A 460 V, 25 hp, 60 Hz, four pole, Y-connected induction motor has the following impedances: R1 0.641 Q Ω = Χ1 = 1.106 Ω X2 = 0.464 Ω Mechanical loss is 100 W and core loss is 1 kW for a slip 2.2%, find: (a) The speed. (b) The stator current. (c) Power factor R2 = 0.332 Q Xm 26.3 2 Ω = (d) The developed and output power

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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3:
A 460 V, 25 hp, 60 Hz, four pole, Y-connected induction motor
has the following impedances:
R1 0.641 Q
X1 = 1.106 Ω
X2 = 0.464 Ω
Xm 26.3 Q
Mechanical loss is 100 W and core loss is 1 kW for a slip =
2.2%, find:
R2 0.332 Q
(a) The speed.
(b) The stator current.
(c) Power factor
(d) The developed and output power
Transcribed Image Text:3: A 460 V, 25 hp, 60 Hz, four pole, Y-connected induction motor has the following impedances: R1 0.641 Q X1 = 1.106 Ω X2 = 0.464 Ω Xm 26.3 Q Mechanical loss is 100 W and core loss is 1 kW for a slip = 2.2%, find: R2 0.332 Q (a) The speed. (b) The stator current. (c) Power factor (d) The developed and output power
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