1.

Maximum voltage produced in an AC generator completing 60 cycles in 30 seconds is 250 V.a. What is the period of the armature? b. How many cycles are completed in T/2 seconds? c. What is the maximum emf produced when the armature completes 1800 rotation?

Answer»

a. Period = Time taken to complete one full rotation.

Period = \(\cfrac{Time\,taken\,for\,rotation}{Number\,of \,rotations}\) = \(\cfrac{30}{60}\) = \(\cfrac{1}{2}\)

= 0.5 s

When the Armature ABCD rotates, change in the magnetic flux depends on its direction and intensity.

b. only of a rotation. 

T = 1/2, T/2, 1/4

c. 250V



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