The slip of an induction motor when the rotor turns at synchronous speed is:
- 0
- 0.25
- 0.5
- 1
Correct answer: 1. 0
Explanation:
The formula for slip of induction motor is:
![](https://i0.wp.com/www.electricalengineering.xyz/wp-content/uploads/2023/01/sf-1.png?resize=578%2C222&ssl=1)
When the rotor turns at sync speed
ηsync = ηm
& Slip = (ηsync = ηm )/ηsync = 0
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