Check the Supreme Court for 2002
Derive the firm''s trace function : What is the monopolist's profit-maximizing combination of price and quantity and What is the firm's profit?
Six-pole wound-rotor induction motor : A 100-kW, three-phase, 60-Hz, 460-V, six-pole wound-rotor induction motor develops its rated full-load output at a speed of 1158 r/min when operated at rated voltage and frequency with its slip rings short-circuited.

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Is it possible that switches is in open position

If a circuit is comprised of a load and multiple switches wired in series with the load and the load is operating, is it possible that one or more of the switches is in the open position

  Find what is the step response of the filter

Given the digital filter transfer function H(z)=1-z^-1 , what is the step response (that is, the input to the filter is unit step sequence u(n) ) of the filter A. y(n)= delta(n)+delta(n+1) B. y(n)=u(n-1) C. y(n)=u(n)-u(n-1) D. y(n)=u(n-2)

  Examining spectrum anlyser output

Analysing spectrum anlyser output, A spectrum analyzer is connected to an unknown signal. The spectrum analyzer displays the power level of signals in dBm vertically and frequency horizontally. The spectrum of the unknown signal creates the follow..

  Calculate the density of the manometric fluid

A U manometer reads 20 cm air as operating fluid and a given manometric fluid. A single branch closed tube reads 35 cm connected to point 1. If P2 = 1.2 ATM calculate the pressure in point 1 and the density of the manometric fluid.

  The magnetic circuit shown with a mean core length of 52

the magnetic circuit shown with a mean core length of 52 cm and a cross sectional area of 18 cm2. the length of the

  What is the range of doping and pick a doping concentration

Restricting yourself to nondegenerate dopings and also requiring the resistance to be readily measured with a hand-held multimeter (say 1  R 1000), what is the range of doping Pick a doping concentration in the mid range.

  Design and implement a c program to simulate a game

design and implement a C++ program to simulate a game of Blackjack between two to four players. Your program must incorporate a two-dimensional array to represent the suit and the value of each card dealt to a player,

  Impact of electron energy

Briefly discuss the impact of electron energy, electron current and target on the Bremsstrahlung generated.

  The design of the amplifier shall be performed

The design of the amplifier shall be performed for the Fairchild Q2N3904 NPN Transistor. Specifications can be obtained from the datasheet for the Fairchild Q2N3904 and are typically given in a variety of ways. Minimum and maximum operating condition..

  Question 1consider two digital sequenceshere m is a

question 1consider two digital sequenceshere m is a positive integer and is a value in the intervala using the

  Determine the expected value of the net reward

Suppose a fair coin is tossed n times. Each coin toss costs 'd' dollars and the reward in obtaining 'X' heads is aX^2 + bX. Find the expected value of the net reward.

  Show a timing diagram

Use Active HDL to show a timing diagram showing the inputs, outputs, and state (including last A) of the VHDL state machine of the attached design and bench test

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