A four-pole, three-phase induction motor drives a turbine load. At a certain operating point the machine has 4 percent slip and 87 percent efficiency. The motor drives a turbine with torque–speed characteristic given by TL = 20 + 0.006ω2,where TL is the load torque at the shaft. Determine: (1) the torque at the motor-turbine shaft. (2) the total power delivered to the turbine. (3) the total power consumed by the motor.
A four-pole, three-phase induction motor drives a turbine load. At a certain operating point the machine has 4 percent slip and 87 percent efficiency. The motor drives a turbine with torque–speed characteristic given by TL = 20 + 0.006ω2,where TL is the load torque at the shaft. Determine: (1) the torque at the motor-turbine shaft. (2) the total power delivered to the turbine. (3) the total power consumed by the motor.
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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A four-pole, three-phase induction motor drives a turbine load. At a certain operating
point the machine has 4 percent slip and 87 percent efficiency. The motor drives a
turbine with torque–speed characteristic given by TL = 20 + 0.006ω2,where TL is the
load torque at the shaft. Determine:
(1) the torque at the motor-turbine shaft.
(2) the total power delivered to the turbine.
(3) the total power consumed by the motor.
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