Engineering Utilities 2 (QUIZ #1)

What is the approximate volume expansion of fresh water when it freezes?

• 1%

• 5%

• 9%

• 15%

What is the definition of plumbing?

• The process of building aqueducts.

• The art and science of installing pipes, fixtures, and other apparatus to convey and supply water and discharge waste.

• The process of purifying water.

• The act of excavating pits for waste disposal.

What is the specific heat of water in the metric system?

• 1 calorie

• 1 kilocalorie

• 1 joule

• 1 kilojoule

How should new or repaired water mains be treated before use?

• They should be filled with strong chlorine solution for at least 24 hours and then flushed.

• They should be filled with concrete to prevent leaks.

• They should be left to air dry for at least 48 hours.

• They should be sealed with lead joints.

What is the specific gravity of pure water at 4°C?

• 0

• 1

• 10

• 100

Which type of pipe is made from an alloy of cast iron and silicon and is widely used in chemical laboratories?

• Cast iron soil pipe

• Asbestos pipe

• Vitrified clay pipe

• Acid resistant cast iron pipe

What is the normal pressure range for a residential house?

• 10 to 20 psi

• 30 to 40 psi

• 50 to 60 psi

• 70 to 80 psi

Why is galvanized steel pipe not ideal for hot water supply lines?

• It is too expensive.

• It deteriorates faster when used with hot water.

• It is too heavy for installation.

• It is not resistant to acid.

What is a characteristic of Vitrified clay pipe?

• It is flexible and light in weight.

• It is susceptible to damage from hot water and chemicals.

• It is brittle and should not be laid on an unstable base.

• It is made from mild steel.

What is a branch pipe?

• A pipe that is laid underground along the street.

• A vertical supply pipe.

• A pipe that connects to the water main.

• A horizontal pipe that serves the faucets or fixtures.