HV Exit Exam • Set 4 Question 24 of 30

For standard high-voltage laboratory calibration and voltage measurements, which spark gap configuration provides the highest measurement accuracy?

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Direct Answer

Option A: Sphere gaps

Sphere gaps provide a nearly uniform electrostatic field (when gap spacing is less than sphere diameter), giving highly reproducible and standardized breakdown voltages per IEC 60052.

All Options

Sphere gaps (Correct Answer)

Rod gaps

Point-to-plane gaps

Needle gaps

Detailed Explanation & Context

Sphere gaps provide a nearly uniform electrostatic field (when gap spacing is less than sphere diameter), giving highly reproducible and standardized breakdown voltages per IEC 60052.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).

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