Where a main bonding jumper is required by the NEC®, the jumper cannot be less than what percentage of the area of the largest phase conductor?

a. 12.5%
b. 14%
c. 17.5%
d. 20%


a. 12.5%

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In addition to removing moisture from compressed air, refrigeration air dryers are also effective at removing _____.

a. negative ions b. compressor lubrication oil c. fine particles d. organic matter

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A tune up usually includes a carburetor overhaul.

Answer the following statement true (T) or false (F)

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The ____ view is used to show detail within a part that would be obscured by the part's surface. Often a freehand break line is used to outline the area that has been imaginarily removed to reveal the inner workings.

A. section B. cut-a-way C. detail D. rotated

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Propane is:

A) Lighter than air. B) About the same density as air. C) Either lighter or heavier than air depending on the characteristics of the local gas. D) Heavier than air.

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