This question was asked inGPSC AE (Electrical) Class-2 R&B Department Paper 2025 – Series MQuestion 62 of 179 published · Gujarat Public Service CommissionOpen paper
Q171ModerateAC Voltage Controllers

In a N-stage sequence controller, each secondary is rated for __________

Answer & step-by-step solution
Correct answer: C. Vs/n
Quick explanation

In an N-stage sequence controller, the supply voltage is divided across the staged secondary arrangement; each secondary is designed for a fraction of the total controlled voltage. The keyed relation is Vs/n per stage.

Voltage per equal stage = Vs / n

Concept & Reasoning

Sequence controllers use staged transformer secondaries/switching so that voltage can be built up in discrete steps. If Vs represents the total secondary voltage available over n equal stages, an equal-voltage stage carries Vs/n. This keeps each controlled section at a manageable voltage rating.

How to Solve It in the Exam

Equal n stages → divide total stage voltage by n.

Important Exam Point

Define whether Vs means total or per-secondary voltage before applying the formula.

Quick Trick

Equal n stages → divide total stage voltage by n.

Common Mistake

Multiplying by n when the total voltage is being shared among n equal stages.

Solution diagram – In a N-stage sequence controller, each secondary is rated for __________
Exam tipDefine whether Vs means total or per-secondary voltage before applying the formula.
Verified · SRO editorial desk Report
Try it before reading the solution — tap an option.0/1✓ 0✗ 0

More AC Voltage Controllers questions