Self test questions: B-1 / B-2

Question 1

How is potable water defined?

Answer 1

Water that meets the prescribed standards / is safe to drink / fit for domestic purposes w/o further treatment

Question 2

How is water pipe defined?

Answer 2

a pipe that conveys water from a public water main or private water source to the inside of a building

Question 3

True or False: water is a natural solvent

Answer 3

true

Question 4

What is the name used to describe the water from a public water system after it has passed through the consumer’s service connection?

Answer 4

Used water

Question 5

As water flows through a centrifugal pump, it slows down and the pressure does what?

Answer 5

increases

Question 6

What information is required when using a performance curve to select a pump?

Answer 6

Pump head / pump capacity

Question 7

What is the max static pressure allowed at a fixture before a PRV is installed?

Answer 7

80psi (550 kPa)

Question 8

What is the purpose of series installation of PRV?

Answer 8

Two - stage pressure reduction

Question 9

Where is a corporation valve installed?

Answer 9

On a municipal water main to permit joining of the water service pipe

Question 10

When may a private water supply system be interconnected w/ a public water supply system?

Answer 10

No interconnection is permitted

Question 11

What is the Hazen - Williams formula used to calculate?

Answer 11

Pressure drop caused by friction in pipe

Question 12

How can ductile - iron pipe / fittings be joined?

Answer 12

push on, MJ / flanged joints

Question 13

True or False: A push - on type joints uses a gasket that is installed in the spigot pipe end

Answer 13

False

Question 14

When must PVC pipe be bevelled to match factory specifications?

Answer 14

For push on joints only

Question 15

What methods are used to resist damage to underground piping from thrust forces?

Answer 15

Thrust block, thrust anchors and joint restraint

Question 16

Which shut off valve is located on the water service, immediately inside the building?

Answer 16

Main stop and drain

Question 17

Which water meter type is commonly used to measure / record small water flows?

Answer 17

Positive displacement (rotating disk meter?)

Question 18

What will happen to an anode rod that is located in a hot water storage heater?

Answer 18

Decreases in size

Question 19

What is the purpose of a service loop on a water service line?

Answer 19

to allow for settlement or mvmt of the the water main.

Question 20

When does the code require that a check valve be installed on a water service pipe?

Answer 20

When the water rated pipe is rated for cold water only

Question 21

What is a direct fired hot water heater?

Answer 21

The heating source is located at the hot water storage tank

Question 22

Circ pumps on potable water systems must be what type?

Answer 22

bronze body

Question 23

What is the recommended minimum required water temperature for domestic hot water storage?

Answer 23

60 C

Question 24

Which type of water service pipe is not rated for hot water?

Answer 24

Polyethylene

Question 25

Which condition would most likely cause water hammer?

Answer 25

Quickly closing a valve

Question 26

Can a shut - off valve be installed on the pipe bn any tank / the relief valve , or on the discharge lines from the relief valve?

Answer 26

No

Question 27

True or False: A water distribution system shall be installed so the system can be drained or blown out with air

Answer 27

True

Question 28

Every fixture supplied w/ separate hot / cold water controls shall:

Answer 28

Hot on the left
Cold on the right

Question 29

Which fixtures must have a shut off valve provided on the water supply pipe?

Answer 29

Water closets.