A fixed stage switchboard shall contain ____ devices for all branch circuits supplied by that switchboard.

A. current distribution
B. overcurrent protective
C. current load monitoring
D. light dimming


Answer: B

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The grease that is MOST-Likely used to lubricate speedometer cables, emergency brake cables, splines, and leaf springs is:

A. lithium-based lubricant B. chassis lubricant C. wheel-bearing lubricant D. solid lubricant

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Profile callouts are commonly used on ____.

A. arcs B. irregular shaped features C. plane surfaces D. all of the above E. none of the above

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If the period of a square wave is 22 ms, what is its frequency?

A) 22 kHz B) 45.5 kHz C) 45.5 Hz D) 22 Hz

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Duct tape is used to seal joints in duct insulation. A roll of duct tape contains 280 inches of tape. A 10-inch round duct with a 1-inch layer of insulation on it will need a piece of tape 37 3/4 inches long to cover the seam and overlap itself.  How many seams will one roll of duct tape cover?

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

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