Engine : Electricity - 310/1386
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| What is a common type of protective covering used on electrical conductors? |
| A) plain paper |
| B) silver sheathing |
| C) rubber or plastic |
| D) Babbitt sheathing |
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| This is a straightforward multiple-choice question, and the correct answer is clear. Rubber or plastic is the common protective covering used on electrical conductors because it provides good insulation and safety. The other options don’t fit modern electrical standards, so this question helps test basic knowledge of wiring materials. |