Cheat Sheet 1 (d)

Question 1

What is the advantage of ductile iron vs polyvinyl

Answer 1

Ductile iron withstands heavy loads

Question 2

What would you use to repair a small leak on a water main without decreasing the pressure

Answer 2

A repair clamp

Question 3

What is the definition of water hammer

Answer 3

It’s a rapid increase and decrease in water flow

Question 4

On a dry barrel fire hydrant where is the valve located

Answer 4

At the base

Question 5

What is the separation of a water main and gravity or pressure sewer line?

Answer 5

At least 6 feet preferably 10 feet, 6 inches horizontally, preferably 12 inches vertically

Question 6

The tuberculation process in a water system is…

Answer 6

A chemical process which results in the build up of minerals

Question 7

The tuberculation process in a water system is…

Answer 7

A chemical process which results in the build up of minerals

Question 8

After the chlorine demand is satisfied the amount of chlorine present in the water is the..

Answer 8

Residual chlorine

Question 9

Chloramines are formed by the combination of chlorine and what?

Answer 9

Ammonia

Question 10

Back flow is a condition that…

Answer 10

Has reverse flow due to back pressure