2.496 HZ is the resistance change the resonant frequency.
Given, Supply frequency, f = 60 12
number of poles, P = 4
Full load speed, Ne= 1725 rpm
Synchronous speed; No= 1201= 120X60 = 1800 rpm
P
4
We know the formula for Full load-speed
Ne = N's (1 - Sf)
where se = full load rotor ship
Ne = 1 - SP
SQ = 1- Ne = 1- 1725 = 0.0416 DY 4-16%
1800
SQ= 4. 16 % or 0.0416
Frequency of rotor, fy= Sgif = (0.0416) ( 60 ) = 2.496 Hz
fr = 2.496 HZ
Learn more about Frequency here: brainly.com/question/16148316
#SPJ4
