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Asked in GSEB Board March 2022 · Transformers
A transformer only transfers energy from the primary circuit to the secondary circuit.
In an ideal transformer nothing is lost, so Pₒ=Pᵢ.
A real transformer loses energy as heat in the windings (I²R), as eddy currents and hysteresis in the core, and through flux leakage.
Stepping up raises the voltage but lowers the current, so it does not change this.
So for a real transformer Pₒ<Pᵢ.
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