Ch5 Water Supply

Question 1

Weight of 1 cu ft of water

Answer 1

62.5 lb

Question 2

1 cu ft of water is ____ gallons

Answer 2

7.5 gal

Question 3

Fluid pressure is _________ to the surface on which it acts

Answer 3

Perpendicular

Question 4

The pressure in a confined body of water at rest is _____ at all points

Answer 4

Equal

Question 5

The pressure of a fluid in an open container is proportional to its _____

Answer 5

Depth

Question 6

How much force does water exert for every foot of height?

Answer 6

0.434 psi

Question 7

Water pressure increases 1 psi for every ___ft of depth

Answer 7

2.3 ft

Question 8

The pressure in a closed water system at rest

Answer 8

Static pressure

Question 9

The vertical force exerted by the weight of water as a function of height

Answer 9

Head pressure

Question 10

The force required to push a column of water up 2.3 ft

Answer 10

1 psi

Question 11

The pressure of water in an open container is ___________ of the shape and volume of the container

Answer 11

Independent

Question 12

The pressure a fluid exerts is ____________ to the density of that fluid

Answer 12

Proportional

Question 13

The weight of the air above us is equivalent to the pressure exerted by ____ft of water

Answer 13

33.9 ft

Question 14

Low flow of water that creates almost no turbulence, and all of the water molecules move along smoothly

Answer 14

Laminar flow

Question 15

The most common resistance to water flow

Answer 15

Friction loss

Question 16

Pressure measured at the point where water is leaving the system

Answer 16

Flowing pressure

Question 17

The minimum residual pressure that should be allowed

Answer 17

10 psi

Question 18

Two options to keep residual pressure from dropping below 10 psi

Answer 18

• Reduce discharge flow

- Increase water supply with another source

Question 19

Pressure at which a standard Class A pumper is rated to deliver its max volume of water

Answer 19

150 psi

• 70% at 200 psi
• 50% at 250 psi