SSE JE Electrical Engineering 28 Oct 2020 Shift 1 Papers

Question : 170 of 200

Marks: +1, -0

Calculate the frequency of rotor current if supply frequency is 50 Hz and slip is 5%.

Solution:

frequency (f) = 50 Hz
Slip (s) = 5 % = 0.05
Rotor current frequency

(\f_\r)

= (s)(f)
Rotor current frequency

(\f_\r)

= 0.05 × 50 = 2.5 Hz

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