Sean

Question 0

At what temperature will water freeze at

Answer 0

0 degrees Celsius

Question 1

List 3 characterists of water

Answer 1

Odourless tasteless and transparent

Question 2

What is mild steel pipe also know as

Answer 2

Low carbon steel

Question 3

Why can’t you use mild steel pipe on a fresh water system

Answer 3

It will cause coroson problems

Question 4

What is the purpose of a flash back arrestor

Answer 4

To prevent sparks from getting into the bottles

Question 5

On what type of installation would victualling joints be used

Answer 5

Sprinkler system

Question 6

When piping a steam installation what type of jointing compounds would you use on threaded joints

Answer 6

Ptfe and black foliac

Question 7

What is the circumference of a circle

Answer 7

Is the outer area of the circle

Question 8

Water can be classified as 2 types. Name the types

Answer 8

Hardness and softness

Question 9

Why do copper pipes burst when they freeze

Answer 9

Because the copper pipe expands which is not able to stand the strain which would make it burst

Question 10

What is 3000 litre of water equal to in kg

Answer 10

3000 kg

Question 11

Explain radiation and give an example

Answer 11

Is the heat that is given off in straight lines example of that is below heater

Question 12

What is the purpose of an expansion joint/loop

Answer 12

So it can give the pipe some room to expand and move

Question 13

Name 4 pure metal used in plumbing

Answer 13

Copper iron zinc and tin

Question 14

Give 2 reason for insulating a storage cistern

Answer 14

To prevent heat loss and to keep it cool during the summer

Question 15

Name 3 good metal conductors of heat

Answer 15

Copper brass and mild steel

Question 16

Explain what tempering is

Answer 16

Is when the pipe is heated then it gets cooled down after it for it to Harding

Question 17

What does everything inside the border of a drawing form

Answer 17

A contractor

Question 18

List 3 pieces of information you would find on a specification

Answer 18

The fittings to be used. The location of the barracks . The pipe to be used

Question 19

List 3 characterists of water

Answer 19

Odourless tasteless and transparent

Question 20

At what temperature will water freeze at

Answer 20

0 degrees Celsius

Question 21

What is the purpose of a regulator on a gas cylinder

Answer 21

To allow you adjust the pressure you want

Question 22

List 3 methods of joining mild steel pipe together

Answer 22

Threaded welded and electrical grooving

Question 23

What is mild steel pipe coated with to make it galvanized

Answer 23

Zinc

Question 24

What pressure is an oxygen bottle pressurised to

Answer 24

230 bars

Question 25

What reacts explosively with oxygen

Answer 25

Oil grease and soap

Question 26

Explain fusibility

Answer 26

The point at which a metal will melt or fuse with another metal

Question 27

Explain malleability

Answer 27

The ability of a metal to be worked into a new shape without breaking

Question 28

Explain elasticity

Answer 28

The ability of a material to return to its original shape after being pulled or pushed out of shape

Question 29

What 3 states does water occur in

Answer 29

Gas liquid and soilded

Question 30

Explain what an alloy is

Answer 30

An alloy is a metallic substance made by mixing two elements together one of which must be a metal

Question 31

Name 4 materials gaskets are made from

Answer 31

Insertion rubber tux earnie halite and Taylor rings

Question 32

Name 3 elements required for a fire to take place

Answer 32

Heat fuel oxygen

Question 33

What is sniffing

Answer 33

Is when you get a new cyclinder your turn it on for a slit second then turn it back off

Question 34

Explain what ductility is

Answer 34

Is the ability of a metal to be stretched without breaking

Question 35

Explain what tenacity is

Answer 35

Denote a materials ability to resist being stretched

Question 36

Maximum density explain

Answer 36

Is the temp where water will no longer expand or contract

Question 37

What is the purpose of acetone in relation to an acetylene bottle

Answer 37

The acetone acts like a sponge and soaks up the acetylene

Question 38

Name 4 types of thermal insulation used in plumbing

Answer 38

Glass fibre foam rubber ridge and foils

Question 39

What are the units for heat time and force in the a.i system

Answer 39

Julles,seconds and mutates

Question 40

Name 3 grades of mild steel

Answer 40

Medium grade heavy grade and schedule 40

Question 41

What are the units for heat time and force in the a.i system

Answer 41

Julles,seconds and mutates

Question 42

Name 3 grades of mild steel

Answer 42

Medium grade heavy grade and schedule 40

Question 43

Name 3 types of flames

Answer 43

Nutural flame oxidising flame and carburising flame