4.7.3.4 Transformers (HT only)

Spec reference: 4.7.3.4 (physics only) (HT only).

Triple-only content in this dot

• Apply transformer ratio/current-power calculations in National Grid contexts.
• Explain why high potential difference reduces transmission losses.

Exam quick-check

• Can I identify this as a triple-only point from wording in the question?
• Can I apply the correct equation/idea with units and a clear conclusion?