On uncovered building floors, the top rail of a guardrail must be strong enough to support a weight of at least _____.

a. 150 pounds
b. 175 pounds
c. 200 pounds
d. 250 pounds


d. 250 pounds

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____ is generally used to examine the fiber optic connection for possible problems.

A. A magnifying glass B. A telescope C. The naked eye D. A microscope

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According to NEMA definitions, which of the following is a type of totally enclosed motor?

a. Drip-proof b. Guarded c. Sealed windings d. Water-cooled

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Dividing the total computed load in volt-amperes by the residential service voltage of ____________________ volts will give the minimum ampacity that the service conductors must be rated for.

Fill in the blank(s) with the appropriate word(s).

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Transformers are rated using ____.

A. volt-amperes B. volt-ohms C. amperes-ohms D. volt-resistance

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