Midterm 1

Question 1

AWG

Answer 1

American wire gauge

Question 2

DMM

Answer 2

Digital multimeter

Question 3

NEC

Answer 3

National electric code

Question 4

IEC

Answer 4

International electrotechnical commission

Question 5

NEMA

Answer 5

National electrical manufacturers association

Question 6

Rating for meters to be used in an industrial setting

Answer 6

Cat 3

Question 7

Diode

Answer 7

Allows current to flow in one direction only

Question 8

Red load center

Answer 8

480 VAC

Question 9

AC

Answer 9

Alternating current

Question 10

DC

Answer 10

Direct current

Question 11

How to tape switches or receptacle

Answer 11

Backtape/backwrap

Question 12

Flux

Answer 12

Combined lines of force

Question 13

Resistance and current are?

Answer 13

Proportional

Question 14

Bonding

Answer 14

Landing neutrals and grounds together

Question 15

Thermals protect

Answer 15

Excess heat in a circuit

Question 16

What amp breaker for a 10 receptacle circuit

Answer 16

20 amp

Question 17

Ghost voltage

Answer 17

Voltage in the air from magnetism

Question 18

ESD

Answer 18

Electrostatic discharge

Question 19

Difference to trip gfci

Answer 19

3-5 milli amps (mA)

Question 20

3 ways to increase magnetism

Answer 20

Add iron core, increase voltage, and more windings around the coil.

Question 21

Main crane disconnect

Answer 21

Black and yellow box, 250 DC

Question 22

Losing a phase of 3 phase creates

Answer 22

Single phase

Question 23

Single phase step down transformer works by

Answer 23

Takes a higher voltage and turns it into 120V. Voltage goes through the primary winding with more wire to the secondary winding with less wire causeing it to drop.

Question 24

Electromagnetism

Answer 24

The magnetism produced when electric current passes through a conductor

Question 25

Fuses are used to protect from?

Answer 25

overcurrent

Question 26

Seal in tips

Answer 26

Aux tips in parallel with the start/stop button to keep load energized

Question 27

Start and stop buttons

Answer 27

Starts wired in parallel and stops in series

Question 28

5 basic types of circuits

Answer 28

Open, close, short, series, and parallel

Question 29

3 rules how a circuit works

Answer 29

1. Electricity wants to go from high V to lower 2. Electricity always has work to be done 3. Electricity always needs a path

Question 30

4 things that make up a circuit

Answer 30

Load, wire, source voltage, and switch

Question 31

SPD

Answer 31

Surge protection device