What is the smallest listed diameter for suspension porcelain insulator disks?

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Multiple Choice

What is the smallest listed diameter for suspension porcelain insulator disks?

Explanation:
Diameters of suspension porcelain insulator disks come in standard sizes, measured across the disk face. The smaller the diameter, the smaller the disk. Among the given options, 3 3/8 inches is the smallest size, while 4, 5, and 6 inches are progressively larger. So the smallest listed diameter is 3 3/8 inches. (3 3/8" is 3.375" in decimal.)

Diameters of suspension porcelain insulator disks come in standard sizes, measured across the disk face. The smaller the diameter, the smaller the disk. Among the given options, 3 3/8 inches is the smallest size, while 4, 5, and 6 inches are progressively larger. So the smallest listed diameter is 3 3/8 inches. (3 3/8" is 3.375" in decimal.)

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