A 4-pole, 50 Hz, 415 V, wound-rotor star-connected induction machine has a nameplate and a datasheet with the following parameters: R₁: 0.060, R₂: 0.08 X₁: 0.440 Χή: 0.47Ω Xm: 15.20, (Q4a) | What is the speed (in rpm and rad /sec) of the machine at a slip of 0.04 (4%)? (Q4b) Calculate the starting current of the machine using the simplified equivalent circuit (In the simplified equivalent circuit, you can assume that RT R₁ and XTh~ X₁) ≈ Using the Thevenin equivalent circuit, calculate at what speed this machine generate its (Q4c) maximum torque? (Q4d) What is the maximum torque that the machine can generate at rated voltage? (Q4e) What is the value of the resistance we can connect in the rotor of the machine to get the maximum torque at a slip of 0.55 (55%). (Q4f) What is the following part of the induction machine and what is its practical function? How is the rotor constructed in this machine? Figure 7. Reddit's r/whatisthisthing cannot help you here :D (Q4g) range that What are the different modes of operation of an induction machine and what is the the slip values can take for each operation mode. What is the speed of the motor when the slip is equal to -3%. Draw the torque-speed characteristic of the induction machine across the whole range (the x-axis can be either speed or slip)
A 4-pole, 50 Hz, 415 V, wound-rotor star-connected induction machine has a nameplate and a datasheet with the following parameters: R₁: 0.060, R₂: 0.08 X₁: 0.440 Χή: 0.47Ω Xm: 15.20, (Q4a) | What is the speed (in rpm and rad /sec) of the machine at a slip of 0.04 (4%)? (Q4b) Calculate the starting current of the machine using the simplified equivalent circuit (In the simplified equivalent circuit, you can assume that RT R₁ and XTh~ X₁) ≈ Using the Thevenin equivalent circuit, calculate at what speed this machine generate its (Q4c) maximum torque? (Q4d) What is the maximum torque that the machine can generate at rated voltage? (Q4e) What is the value of the resistance we can connect in the rotor of the machine to get the maximum torque at a slip of 0.55 (55%). (Q4f) What is the following part of the induction machine and what is its practical function? How is the rotor constructed in this machine? Figure 7. Reddit's r/whatisthisthing cannot help you here :D (Q4g) range that What are the different modes of operation of an induction machine and what is the the slip values can take for each operation mode. What is the speed of the motor when the slip is equal to -3%. Draw the torque-speed characteristic of the induction machine across the whole range (the x-axis can be either speed or slip)
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter35: Harmonics 916
Section: Chapter Questions
Problem 3RQ: Would a positive-rotating harmonic or a negative-rotating harmonic be more harmful to an induction...
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Transcribed Image Text:A 4-pole, 50 Hz, 415 V, wound-rotor star-connected induction machine has a nameplate and a datasheet with
the following parameters:
R₁: 0.060,
R₂: 0.08
X₁: 0.440
Χή: 0.47Ω
Xm: 15.20,
(Q4a) |
What is the speed (in rpm and rad /sec) of the machine at a slip of 0.04 (4%)?
(Q4b)
Calculate the starting current of the machine using the simplified equivalent circuit (In the
simplified equivalent circuit, you can assume that RT R₁ and XTh~ X₁)
≈
Using the Thevenin equivalent circuit, calculate at what speed this machine generate its
(Q4c)
maximum torque?
(Q4d)
What is the maximum torque that the machine can generate at rated voltage?
(Q4e)
What is the value of the resistance we can connect in the rotor of the machine to get the
maximum torque at a slip of 0.55 (55%).
(Q4f)
What is the following part of the induction machine and what is its practical function? How is
the rotor constructed in this machine?
Figure 7. Reddit's r/whatisthisthing cannot help you here :D
(Q4g)
range that
What are the different modes of operation of an induction machine and what is the
the slip values can take for each operation mode. What is the speed of the motor when the slip is equal to -3%.
Draw the torque-speed characteristic of the induction machine across the whole range (the x-axis can be either
speed or slip)
Expert Solution
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Step 1: Summarize the given data.
VIEWStep 2: Determine speed at a slip of 0.04.
VIEWStep 3: Determine starting current.
VIEWStep 4: Determine speed when torque is maximum.
VIEWStep 5: Determine maximum torque generated.
VIEWStep 6: Explain working of rotor construction depicted in figure.
VIEWStep 7: Determine external rotor resistance.
VIEWStep 8: Discuss operating modes of an induction machine.
VIEWStep 9: Determine operating mode and speed at a slip of -3%.
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