Figure Q5(a) shows a symmetrical set of three-phase currents that are applied to an induction machine...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Figure Q5(a) shows a symmetrical set of three-phase currents that are applied to an induction machine represented by the schematic diagram of Fig Q5(b). Positive current is assumed to flow into the unprimed end of each stator winding and out of the primed end, and vice versa. (i) For the condition where wt=90°, sketch an accurate phasor diagram showing the MMF for each stator winding, and the resulting airgap MMF. (ii) Derive a mathematical expression for the airgap MMF. (iii) If the currents supplied to the red and yellow phases are interchanged, derive a mathematical expression for the resulting airgap MMF, and explain what effect this would have on the operation of the machine. R R stator 0.5 B wt () rotor 18 60 270 B -0.5 R (a) (b) Figure Q5: Three-phase induction machine amplitude (pu) Figure Q5(a) shows a symmetrical set of three-phase currents that are applied to an induction machine represented by the schematic diagram of Fig Q5(b). Positive current is assumed to flow into the unprimed end of each stator winding and out of the primed end, and vice versa. (i) For the condition where wt=90°, sketch an accurate phasor diagram showing the MMF for each stator winding, and the resulting airgap MMF. (ii) Derive a mathematical expression for the airgap MMF. (iii) If the currents supplied to the red and yellow phases are interchanged, derive a mathematical expression for the resulting airgap MMF, and explain what effect this would have on the operation of the machine. R R stator 0.5 B wt () rotor 18 60 270 B -0.5 R (a) (b) Figure Q5: Three-phase induction machine amplitude (pu)
Expert Answer:
Related Book For
Posted Date:
Students also viewed these accounting questions
-
Three forces are applied to an object, as shown in the figure. Find the magnitude and direction of the sum of the forces. |F,| = 100 lb F = 60 lb 45 30 60 F = 150 lb
-
Two forces FA and FB are applied to an object whose mass is 8.0 kg. The larger force is FA. When both forces point due east, the objects acceleration has a magnitude of 0.50 m/s2. However, when FA...
-
The figure shows a schematic diagram of a defective eye. What is this defect called?
-
It happens all too often. As a market researcher, you slave away for countless hours in pursuit of insightful data but, to your shock, your research report flops and your data are dead in the water....
-
Marmon Drilling Limited leases property on which oil has been discovered. Wells on this property produced 21,000 barrels of oil during the current year and it was sold at an average of $85 per...
-
There are two elementary schools in a town. School A has 500 students, and school B has 1000 students. a. At which school is it more likely that 55% or more of the students will be girls? b. At which...
-
Your company sells $100,000 of goods and you collect sales tax of 3%. What current liability does the sale create? a. Accounts Payable of $3,000 b. Unearned Revenue of $3,000 c. Sales Revenue of...
-
Specialized Bicycle Components, Inc. (SBC) caters to the experienced cyclist. In this video, SBC's brand manager explains the company's segmentation and pricing strategy. 1. Review the tactical...
-
The eText describes various types of strategies that can be used by organizations. These strategies include: Growth or expansion strategies. Concentrate resources strategies, for increased leverage....
-
Table B. 4 presents data for 27 houses sold in Erie, Pennsylvania. a. Fit a simple linear regression model relating selling price of the house to the current taxes $\left(x_{1} ight)$. b. Test for...
-
The COVID-19 pandemic has created tremendous fad and uncertainty, affecting the mental health of all employees worldwide, business and enterprise. Due to the novel, coronavirus employees working...
-
Bob owns a rental property that he bought several years ago for $250,000. He has taken depreciation on the house of $35,000 since buying it. He sells it in 2016 for $290,000. His selling expenses...
-
2. Identify these muscles highlighted in the image below, that acting together flex the neck, and acting individually draw the head to the same side shoulder? (1 point) 3. Identify the name given to...
-
Emmet Company has entered into an agreement with its creditor, Roberts Corporation. Roberts has agreed to change the terms of the debt that Emmet is obligated to where Roberts forgives the accrued...
-
Required information Loretto Outfitters is a retail chain of stores organized into two divisions (East and West) and a corporate headquarters. Corporate planners have prepared financial operating...
-
Three vectors, labelled A-C, are shown below. A new vector, named vector D, is defined by an equation in the picture. Describe the general direction of vector D. 100 = B + - A
-
Currently the risk-free rate equals 5% and the expected return on the market portfolio equals 11%. An investment analyst provides you with the following information: Expected Return Stock A Beta 1.33...
-
In the simple quantity theory of money, what will lead to an increase in aggregate demand? In monetarism, what will lead to an increase in aggregate demand?
-
Starting from rest, two skaters push off against each other on smooth level ice, where friction is negligible. One is a woman and one is a man. The woman moves away with a velocity of +2.5 m/s...
-
The drawing shows a circuit that contains a battery, two resistors, and a switch. What is the equivalent resistance of the circuit when the switch is (a) Open and (b) Closed? What is the total power...
-
Two isotopes of a certain element have binding energies that differ by 5.03 MeV. The isotope with the larger binding energy contains one more neutron than the other isotope. Find the difference in...
-
If the correlation coefficient is equal to 0, the slope of the least-squares regression line will be equal to _____________________ . In Exercises 57, fill in each blank with the appropriate word or...
-
In Exercises 1316, compute the least-squares regression line for the given data set. xy 1 2 3 5 5 6 9 7
-
In Exercises 1316, compute the least-squares regression line for the given data set. x 42 36 14 18 23 36 17 y 72 68 25 31 42 42 65 32
Study smarter with the SolutionInn App