Chapter 14 Water Supply Systems

Question 1

A dry hydrant provides access to

Answer 1

Static water source

Question 2

Fire fighters may need to hold on to the _____ while filling a self-expanding portable tank

Answer 2

Collar

Question 3

How close must a fire engine get to a static water source to be able to draft directly from it through hard suction hose

Answer 3

20 ft

Question 4

How many gallons per minute can a tanker shuttle operation deliver without interruption

Answer 4

Several hundred

Question 5

I’m general, mobile water supply apparatus (tankers) carry ____ of water

Answer 5

1000 to 3500 gal

Question 6

Pressure in a water distribution system during average consumption is ____ pressure

Answer 6

Normal operating

Question 7

What is the maximum capacity of typical portable water tanks

Answer 7

5000 gal

Question 8

What is the realistic minimum usable residual pressure from a water distribution system for firefighting operations

Answer 8

20 psi

Question 9

When water is motionless, which kind of energy does it have

Answer 9

Potential

Question 10

Friction loss is ____ proportional to the length of a hose

Answer 10

Directly

Question 11

I’m a well designed water distribution system, which type of pattern do the water mains follow

Answer 11

Grid

Question 12

The flow or quantity of water moving is usually measured in

Answer 12

Gallons per minute

Question 13

The quantity of water that is being moved through a pipe or hose is termed the

Answer 13

Flow

Question 14

What should be done to avoid water hammer

Answer 14

Open and close all valves slowly

Question 15

What is a common size if a hydrant outlet

Answer 15

2 1/2”

Question 16

Which is the NFPA color code for a hydrant flowing 1000 to 1499 gpm

Answer 16

Green

Question 17

Which is the NGPA color code for a hydrant flowing less than 500gpm

Answer 17

Red

Question 18

Which pressure must be measured to calculate the quantity of water flowing through a hydrant discharge

Answer 18

Residual

Question 19

Which type of pressure is created by the difference in height between a water source and the point of discharge

Answer 19

Elevation