Question 48

A 4 - pole, 1500 r.p.m. alternator kill generate e.m.f. at :

Solution

Share

N = $$\frac{120f}{p}$$

where 

N = r.p.m

f = emf induced

p = number of poles

1500 = $$\frac{120f}{4}$$

f = 50 Hz

So, the answer would be option d)50 Hz

Create a FREE account and get:

  • Download RRB Study Material PDF
  • 45+ RRB previous papers with solutions PDF
  • 300+ Online RRB Tests for Free