ETO ETO Exam papers 📅 Dec 2023

Exam Question

With reference to a squirrel cage, induction, electric motors:

(a) Describe the construction of such a motor (6)

(b) Sketch the torque against speed curve of such a motor (5)

(c) Describe a method employed by a retrofitted device used to improve the part load performance of an induction motor (5)

Reference Answer

(a) Construction of a Squirrel Cage Induction Motor
A squirrel cage induction motor is a robust and reliable AC motor in which the rotor resembles a squirrel cage , giving the motor its name.
Main Components
1. Stator (Stationary Part)

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