study words

Question 1

Current that reverses polarity or direction with regular frequency. It can be single phase, two phase, three phase, or polyphase.

Answer 1

Alternating Current (AC)

Question 2

A tubing, piping, or electrical wire installation that permits flow from the energy source back to energy source.

Answer 2

Circuit

Question 3

A device that senses current flow and opens when its rated current flow is exceeded.

Answer 3

Circuit Breaker

Question 4

Local, state, and national rules and regulations.

Answer 4

Codes

Question 5

Material or substance that readily passes electricity.

Answer 5

Conductor

Question 6

The flow of electrons through a conductor.

Answer 6

Current

Question 7

Electric current that flows only in one direction.

Answer 7

Direct Current (DC)

Question 8

The presence and flow of an electric charge.

Answer 8

Electricity

Question 9

Electrical safety device consisting of a strip of fusible metal in a circuit that melts when the circuit is overloaded.

Answer 9

Fuse

Question 10

Breaker specifically designed to open the circuit in the event of a ground fault.

Answer 10

Ground Fault Circuit Interrupter (GFCI)

Question 11

A meter that reads multiple electrical properties, typically including volts and ohms.

Answer 11

Multimeter

Question 12

The opposition to current flow by a physical conductor.

Answer 12

Resistance

Question 13

A low resistance connection (usually accidental and undesirable) between two parts of an electrical circuit.

Answer 13

Short Circuit

Question 14

The potential difference between two points.

Answer 14

Voltage

Question 15

Nonmetallic-sheathed cable is widely used for branch circuits and feeders in residential and commercial systems. It is flame-retardant and moisture resistant but suitable for dry locations only.

Answer 15

Type NM

Question 16

Underground feeder cable is sunlight and moisture resistant, suitable for outside use, and can be buried under the ground.

Answer 16

Type UF

Question 17

Another common type of cable is thermoplastic high heat-resistant nylon-coated and is suitable for dry and damp locations.

Answer 17

Type THHN

Question 18

Using a wire that is too small can lead to

Answer 18

overheating and potentially fire.

Question 19

12-gauge wire is often recommended for

Answer 19

residential applications.

Question 20

The smaller the number (gauge), the larger the

Answer 20

diameter of the wire.

Question 21

Wires larger than 1 gauge are designated as

Answer 21

0, 00, 000, and 0000.

Question 22

how is electric current measured

Answer 22

amps

Question 23

how is electric potential measured

Answer 23

volts

Question 24

how is electric work measured

Answer 24

watts

Question 25

how is resistance measured

Answer 25

Ohms

Question 26

what is the masure of electrical charge

Answer 26

coulomb

Question 27

The ability to make current flow is called

Answer 27

electromotive force or potential