PLUMBING SCIENCE

Question 1

what is strength

Answer 1

it is when martials can withstand heavy loads without breaking

Question 2

what is the units of kelvin

Answer 2

k is the is unit

Question 3

what temperature does water freeze

Answer 3

0 degrees Celsius

Question 4

what is a pure metal

Answer 4

its when is extract from an ore

Question 5

what type of water make the pipe corridor

Answer 5

soft water

Question 6

types of non ferrous metal

Answer 6

aluminium/lead/zinc/tin

Question 7

types of plastic

Answer 7

upvc/polypropylene/abs

Question 8

what is heaviness in

Answer 8

the denseness of a material. a dense material will be heavy in relations to its size

Question 9

what is calvanic corrosions

Answer 9

when two dissimilar metals are in contract with each other through
presence of an electrolyte

Question 10

what degrees does water melt at

Answer 10

32 Celsius

Question 11

what are the units of velocity

Answer 11

m/s

Question 12

what is the unit of force

Answer 12

N

Question 13

what is the formlour for mass

Answer 13

mass equal length times width times height equal volume in m3

Question 14

what is the charge of proton

Answer 14

+1

Question 15

what is the charge of neutron

Answer 15

0

Question 16

what is the charge of electron

Answer 16

-1

Question 17

what is a natural gas

Answer 17

is a gas mixture of gaseous hydrocarbons consisting of primarily of methane

Question 18

what is a first class lever

Answer 18

a first class is one where fulcrum lies between the effort

Question 19

what are the units of pressure

Answer 19

pa

Question 20

what are the units of flow rate

Answer 20

m3/s

Question 21

how does limescale build up

Answer 21

Temporary hard water

Question 22

si unit for electrical current

Answer 22

ampere

Question 23

what is the fuse for a domestic appliance

Answer 23

13 amp

Question 24

how do you calculate heat capacity

Answer 24

kj/kg/0c

Question 25

what cause siphonage

Answer 25

increase in pressure

Question 26

What can limestone cause

Answer 26

Temporary hard water

Question 27

What is soft water

Answer 27

Water that had low minerals

Question 28

What does wras mean

Answer 28

Water regulations advisory scheme

Question 29

3 source of water

Answer 29

Rainwater surface water
Groundwater

Question 30

What is a reliable water source

Answer 30

Artesian wells

Question 31

What makes water “plumbo-solvent”?

Answer 31

Soft water with added CO2

Question 32

What system supplies water directly to all outlets without storage?

Answer 32

Direct cold water system

Question 33

What is the typical size of a rising main for most dwellings?

Answer 33

15mm

Question 34

What is fluid category 1 water classified as?

Answer 34

Wholesome water for domestic use

Question 35

In indirect systems, what should cold water cisterns provide?

Answer 35

Adequate storage capacity

Question 36

What material is commonly used for modern cold water supply pipes?

Answer 36

Medium-Density Polyethylene (MDPE)

Question 37

Who is responsible for maintaining the communication pipe?

Answer 37

Water undertaker

Question 38

In an indirect cold water system, which outlet is usually fed directly by the mains?

Answer 38

Kitchen sink

Question 39

What is the final stage of the water treatment process?

Answer 39

Disinfection