Answered: 4. A synchronous motor starts but fails…

Engineering

Electrical Engineering

4. A synchronous motor starts but fails to develop its full torque. What could it be due to?

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter33: Single-phase Motors

Section: Chapter Questions

Problem 16RQ: When a repulsion-start induction-run motor reaches about 75% of rated full-load speed, it stops...

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Concept explainers

Stator and Rotor Magnetic Field

The stator and rotor magnetic field is the resulting magnetic field generated by a system of coils that are symmetrically aligned. They are supplied with polyphase currents. The magnetic field is generated by poly-phase (two or more phases) current or single-phase current. In the latter case, two field stator windings are supplied and two resulting electromagnetic fields are generated beyond the stage.

Question

4. A synchronous motor starts but fails to develop its full torque. What could it be due to?

5. What is the relationship between speed and torque regulation in dc shunt motors?

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