Deck 20: Summary

Question 1

EMT refers to Electromotive Torque.

Answer 1

False

Question 2

Because ____________________ cable is relatively inexpensive, lightweight, and easy to install, it is widely used for residential installations.

Answer 2

nonmetallic-sheathed
nonmetallic sheathed

Question 3

Explain how to connect the traveler wires to a four-way switch in a typical circuit where a lamp is controlled from any one of three switching points.

Answer 3

Care must be used in connecting the traveler wires to the proper terminals of the four-way switch. Always make sure that the two traveler wires from one three-way switch are connected to the two terminals on one side of the four-way switch while the two traveler wires from the other three-way switch connect to the two terminals on the other side of the four-way switch.

Question 4

Since thinwall metallic tubing is not threaded, ____________________ are used for joining lengths together.

Question 5

A bell circuit consists of a(n) ____________________, bell or buzzer, and one or more pushbuttons.

Question 6

Because it lays flat under carpeting, flat conductor cable is ideally suited for use in residential and school buildings.

Question 7

____________________ is a wiring system that may be used under carpet squares on solid, smooth, and continuous floor surfaces.

Question 8

The three-way switch is used to control a light from two different locations.

Question 9

Explain the role of a rectifier in a remote control lighting system.

Question 10

Remote control systems consist of low-voltage relays that operate 220-volt contacts from low-voltage controlling switches.