SSE JE Electrical Engineering 29 Oct 2020 Shift 2 Papers

Question : 153 of 200

Marks: +1, -0

What is the frequency of the generated EMF in a six-pole alternator running at 1200 rpm?

Solution:

Given that, number of poles (P) = 6
Synchronous speed

(\N_\s)

= 1200 rpm
Frequency

\f ={\PN_\s}/120={6 ×1200}/{120}=60 \Hz

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