Which of the following is NOT verified in the troubleshooting of switches?
A) The switching distance is correct. B) If the state of the contacts can be changed.
C) The resistance of closed contacts. D) The physical state of the contacts.
A
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A switch used to control one or more lamps from two different locations is called a(n) _____.
a. three-way switch b. four-way switch c. dimmer switch d. three-way relay
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The ____________________ is a device that will trip or open on an overload and must be manually reset.
Fill in the blank(s) with the appropriate word(s).
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The purpose of _________ is to assure site emergency preparedness and to foster community right-to-know.
Fill in the blank(s) with the appropriate word(s).
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In the zoned system, how many motorized valves does each circuit contain?
A) 1 B) 2 C) 3 D) 4
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