Chapter 5

Question 1

The piping for fire protection and domestic/industrial services for private water supply systems are:

a. prone to multiple breakdowns.
b. cost prohibitive for businesses.
c. almost always separate.
d. generally interconnected.

Answer 1

c. almost always separate

Question 2

In order to convert head in feet to head pressure in psi, you must divide the number of feet by:

a. 6.32.
b. 2.304.
c. 1.50.
d. 4.302.

Answer 2

b. 2.304

Question 3

Why does the third principle of friction loss demonstrate the advantage of larger size hose?

a. For the same discharge, friction loss varies inversely as the tenth power of diameter of hose.

b. For the same discharge, friction loss varies inversely as the second power of diameter of hose.
c. For the same discharge, friction loss varies inversely as the third power of diameter of hose.
d. For the same discharge, friction loss varies inversely as the fifth power of diameter of hose.

Answer 3

d. For the same discharge, friction loss varies inversely as the fifth power of diameter of hose

Question 4

Most commonly, private water supply systems receive their water from a(an):

a. nearby lake or reservoir.
b. municipal water supply system.
c. underground well.
d. cistern.

Answer 4

b. municipal water supply system

Question 5

Which means of moving water uses one or more pumps that take water from a primary source and discharge it through filtration and treatment processes?

a. Forced distribution system
b. Linear pumping system
c. Primary pumping system
d. Direct pumping system

Answer 5

d. Direct pumping system

Question 6

The fourth principle of friction loss states that for a given velocity, friction loss is:

a. widely variable, regardless of pressure on the water.
b. inversely proportional to the pressure on the water.
c. increased by 25% for every 25% increase of pressure on the water.
d. approximately the same, regardless of pressure on the water.

Answer 6

d. approximately the same, regardless of pressure on the water.

Question 7

The fifth principle of pressure states that the pressure of a liquid in an open vessel is:

a. proportional to the density of the liquid.
b. variable for similar liquids.
c. Dependent upon the vessel size
d. independent of the density of the liquid

Answer 7

a. proportional to the density of the liquid