A single-phase 111-V, 50-Hz supply is connected to a coil with 200 turns of a coil-core assembly as shown in the given figure. Find the magnitude of maximum flux in the core.
A single-phase 111-V, 50-Hz supply is connected to a coil with 200 turns of a coil-core assembly as shown in the given figure. Find the magnitude of maximum flux in the core.
Right Answer is:
2.5 mWb
SOLUTION
The magnitude of net emf of an ideal transformer is given by
E = 4.44 × f × N × ϕm
Where
E = RMS value of applied voltage.
f = frequency of the transformer.
N = number of turns.
ϕm = the magnitude of maximum flux in the core.
GIVEN
E = 111 V, f = 50 Hz, N = 200
111 = 4.44 × 50 × 200 × ϕm
ϕm = 111 / (4.44 × 50 × 200)
ϕm = 2.5 mWb