A three-phase, 50-Hz, 6-pole induction motor develops a useful torque of 120 Nm at full-load, while the rotor frequency is 2 Hz. The torque lost due to friction and windage is 10 Nm. Calculate: 1.output power 2. rotational losses
A three-phase, 50-Hz, 6-pole induction motor develops a useful torque of 120 Nm at full-load, while the rotor frequency is 2 Hz. The torque lost due to friction and windage is 10 Nm. Calculate: 1.output power 2. rotational losses
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter32: Three-phase Motors
Section: Chapter Questions
Problem 6RQ: Name three factors that determine the torque produced by an induction motor.
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Question
A three-phase, 50-Hz, 6-pole induction motor develops a useful torque of 120 Nm at full-load, while the rotor
frequency is 2 Hz. The torque lost due to friction and windage is 10 Nm. Calculate:
1.output power
2. rotational losses
Expert Solution
Step 1
Given :
Pole = 6
Frequency =50 HZ
Useful Torque = 120 Nm
Rotor Frequency = 2 HZ
torque Lost = 10 Nm
SLip= Fr/ Fs
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