Practice portal › Alternating Current › AC Generator and Transformer
Asked in GUJCET 2016 · Transformers
Idea: a step-down transformer has Nₛ<Nₚ, so (Vₛ)/(Vₚ)=(Nₛ)/(Nₚ)<1: the output voltage is less than the input voltage.
The two coils therefore do not have equal numbers of turns.
Power: a real transformer loses some energy, through I²R heating of the windings, eddy currents and hysteresis in the core, and flux leakage.
So the output power is less than the input power; only an idealised, loss-free transformer would make them equal.
So the correct statement is: output power < input power.
Reading this solution needs no sign-in. You only sign in to practise against the clock and keep your progress.
Practise this with a timer