Answered step by step

Verified Expert Solution

Link Copied!

Question

1 Approved Answer

Posted on Jul 06, 2021

i) A 470V, 50HZ, 10 pole, 540 rpm, three phase, star connected, squirrel cage induction motor takes a power of 55kW. The total stator

i) A 470V, 50HZ, 10 pole, 540 rpm, three phase, star connected, squirrel cage induction motor takes a power of 55kW. The total stator losses in the machine are 0.8kW and friction & windage losses together are 1.5kW. The operating power factor of the machine is 0.82 lagging. Calculate slip, Air Gap power, Mechanical power developed, Efficiency and Stator current. Suggest how to reduce stator current drawn by the motor from above calculations. (10Marks)

Step by Step Solution

★★★★★

3.52 Rating (152 Votes )

There are 3 Steps involved in it

Step: 1

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

Step: 3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Engineering Economy

Authors: William G. Sullivan, Elin M. Wicks, C. Patrick Koelling

15th edition

132554909, 978-0132554909

More Books

Students also viewed these Electrical Engineering questions

Question

★★★★★

A star connected 6-pole, 50Hz squirrel cage induction motor can be modeled using the approximate per-phase equivalent circuit with the following parameters: The motor is rated at 26 kW. At its rated...

Answered: 1 week ago

Question

★★★★★

A single-phase 240/120 V transformer has the following parameters: R1 = 1; R2= 0.5; X1 =6; X2 = 2; R0 = 500; X0 = 1.5k. A load of 10 at 0.8 power factor lagging is connected across the low-voltage...

Answered: 1 week ago

Question

★★★★★

A DC motor delivers mechanical power to a rotating stainless steel shaft (k = 15.1 W/m·K) with a length of 25 cm and a diameter of 25 mm. In a surrounding with ambient air temperature of...

Answered: 1 week ago

Question

★★★★★

Review how once an IDPS detects an anomalous network situation, it has several options, depending on the policy and objectives of the organization that has configured it as well as the capabilities...

Answered: 1 week ago

Question

★★★★★

What is an amortization schedule? What does each mortgage payment represent?

Answered: 1 week ago

Question

★★★★★

The gear A on the drive shaft of the outboard motor has a radius r A = 0.7 in. and the meshed pinion gear B on the propeller shaft has a radius r = 1.4 in. Determine the magnitudes of the velocity...

Answered: 1 week ago

Question

★★★★★

Cite the characteristics of satisfying intimate relationships.

Answered: 1 week ago

Question

★★★★★

Your company, Acme Widgets, sells its widgets worldwide. Acme has a contract for 250,000 widgets to be shipped to the Czech Republic. The price stated in the offer and acceptance is $1 per widget,...

Answered: 1 week ago

Question

★★★★★

please help im a tab confused! Ch 19 Homework Saved Help Save& Exit Subm Check my work 7 Exercise 19-5 Absorption costing and variable costing income statements LO P2 Rey Company's single product...

Answered: 1 week ago

Question

★★★★★

Case 1: 1-Winston Tremblay, engineer and expert programmer, is very concerned about his next personal income tax return for the 2023 tax year. He is providing you with the following information so...

Answered: 1 week ago

Question

★★★★★

Single plantwide factory overhead rate Spotted Cow Dairy Company manufactures three products-whole milk, skim milk, and cream-in two production departments, Blending and Packing. The factory overhead...

Answered: 1 week ago

Question

★★★★★

Consider an isolated system of two identical electric dipoles as in Figure P25.6. For which orientation is the electric potential energy smaller? Data from Figure P25.6 (a) (b)

Answered: 1 week ago

Question

★★★★★

Does the light bulb in Figure P31.92 light up? Why or why not? Data from Figure P31.92 +

Answered: 1 week ago

Question

★★★★★

Compute the matrix exponential e At for each system x' = Ax given in Problems 9 through 20. x' 1 = 4x 1 + 2x 2 , x' 2 = 2x 1 + 4x 2 Data in Problem 9 through 20 9. x = 5x14x2, x = 2x1-x2 x = 4x14x2...

Answered: 1 week ago

Question

★★★★★

Compute the matrix exponential e At for each system x' = Ax given in Problems 9 through 20. x' 1 = 9x 1 - 8x 2 , x' 2 = 6x 1 - 5x 2 Data in Problem 9 through 20 9. x = 5x14x2, x = 2x1-x2 x = 4x14x2...

Answered: 1 week ago

Question

★★★★★

An object $20 \mathrm{~mm}$ tall is placed $70 \mathrm{~mm}$ to the left of a converging lens that has a focal length of $100 \mathrm{~mm}$. (a) Draw a scale diagram showing the three principal...

Answered: 1 week ago

Question

★★★★★

Please do number 4 in MATLAB code, thankyou! ru) sin(or) 3. Ellipse. Write a program, plotellipse.m, that animates the plotting of the following parametrically defined motion characterized by T and ?...

Answered: 1 week ago

Question

★★★★★

If a test has high reliability. O the test measures what the authors of the test claim it measures O people who take the same test twice get approximately the same scores both times O scores on the...

Answered: 1 week ago

Question

★★★★★

Duncan Jones has made a windfall gain of $50,000. He has come up with three options of investing the money. First, he could dispose of his bachelor pad and buy a house in a nice neighbourhood....

Answered: 1 week ago

Question

★★★★★

The Betterbilt Construction Company designs and builds residential mobile homes. The company is ready to construct, in sequence, 16 new homes of 2,400 square feet each. The successful bid for the...

Answered: 1 week ago

Question

★★★★★

A businessman's profits, earned from his business over the past four years, are shown in the accompanying table. During this time, the CPI has performed as indicated. Determine the annual profit in...

Answered: 1 week ago

Question

★★★★★

Due to the sharp rise in oil prices, the cost of heating a home rose sharply in the winter of 2008. The average cost was $1,044, which was an increase of 33% above that in 2007. In addition to...

Answered: 1 week ago

Question

★★★★★

Given the following null and alternative hypotheses and the following sample information a. If a 0.05, state the decision rule for the hypothesis. b. Test the hypothesis and indicate whether the null...

Answered: 1 week ago

Question

★★★★★

Examine the sample obtained from a normally distributed population: 5.2 10.4 5.1 2.1 4.8 15.5 10.2 8.7 2.8 4.9 4.7 13.4 15.6 14.5 a. Calculate the variance. b. Calculate the probability that a...

Answered: 1 week ago

Previous Question Next Question