Thermal Expansion in Plumbing

Which material has the highest coefficient of linear expansion?

• Plastic uPVC

• Lead

• Copper

• Steel

What is the coefficient of linear expansion for Copper?

• 0.00018

• 0.00029

• 0.000016

• 0.000011

What does the coefficient of expansion measure?

• How much a material expands per degree of temperature change

• The weight of a material

• The color of a material

• The density of a material

Which of the following conditions can cause corrosion?

• Dry conditions

• Wet conditions

• Cold conditions

• Windy conditions

What type of metals can cause corrosion when they are different?

• Similar metals

• Dissimilar metals

• Heavy metals

• Light metals

What is one chemical that can cause corrosion?

• Water

• Acids

• Sugar

• Salt

Which of the following is a ferrous metal?

• Iron

• Copper

• Aluminum

• Gold

What is another name for electrolytic corrosion?

• Electrolysis

• Rusting

• Oxidation

• Tarnishing

What is the role of an electrolyte in electrolytic corrosion?

• It facilitates corrosion

• It prevents corrosion

• It cleans the metal

• It paints the metal

Which of the following is NOT a type of metal mentioned in plumbing ?

• Silver

• Copper

• Cast iron

• Brass