Describe a two-phase, four-wire system.
What will be an ideal response?
This system consists of two separate single-phase circuits. These circuits are isolated electrically from each other.
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As you are using a ladder, you find that it is defective. The first thing you should do is _____.
a. notify your supervisor and then remove the ladder from service b. remove it from service and clearly mark it with a Do Not Use tag c. put it aside and notify your supervisor at your first opportunity d. finish your job, but then mark the ladder with a Do Not Use tag
A ten-hour OSHA card _________________________.
A. expires after 1 year B. expires after 2 years C. expires after 3 years D. does not expire
Which type of lender often requires extra forms, drawings, and specifications that must be taken into account in the initial design stages?
A. credit union B. corporate bank C. private mortgage company D. Federal Housing Administration (FHA)
Common sources of ignition include electricity, sparking metal, heat-generating equipment, and failed _____.
a. electrical connections b. hydraulic connections c. pneumatic connections d. mechanical connections