Question

A wound rotor has a synchronous speed of 1200 RPM. The rotor is rotating at a speed of 1075 RPM. What is the percent of rotor slip and what is the frequency of the induced rotor voltage

Answer 1

Answer:

rotor slip = 10.42 %

Frequency =  6.24hz

Explanation:

given data

synchronous speed = 1200 RPM

rotor rotating speed = 1075 RPM

solution

first we get here rotor slip that is

rotor slip = ( synchronous speed - rotor rotating speed  ) ÷ synchronous speed   .............................1

rotor slip = $\frac{1200 -1075}{1200}$

rotor slip = 0.10416  

rotor slip = 10.42 %

and

frequency of the induced rotor voltage is

Frequency = rotor slip × 60

Frequency = 10.42 %   × 60

Frequency =  6.24hz