What is the speed at one-quarter of the rated load

Assignment Help Electrical Engineering
Reference no: EM131203097

A three-phase 60-Hz induction motor runs at 715 r/min at no load and at 670 r/min at full load.

(a) How many poles does this motor have?

(b) What is the slip at rated load?

(c) What is the speed at one-quarter of the rated load?

(d) What is the rotor's electrical frequency at one-quarter of the rated load?

Reference no: EM131203097

Questions Cloud

Find the slip speed of the rotor : A 220-V three-phase six-pole 50-Hz induction motor is running at a slip of 3.5 percent.
Find the speed of the rotor in revolutions per minute : A 220-V three-phase six-pole 50-Hz induction motor is running at a slip of 3.5 percent
Determine the length of a copper wire : Using the metric units, determine the length of a copper wire that has a resistance of 0.2 Ω and a diameter of 1/10 in.
Internal realism and epistemology of positivism : My research will be modeled from the ontology of internal realism and epistemology of positivism. This approach will help to establish the relationship between the parameters of prepaid meter deployment, revenue growth and customer satisfaction.
What is the speed at one-quarter of the rated load : A three-phase 60-Hz induction motor runs at 715 r/min at no load and at 670 r/min at full load.
What is the thickness of the oxide layer : If the sheet resistance of a tin oxide sample is 100 Ω, - what is the thickness of the oxide layer?
Find the following values for full-load conditions : A 50-kW, 460-V, 50-Hz, two-pole induction motor has a slip of 5 percent when operating a full-load conditions. At full-load conditions, the friction and windage losses are 700 W, and the core losses are 600 W. Find the following values for full-lo..
Determine the width of a carbon resistor : Determine the width of a carbon resistor having a sheet resistance of 150 if the length is 1/2 in. - and the resistance is 500 Ω.
How you would communicate this decision to your employees : Assume that this case happened at a place where you have worked in the past, or where you work now (or want to work.) Give an example of how the decision in the case above could lead to better or worse employee relations in your company.(3--4 Para..

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Find the joint probability density function of y1 and y2

X1 and X2 are two independent Gaussian random variables each with mean zero and unit variance.

  Determine the voltage across each resistor

A series circuit consists of a 220V- source and 10k-ohm, 40k-ohm, and 60k-ohm resistors. Draw the circuit and find the voltage across each resistor.

  Determine the differential voltage gain of the circuit

Determine the differential voltage gain of the circuit and determine the output current of the circuits - What is the current source voltage (VCS)

  Design a circuit which performs error checking on a stack

A stack controller is a digital circuit in a computer that implements last in firstout (LIFO) storage for temporary data. It operates analogously to a stack of plates where you can put a new plate on the top of the stack or you can take a plate of..

  Calculate the marginal probability mass functions

Define X and Y to be two discrete random variables whose joint probability mass function is given as follows: P(X = m, Y = n) = e^7*4^m*3^n?m / m!(n m)! , for m = 0, 1, . . . , n and n = 0, 1, 2, . . . , while P(X = m, Y = n) = 0

  Semiconductor material to construct transistors

• What are three elements, other than the commonly used silicon and germanium, that are used as semiconductor material to construct transistors ?

  Draw a diagram of a complete hydraulic system

Draw a diagram of a complete hydraulic system,

  Calculate the magnetic flux density

Calculate the magnetic flux density (including units) B→ at P, and the flux density when z >> a. (Note that z ≠ ∞ so you cannot say B = 0.) Use back of page if necessary.

  Fourier transform of a 2d matrix

How do I do a Fourier Transform of a 2D Matrix? Specifically, for the space-domain filter given below (assuming the origin is at the center), how do I find its Fourier transform?

  Mathematical modeling of a dc motor

The objective of this laboratory is to determine the mathematical model of a DC motor which will be used in the subsequent labs to control the velocity and position of a physical system.

  Determine complex power before the addition of the capacitor

The addition of a 20-kvar capacitor bank improved the power factor of a certain load to 0.90 lagging. Determine the complex power before the addition of the capacitors, if the final apparent power is 185 kVA.

  What is the maximum irrigation flow rate that could use

Rain harvesting is a means of water conservation. This real-life problem requires computation and critical thinking involving a practical solution. Apply the problem solving approach studied in class to this rain harvesting and irrigation problem.

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