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SarkariResultOutAdditional Assistant Engineer (Electrical) · 2026

Previous Year Question

In an electric arc, since the arc path is purely resistive, the arc voltage is:
  1. Out of phase with the arc current
  2. In phase with the arc current
  3. Lagging the arc current
  4. Leading the arc current

Correct answer: B

Explanation

For a purely resistive arc path, voltage and current have no reactive phase displacement. Therefore the arc voltage is in phase with the arc current.

Step-by-step solution

Arc Voltage-Current Phase Relation explanatory diagram

Correct Answer

B — In phase with the arc current

Explanation

For a purely resistive arc path, voltage and current have no reactive phase displacement. Therefore the arc voltage is in phase with the arc current.

Key Concept

Arc Voltage-Current Phase Relation

Exam Point

Pure resistance → V and I in phase.

Exam tip

Pure resistance → V and I in phase.

Quick method

Pure resistance → V and I in phase.