5 Principles Of Water

Question 1

Water can extinguish fire and soul ways it can cool or absorbency from the fire as well as

Answer 1

Smother oxygen from fire

Question 2

What extinguishing principal may also occur when water converts to steam was in a closed space

Answer 2

Smothering

Question 3

True false water has greater he absorbing capacity than other common extinguishing agents

Answer 3

True

Question 4

What are converted to steam occupies approximately how many times its original volume

Answer 4

1700 times

Question 5

How much does water weigh per gallon

Answer 5

8.3 pounds

Question 6

Simple measure of weight usually expressed in pounds or kilograms

Answer 6

Force

Question 7

The speed of fluid travels through hose or pipe is often referred to as

Answer 7

Velocity

Question 8

The first principle is, pressure is perpendicular to

Answer 8

Any surface on which it acts

Question 9

Second principal, Fluid pressure at a point in the fluid at rest is the same intensity

Answer 9

In all directions, otherwise used in hydrostatic testing.

Question 10

Third principle, pressure applied to a confined fluid is transmitted

Answer 10

equally in all directions

Question 11

the fourth principal, Pressure of a liquid in an open vessel is proportional to

Answer 11

its depth

Question 12

the fifth principal, Pressure of the liquid and an open vessel is proportionate to the

Answer 12

density of the liquid

Question 13

Sixth principle, the pressure of a liquid at the bottom of the vessel is independent of

Answer 13

the shape of the vessel

Question 14

Atmospheric pressure is what at sea level

Answer 14

14.7 psi

Question 15

Any pressure less than atmospheric

Answer 15

Vacuum

Question 16

For every foot increase in elevation how many PSI is gained

Answer 16

0.434 psi

Question 17

To convert head in feet to head pressure you must divide the number of feet by

Answer 17

2.304

Question 18

Pressure found a new water distribution system during normal consumption demands is considered what

Answer 18

normal operating pressure

Question 19

All water is flowing from a discharge opening the Ford velocity pressure is considered what

Answer 19

flow pressure

Question 20

What is used to measure the forward velocity of flow pressure

Answer 20

Pitot gauge

Question 21

Gain or loss of pressure in a hose line due to change in elevation, a.k.a. elevation loss

Answer 21

Elevation pressure

Question 22

Loss of pressure created by the turbulence of water moving against the interior walls of the hose or pipe

Answer 22

Friction loss

Question 23

Older hose may have great affection loss than newer because

Answer 23

Older hose is not as smooth on the inside as new or hose

Question 24

The first friction loss principle states if all of the conditions are the same friction loss varies directly with

Answer 24

The length of hose or pipe

Question 25

Second principle of friction loss states when hose are the same size friction loss varies approximately with

Answer 25

The square of the increase in velocity of the flow

Question 26

Force created by rapid deceleration of water, causes violent increase in pressure powerful enough to rupture piping or damage fixtures

Answer 26

Waterhammer

Question 27

Water supply system that utilizes lateral feeders for improved distribution

Answer 27

Grid system

Question 28

Part of an overall water supply system that receives the water from the pumping station and delivers it throughout the area to be served

Answer 28

Distribution system

Question 29

Fire hydrant that receives water from only One Direction is known as

Answer 29

A dead end hydrant

Question 30

When a fire hydrant receives water from two or more directions it is said to have

Answer 30

Circulating feed or a looped line

Question 31

Average amount of water used per day on the total amount of water used any water distribution system over the period of one year

Answer 31

The average daily consumption

Question 32

Maximum total amount of water used during any 24 hour interval within a three-year period

Answer 32

Maximum daily consumption

Question 33

Maximum amount of water used in any one hour interval over the course of the day

Answer 33

Peak hourly consumption

Question 34

What is considered to be virtually what

Answer 34

Incompressible