A system of feeders and branch circuits supplying power for lighting, receptacles, and equipment essential for life safety that is automatically connected to alternate power sources by one or more transfer switches during interruption of the normal power source is called a ____.
A. vital systems backup
B. critical branch
C. life safety branch
D. safety backup
Answer: C
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To discourage unauthorized entry, handhole covers must be _____.
a. permanently sealed b. provided with a keyed access device or padlock c. heavier than 100 pounds or require tools to open d. equipped with an anti-tamper device such as an audible alarm
A D flip-flop is constructed by connecting an inverter between the Set and Clock terminals of a S-R flip-flop
Indicate whether the statement is true or false
Moisture in a liquid state must be ____ before it can be removed with a vacuum pump.
A. vaporized B. condensed C. cooled D. solidified
Baseline dimensioning is a common method of dimension machine parts, whereby each feature dimension originates from a common surface, axis, or center plane.
Answer the following statement true (T) or false (F)