Quiz questions

Question 1

What does D.C stand for?

Answer 1

direct current

Question 2

what does A.C stand for?

Answer 2

alternating current

Question 3

How many different versions of a.c are there?

Answer 3

single phase and polyphase

Question 4

D.C has what type of polarities?

Answer 4

positive and negative

Question 5

what colour is positive terminals?

Answer 5

red

Question 6

colour of negative terminals?

Answer 6

black

Question 7

3 major states of matter?

Answer 7

solid liquid gas

Question 8

what is an element?

Answer 8

A single uncombined substance consisting of one type of atom

Question 9

What is a compound?

Answer 9

type of atom that contains two or more elements with atoms of more than one type

Question 10

Amount of electrons in the outter valence?

Answer 10

8

Question 11

Atoms with 1-3 valence electrons?

Answer 11

Conductors

Question 12

Atoms with 5-8 valence electrons?

Answer 12

Insulators

Question 13

Atoms with 4 valence electrons are called what?

Answer 13

Semi-conductors

Question 14

Smallest unit which an element can be broken down?

Answer 14

atom

Question 15

What is the smallest unit which a substance can be broken down?

Answer 15

molecule

Question 16

3 ways in which a body may receive a charge?

Answer 16

conduction, induction, and friction

Question 17

Negatively charged atom?

Answer 17

Ion

Question 18

A positive charged atom?

Answer 18

cation

Question 19

how is piezoelectricity produced?

Answer 19

applying pressure

Question 20

how is photovoltaic electricity produced?

Answer 20

by light

Question 21

How is triboelectricity produced?

Answer 21

by friction

Question 22

how is electrochemical electricity produced?

Answer 22

by chemical means

Question 23

How is thermoelectrical electricity produced?

Answer 23

produced by heat

Question 24

How is magnetoelectrical electricity produced?

Answer 24

produced by magnetism

Question 25

What direction do electrons flow?

Answer 25

negative to positive

Question 26

How far must you stay away from fallen power lines?

Answer 26

10 metres

Question 27

how far must you be away from energized lines when operating equipment?

Answer 27

3-7metres

Question 28

What does potential difference mean?

Answer 28

voltage difference

Question 29

Which diagram shows the highest outage at the top and lower voltage at the bottom?

Answer 29

One line diagram

Question 30

Which diagram is the best for the do-it-yourself hobbyist?

Answer 30

a wiring diagram

Question 31

Which diagram is like circuit maps?

Answer 31

Schematic diagram

Question 32

What does a multimeter measure?

Answer 32

AC DC voltage AC DC amps resistance

Question 33

What are field forces?

Answer 33

Forces between electric charges

Question 34

How many ways may a body receive a charge and what are they?

Answer 34

Three. | Friction, Conduction, Induction

Question 35

Electricity from friction?

Answer 35

When two dissimilar substances are brought close to each other or rubbed together, also known as the triboelectric effect

Question 36

Conduction?

Answer 36

When a body comes into contact with an uncharged body

Question 37

Induction?

Answer 37

Principal of inducting a current flow in a wire when it is moved within a magnetic field

Question 38

The six major categories that can be converted into energy?

Answer 38

``` Heat Light Friction Chemical Magnetism Mechanical pressure ```

Question 39

electricity from heat?

Answer 39

the thermoelectric effect, when 2 dissimilar metals are heated , greater the heat the greater the emf

Question 40

electricity from light?

Answer 40

light energy is transmitted by small particles known as photons

Question 41

Electricity from magnetism?

Answer 41

The principle of inducting the current flow in a wire when it is moved within a magnetic field

Question 42

electricity from chemical energy?

Answer 42

two dissimilar electrodes are inserted into a electrolyte with interacts with the metals, causing electrons to transfer

Question 43

Electricity from Mechanical Pressure?

Answer 43

Interacting of electrostatic and mechanical stresses within certain crystals

Question 44

What is the difference between electrical power and energy?

Answer 44

Energy is the ability to do or store work and power is the rate of doing work

Question 45

Ohms law states that current is directly proportional to the _____, and inversely proportional to the _________?

Answer 45

voltage and resistance

Question 46

formula for coulomb’s law of electrostatic charges?

Answer 46

F = K x Q1 x Q2 / D2

Question 47

What is a coulomb?

Answer 47

it is equal to the quantity of electricity conveyed in one second by a current of one ampere

Question 48

One ampere is equal to what?

Answer 48

6.24 x 10 18 power , electrons per second and is also equal to one coulomb per second

Question 49

What are the 4 factors used to determine the resistance of a piece of wire?

Answer 49

- M material it’s made of - A cross sectional area - L conductor length - T it’s temperature

Question 50

“ohms per mil-ft” of copper and aluminum?

Answer 50

copper is 10.4 | aluminum is 17

Question 51

When an atom losses an electron , the atom becomes?

Answer 51

positive