This document provides information about a subject code and unit taught by two lecturers, Mrs. A. Sangari and Mrs. P. T. Subasini, in the Electrical and Electronics Engineering department. The subject and unit are about induction motors and specifically discusses the concept of slip in induction motors.

1. INDUCTION MOTORS
Name : Mrs.A.Sangari & Mrs.P.T.Subasini
Designation : Sr. Lecturer & Lecturer
Department : Electrical and Electronics Engineering
Subject code : 131307
Year : II/ECE A & B
Unit : IV
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22. induces a large voltage – hence
large currents flow within the
rotor,
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23. producing a strong torque.
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24. Induction Motors: Slip
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25. The difference between the
synchronous speed and rotor
speed can be
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26. expressed as a percentage of
synchronous speed, known as
the slip.
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27. N Ns - s =
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28. Ns
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29. s = slip, Ns = synchronous
speed (rpm), N = rotor speed
(rpm)
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30. • At no-load, the slip is nearly
zero (<0.1%).
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