BAT BAT Water System Hydraulics & Pressure Principles

Question 1

What is the typical minimum inlet supply pressure required for a reduced pressure zone (RPZ) assembly to operate correctly?

Accepted Answer

10 psi

Answer

5 psi

Answer

25 psi

Answer

50 psi

Question 2

What does 'static pressure' refer to in a water distribution system?

Accepted Answer

Pressure in the system when no water is flowing

Answer

Pressure measured while water is flowing at full capacity

Answer

Pressure at the highest elevation point only

Answer

Pressure lost due to pipe friction

Question 3

How does elevation affect water pressure in a distribution system?

Accepted Answer

Pressure decreases as elevation increases

Answer

Pressure increases as elevation increases

Answer

Elevation has no effect on pressure

Answer

Pressure doubles for every 10 feet of elevation gain

Question 4

What is the primary purpose of a differential pressure gauge during backflow assembly testing?

Accepted Answer

To determine the pressure difference across check valves or the relief valve

Answer

To measure total system flow rate

Answer

To detect leaks in the assembly body

Answer

To measure incoming water temperature

Question 5

According to Bernoulli's principle, what happens to fluid pressure as its velocity increases in a pipe?

Accepted Answer

Pressure decreases

Answer

Pressure increases proportionally

Answer

Pressure remains constant

Answer

Pressure fluctuates randomly

Question 6

What unit is 'head pressure' most commonly expressed in within US water system calculations?

Accepted Answer

Feet of water column

Answer

Pounds per square foot (psf)

Answer

Bars

Answer

Kilopascals (kPa)