Some control components, such as limit switches, photodetectors, or flow switches, may be located on the machine itself, while other components such as control relays and motor starters may be located inside a cabinet.

Answer the following statement true (T) or false (F)


True

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When troubleshooting a potential relay, the terminals 5, 2, and 1 refer to:

a. 5 and 2 are the coil, 1 and 2 are the relay contacts. b. 1 and 2 are the coil, 5 and 2 are the relay contacts. c. 1 and 5 are the coil, 1 and 2 are the relay contacts.

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A 187-pound worker carelessly decides to jump down onto a lower scaffold level 2' below the level at which he is now working. How many pounds of force in foot-pounds does he exert on the scaffolding plank?

What will be an ideal response?

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Which of the following is a general NECĀ® requirement for installing boxes?

A) The box must be at least 2? deep. B) The box must be installed flush to the wall surface. C) The box must be of a sufficient size to permit locknuts to be properly installed. D) The finished installation must be accessible for future repair or maintenance.

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What is correct procedure when cutting a ventilation opening in a roof?

a. use preexisting openings only when there is no alternative b. rock the saw over, rather than through, structural supports c. several small holes distributed over the fire are better than one large hole d. return the saw to idle before withdrawing it from a cut

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