This question was previously asked in

PGCIL DT Electrical 13 Aug 2021 Official Paper (NR I)

- 8.88 V
- 5.5 V
- 6 V
- 11.2 V

Option 1 : 8.88 V

__Concept:__

Induced emf of the transformer can be determined as

E = 4.44 ϕ f N

Where,

E = RMS value of induced emf

ϕ = Flux

N = Number of turns

f = Supply frequency

__Calculation:__

Flux = ϕ = 0.04 wb

f = 50 Hz

Induced EMF ⇒ E = 4.44 ϕ f N

Induced EMF per turn ⇒ \(\frac{E}{N}=4.44\;\times\phi\;\times f=4.44\times 0.04 \times 50=8.88\;V\)

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