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
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
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
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).