2018

Question 1

What instrument is used during safe isolation?

Answer 1

Voltage Tester

Question 2

Symbol for SI unit used for the measurement of work?

Answer 2

E (Energy). Work or Work Done

Question 3

What is Weight?

Answer 3

A Force

Question 4

Formula for Effort?

Answer 4

Load x Load to fulcrum distance/ effort to fulcrum distance

Question 5

Uses of gears?

Answer 5

Speed things up
Slow things down
To change direction
To control many things at once

Question 6

What pulley has the pulley fixed to a wall or ceiling?

Answer 6

Single fixed pulley

Question 7

3 modes of force?

Answer 7

Physical
Gravitational
Environmental

Question 8

A Mass of 1 Kg exerts a force of?

Answer 8

9.81 N

Question 9

Force x Distance =?

Answer 9

Work Done

Question 10

What are the 2 forms of energy?

Answer 10

Kinetic & Potential

Question 11

Stored Energy is?

Answer 11

Potential Energy

Question 12

Voltage is directly proportional to ?

Answer 12

Current

Question 13

Voltage is inversely proportional to ?

Answer 13

Resistance

Question 14

10 to the 6th is?

Answer 14

Mega

Question 15

10 to the -6 is?

Answer 15

Micro

Question 16

10 to the 9th is?

Answer 16

Giga

Question 17

10 to the -12 is?

Answer 17

Pico

Question 18

L.C.R. is?

Answer 18

Inductive Reactance
Copassative Reactance
Resistivity

Question 19

Efficiency formula?

Answer 19

Efficiency = Output Power / Input Power x 100

Question 20

Simplest atom?

Answer 20

Hydrogen . 1 proton and 1 electron

Question 21

Heaviest atom?

Answer 21

Uranium. 92 protons and 92 electrons

Question 22

Copper atom ?

Answer 22

29 protons and 29 electrons .

Question 23

Conventional flow is ?

Answer 23

Positive to Negative

Question 24

Electron Flow is?

Answer 24

Negative to Positive

Question 25

What force do batteries provide?

Answer 25

EMF. Electromotive . (Potential difference in voltage)

Question 26

Electron flow around a circuit is called an?

Answer 26

Electric currant | Movement of free elections

Question 27

An open switch means it is?

Answer 27

Off. Infinite Resistance

Question 28

N x M =

Answer 28

Joules

Question 29

Current is constant in what type of circuit?

Answer 29

Series

Question 30

What is constant in a parallel circuit?

Answer 30

Voltage

Question 31

Electrons in the outer orbit are referred to as?

Answer 31

Free Electrons

Question 32

What do Free Electrons result as?

Answer 32

Random free electrons. Current Flow

Question 33

Nucleus of an atom is?

Answer 33

Proton

Question 34

What do we need to control electrons?

Answer 34

A Power Source

Question 35

Characteristics of conductors?

Answer 35

Atoms packed loosely together

Question 36

Characteristics of insulators?

Answer 36

Atoms packed tightly together. No room for electron movement.

Question 37

Ferrous means?

Answer 37

Degree of iron in it

Question 38

Thermoplastic temperature rating?

Answer 38

70 C

Question 39

Term for “absorbs moisture “?

Answer 39

Hygroscopic.

Question 40

Type of conductor that is Hygroscopic?

Answer 40

M.I. or Mineral Insulated

Question 41

What are the 3 effects of electrical currents?

Answer 41

Chemical Thermal Magnetic

Question 42

Maximum operating temperature of Thermosetting?

Answer 42

90C

Question 43

Percentage and value for Voltage Drop, in lighting and power, for a 230V system.

Answer 43

Lighting-3% or 6.9V | Power-5% or 11.5V