engineering recuitment SAIL OCTT Mock Test 2024 Electrical Machines Alternator and Synchronous Motors
Let α be the chording angle in electrical degrees for the fundamental flux wave of an alternator. Its pitch-factor for the nth harmonic will be equal to:
1
cos (2α/n)
2
cos α
3
cos (nα)
4
cos (3α)
5
cos (nα/2)