Each disk of a porcelain or glass suspension insulator is rated at ?

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Multiple Choice

Each disk of a porcelain or glass suspension insulator is rated at ?

Explanation:
Each disk in a porcelain or glass suspension insulator is designed to withstand about eleven kilovolts. This per-disk rating is a standard that sets how many discs are needed in a string to handle a given line voltage, since the total insulation increases with more disks in series. For example, two disks roughly equal 22 kV, three around 33 kV, and so on, providing a practical way to match insulator strings to system voltage while leaving margin for humidity, pollution, and aging. The other options aren’t aligned with the typical per-disc rating used in standard practice.

Each disk in a porcelain or glass suspension insulator is designed to withstand about eleven kilovolts. This per-disk rating is a standard that sets how many discs are needed in a string to handle a given line voltage, since the total insulation increases with more disks in series. For example, two disks roughly equal 22 kV, three around 33 kV, and so on, providing a practical way to match insulator strings to system voltage while leaving margin for humidity, pollution, and aging. The other options aren’t aligned with the typical per-disc rating used in standard practice.

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