4. A 208-V, 10-hp, four-pole, 60-Hz, V-connected induction motor has a full-load slip of 5 percent. a) What is the synchronous speed of this motor? b) What is the rotor speed of this motor at the rated load? c) What is the rotor frequency of this motor at the rated load?

4. A 208-V, 10-hp, four-pole, 60-Hz, V-connected induction motor has a full-load slip of 5 percent. a) What is the synchronous speed of this motor? b) What is the rotor speed of this motor at the rated load? c) What is the rotor frequency of this motor at the rated load?

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 19RQ: Why is the starting torque per A of starting current of a wound-rotor motor higher than that of a...

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Concept explainers

Single Phase Induction Motor

The single-phase induction motor or engine consists of a single rotating phase in the stator and a rotating cage in the rotor. When phase one supply is connected to the stator winding, a magnetic field is generated. In the pulsating field, the rotor does not rotate due to inertia. So, a single-phase import motor does not start and requires some initial methods.

Question

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4. A 208-V, 10-hp, four-pole, 60-Hz, V-connected induction motor has a full-load slip of 5 percent.
a) What is the synchronous speed of this motor?
b) What is the rotor speed of this motor at the rated load?
c) What is the rotor frequency of this motor at the rated load?

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