A student owns a model electric railway, and this model railway makes use of a step-down transformer. The input voltage is 230 V, and the transformer has 1710 turns on the input coil and 90 turns on the output coil.
(a)[3]
Calculate the transformer output voltage.
(b)[2]
Step-up transformers and step-down transformers differ in how their coils are arranged. Describe how the coil arrangement differs between the two transformer types.
(c)[2]
Explain the benefit of sending electricity at high voltages instead of at low voltages.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The relevant relation is $ (Vp / Vs) = (Np / Ns) $.” …