Quiz # 5

the long slot on a 15-ampere, 125-volt, receptacle is the _____________ conductor.

grounded

What type of fixed resistor is made by winding a piece of resistive wire around a ceramic core?

wire-wound

What type resistors are generally used when a high power rating is needed?

wire-wound

A variable resistor with two terminals is called

rheostat

What type of fixed resistor is made by combining metal with glass and then applying it to a ceramic base as a thick film?

Metal glaze

A resistor whose values can be varied over a range of values is called a ______________ resistor.

Variable

What type of fixed resistor is made by applying a film of carbon to a ceramic rod?

carbon film

There are many more resistance values available for 10% tolerance resistors than for 1% tolerance resistors.

false

in electrical schematics, the symbol used to represent a resistor is standard.

false

What color used as the multiplier band means to divid the combined first two numbers by 10?

gold

The grounded (identified) conductor of 6 AWG or smaller must have an outer finish that is ____.

gray, white, or three continuous white stripes

When using individual conductors in raceway, which insulation color is NOT permitted for the grounded conductor (neutral)?

green with white stripes

specify the maximum overcorrect protection permitted for the following the circuit conductor sizes: a. 15 amperes b. 20 amperes c. 30 amperes 10 AWG copper 12 AWG copper 14 AWG copper

10 AWG copper (30 amperes) 12 AWG copper (20 amperes) 14 AWG copper (15 amperes)

What is another term for a variable resistor?

potentiometer

A 4-way switch does not have "ON" and "OFF" markings. Four-way switches are connected to the ____________________ between two 3-way switches. One 3-way switch is fed by the ____________________; the other 3-way switch is connected to the load.

travelers; source

The NEC requires that switching be done only in __________ conductors.

ungrounded

Match the following switch types with the correct number of terminals for each. a. Two terminals b. Four terminals c. Three terminals Three-way switch Single-pole switch Four-way switch

Three-way switch (c. Three terminals) Single-pole switch (a. Two terminals) Four-way switch (b. Four terminals)

What is indicated by the fourth color band on a resistor?

Tolerance

The value of a resistor can often be determined by the color code

True

snap switches with nonmetallic yokes (straps) have a terminal for the equipment grounding conductor. Using this type of switch provides a means for grounding ________________ faceplates when nonmetallic boxes are used.

metal

What type of fixed resistor is made by applying a film of metal to a ceramic rod in a vacuum?

metal film

the common point on a wye-connected polyphase system or the mid-point on a single phase system is the ______________.

neutral point

There is very little resistance and a large amount of current flows in a(n) ______________ circuit.

short

When terminating a receptacle, the white (grounded) conductor is always connected to the ____________________-colored terminal, and the phase (hot) conductor is always connected to the ____________________-colored terminal.

silver; brass

The conductors that run between a switched outlet and the switch controlling the outlet are called a(n) ____________________.

switch loop

What type of resistors can only have one ohmic value?

Fixed

Receptacles have several screw terminals for the attachment of circuit conductors. Match the following screws with their intended conductor. a. Equipment grounding conductor b. Hot (phase) conductor c. Grounded (white) conductor Green hexagonal screw Silver-colored screw Brass-colored screw

Green hexagonal screw (Equipment grounding conductor) Silver-colored screw (Grounded (white) conductor) Brass-colored screw (Hot (phase) conductor)

What type of resistor operates by moving a wiper arm with a screw of some number of turns?

Multiturn variable. Generally 3 to 10 turns

A variable resistor with three terminals is called a ________________.

Potentiometer

Resistors functioning as________________ are used in applications involving field effect transistors and multirange voltmeter circuits

Voltage divider's

To avoid inductive heating in metallic raceways, the NEC requires that ____.

all circuit conductors be run in the same raceway

Phase conductors 6 AWG and smaller ____ permitted to be re-identified as equipment ground conductors using green paint, tape, or other effective means.

are not

What type of fixed resistor is made from a compound of carbon graphite and resin bonding material?

composition carbon

On isolated ground receptacles, the metal yoke ____________ integrally bonded to the equipment grounding terminal of the receptacle.

is not

When receptacles or switches have No. 6-32 screws secured to them with small pieces of cardboard, these pieces of cardboard must be ____ when the wiring device is installed in a metal outlet box.

removed

All 125-volt, 15- and 20-ampere receptacles in a dwelling are required to be ____.

tamper resistant

how many color bands are used on resistors that have a tolerance of ±20?

three

the _________ of a resistor indicates the plus and minus limits of a resistor's ohmic value.

tolerance