AC MACHINES-1 (66761) Theory

The multiplication of 100 and speed difference divided by the synchronous speed is known as slip of an induction motor. It's always represented in percentage, generally it ranges from 0.4% to 6% based on its design factors.

Formula for AC Induction Motor Slip

The below mathematical formula is used in this calculator to determine the slip of an induction motor

Solved Example

The below step by step solved example problem may helpful for users to understand how the input values are being used in slip percentage calculations.
Example Problem
Find the slip of an induction motor, whose actual speed n = 1450 rpm & synchronous speed n_s = 1500 rpm.
Solution
The given data
n = 1450 rpm
n_s = 1500 rpm

Step by step calculation
Formula to find speed difference = n_s - n
Formula to find slip = (n_s - n) x 100/n_s
substitute the values in the above formulas
speed difference = 1500 - 1450
= 50

slip = 50/1500 x 100
slip = 3.33%