30Q Flashcards
What unit is commonly used to measure water pressure in a plumbing system
Pascals
Why is copper used a lot in plumbing
It doesn’t corrode and conducts heat well
5 reason why sold material breakdown
Oxidisation
Which principle is demonstrated when warm water rises and cool water sinks in a system?
Convection
Which of the following explains the resistance of a material to being stretched or pulled? Tensile strength
Tensile strength
Which metal is often avoided in modern plumbing due to its toxicity?
Lead
15 Which of the following is the approximate boiling point of water at standard atmospheric pressure?
100c
16 Which gas property primarily allows it to be compressed and used in pressurized systems?
Compressibility
What is the term for the energy required to change a substance from a liquid to a gas without changing its temperature
latent heat
Which of the following units is commonly used to measure energy?
joule
What is category 1 water?
Wholesome water
What is category 2 water?
Fluid with a health hazard
What is cat 5 water
Serious hazard fluid
What is black flow
When water goes the opposite way
How does a valvue help
Yes
