a- Explain the difference in the Torque-Speed Characteristics of DC Shunt andseries Motors.b- A 120 V shunt motor has the following parameters: Ra = 0.4 Q, RF = 120 Q.On full load, the line current is 19.5 A and the motor runs at 1200 rpm, findthe output torque.

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a- Explain the difference in the Torque-Speed Characteristics of DC Shunt and series Motors.

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

a- Explain the difference in the Torque-Speed Characteristics of DC Shunt and
series Motors.
b- A 120 V shunt motor has the following parameters: Ra = 0.4 Q, RF = 120 Q.
On full load, the line current is 19.5 A and the motor runs at 1200 rpm, find
the output torque.

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