ITEC 220 Test #1 Flashcards Preview

Module 4, Lesson 3 > ITEC 220 Test #1 > Flashcards

Flashcards in ITEC 220 Test #1 Deck (69)
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1

Short circuit

An unintended path for current to flow which bypasses the intended devices

2

A three-wire line cord has one connector tied to chassis ground

True

3

Fuse

A protection device which overcurrent produces heat to melt a fusible element

4

Circuit breaker

A circuit interruption device that activates when an overcurrent is applied

5

Thermal overload

A protection device that opens when the ambient temperature rises above the rated value

6

Electromechanical relay

A switch that is activated by electromagnetism

7

If a fuse blows, replace it with a higher valued one

False

8

A fuse is what type of indicator

Circuit overload

9

An interlock or third-wire ground plug is an example of

Prevention protection

10

Schematic symbol

Drawings that represent components

11

Transducer

A device that changes one from of energy into another form

12

Atom

The smallest particle of an element

13

Proton

A heavy positive particle in the nucleus of an atom

14

Electron

A light negative particle orbiting the nucleus of an atom

15

Nucleus

The center of an atom. It consists of protons and neutrons

16

Neutron

A heavy particle, having no charge, found in the nucleus of an atom

17

Charge

The attraction and repulsion between particles

18

Element

A material that cannot be broken down by chemical reaction

19

Molecule

The smallest unit of a compound that has the same characteristics as the compound

20

Compound

A material whose molecules are the same

21

Shells/rings

The layers in which the electrons are found

22

The smallest particles into which an atom can be divided are called

Protons and electrons

23

An electron has a negative charge

True

24

Unlike charges repel each other

False

25

What is formed when two or more atoms of different elements are combined

A molecule

26

Valence electrons

The outermost electrons of an atom

27

Free electrons

Valence electrons that can move easily from atom to atom

28

Insulators

Compounds in which the bonding of the atoms prevent the valence electrons from becoming free electrons

29

Dielectrics

Insulators that help electrodes store charge

30

Conductor

Material whose atoms on the outer ring are less than half complete