Power systems
Read transmission problems as system flow
Follow energy from source to load to organise voltage, loss and fault calculations.
Start from the one-line diagram
Mark sources, transformers, lines, breakers, loads, base voltage and power direction.
Separate per-unit and actual values
Fix base power and voltage before conversion.
100 items · 150 minWritten response · 150 min40 floor + 60 avg
State the fault assumption
The network and sequence model depend on whether the fault is three-phase, line-to-ground or another type.
Connect economy and stability
Power factor, voltage drop, loss and compensation questions test the reason for an action as well as arithmetic.