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
You might also like to view...
Because it is possible for investigators to confuse the suspect and destination disks when performing imaging, and to preclude any grounds for challenging the image output, it is common practice to protect the suspect media using a ____.
A. bridge B. Faraday Cage C. write blocker D. rubber boot
Based on the measurements shown in the figure above, what is the sling factor that should be applied to the weight of the lifted load on each sling?
a. 0.891 b. 1.065 c. 1.185 d. 1.260
Which of the following commercial loads can be fed from a regular circuit rather than an emergency circuit?
a. Exit lights b. Life safety systems c. Fire alarm systems d. Computer equipment
?The operating voltage required for air carbon arc welding is ___________.
A. ?35 volts or higher B. ?18 volts or higher C. ?120 volts or 240 volts D. ?24 volts or lower