When a relay is de-energized, ____.
A. the contacts remain closed
B. the contacts are mechanically held
C. spring tension causes the contacts to open
D. cooling is required before the relay can be re-energized
Answer: C
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____ are temporary watertight enclosures used either in water-bearing soil or directly in water.
A. Cofferdams B. Slurries C. Caissons D. Sheet pilings
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Where would information be found on whether a bid bond was required and, if so, its amount?
What will be an ideal response?
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How many volts can a 1kVA buck-and-boost transformer actually carry in the secondary winding?
a. 1kVA b. 2.4kVA c. 11kVA d. 24kVA
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The ground around the house should slope away from the home at a minimum ____% grade (6" in 10') for at least the first 5'.
A. 3 B. 5 C. 7 D. 10
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