Deck 17: General Wiring Practices Part 2: Protection Circuits, Dimmers, and Chimes

Question 1

Ground faults ____.

A) are unrelated to insulation problems
B) can be caused by many different conditions
C) are usually intentional
D) are not hazardous

Answer 1

B

Question 2

Chime circuits are operated on voltages that generally range from ____ volts AC.

A) 4- to 8-
B) 8- to 16-
C) 16- to 24-
D) 24- to 32-

Answer 2

C

Question 3

Ground fault receptacles contain ____.

A) a relay coil
B) a spherical transformer
C) a manual sensing circuit
D) different circuitry than the circuit breaker

Answer 3

A

Question 4

There are two basic types of arc-faults, the ____ and the ____.

A) low temperature; high temperature
B) line; load
C) parallel; series
D) AC; DC

Question 5

Single-pole dimmers generally have one ____ and two black pig-tail leads.

A) white
B) cream
C) green
D) gray

Question 6

The AFCI contains a ____ that is connected to the neutral bus bar in the panel box.

A) gold screw
B) white pig tail
C) silver screw
D) brass screw

Question 7

There are three basic types of ground fault circuit interrupters.

Question 8

When connecting GFCI receptacles, the incoming power must be connected to the ____ side of the receptacle.

A) BRANCH
B) PHASE
C) LINE
D) LOAD

Question 9

Single-pole GFCI circuit breakers contain ____ connection screw(s).

A) one
B) two
C) three
D) four

Question 10

With ground fault circuit interrupters, sensing the amount of current flow in each conductor is not required.

Question 11

Chime circuits are generally made using ____ AWG two-conductor bell wire.

A) 12-
B) 14-
C) 16-
D) 18-

Question 12

____-fault circuit interrupters (AFCIs) are similar to ground fault circuit interrupters.

A) Alternating
B) Accidental
C) Attenuated
D) Arc

Question 13

Thyristors are solid-state devices that exhibit ____ state(s) of operation.

A) one
B) two
C) four
D) eight

Question 14

Light dimmers operate by chopping the AC waveform applied to the lamp.

Question 15

When a large home requires more than one chime, additional chimes are connected in series with the master chime.

Question 16

Ground fault circuit interrupters for personnel protection will open the circuit with a ground fault of approximately ____ mA.

A) 0.5
B) 1
C) 5
D) 10

Question 17

The AFCI is intended to protect against ____.

A) overload
B) short circuits
C) fire
D) electrocution

Question 18

The triac is a member of the ____ family of devices.

A) resistor
B) capacitor
C) transistor
D) thyristor

Question 19

There are conditions where arcing in an electrical circuit is normal, such as ____.

A) arcs caused by brushless motors
B) turning a light switch on or off
C) changing a light bulb without the power turned on
D) plugging in an appliance that is off

Question 20

When the current of an arc remains below the normal range of a common thermo/magnetic circuit breaker, it can still provide protection.