Chapter 8

Question 1

What is a flowmeter?

Answer 1

Mechanical device installed in a discharge line that senses the amount of water flowing and provides a readout in units of gallons per minute or liters per minute

Question 2

What are the two most common types of flow meters?

Answer 2

Paddle wheel and spring probe

Question 3

During emergency operations driver operators commonly use one or more of the following methods for determining pressure loss and pump discharge pressure?

Answer 3

Flow meters, hydraulic calculators, pump charts, condensed q method, GPM flowing

Question 4

What is the Condensed Q Formula?

Answer 4

It’s used for operations in which the friction loss can be determined for 3-,4-,5- inch hose.

Question 5

What are two types of Hydraulic calculators?

Answer 5

Manual and Electronic

Question 6

Which hydraulic calculator has a slide or dial that can be moved to cover or reveal rates of flow, size of hose, and Links of hose layout in order to come to conclusion to a problem?

Answer 6

Manual calculator

Question 7

Which hydraulic calculator is specifically programmed to allow you to input the variables of each hose layout, including the length, diameter of hose, and elevation changes?

Answer 7

Electronic hydraulic calculator

Question 8

What type of chart is carried on fire apparatus to aid the pump operator and determining the pump discharge pressure when supplying hose lines?

Answer 8

Pump Chart

Question 9

The GPM flowing method is applicable to?

Answer 9

Fog and Solid streams

Question 10

How accurate should flowmeters be if properly working and calibrated?

Answer 10

Plus or minus 3%

Question 11

Which hose lines does the condensed Q formula work for?

Answer 11

3-,4-, 5 inch

Question 12

When operating an apparatus equipped with a flow meter the number and types of nozzle on lines operating from the standpipe may be factored by adding the flow rate for each nozzle together and pumping the volume of water that?

Answer 12

Matches the rate

Question 13

What is the equation for determining friction loss in a 4-in hose using the condensed Q formula?

Answer 13

FL=Q2/5

Question 14

What is the equation for determining friction loss in a 3-in hose using the condensed Q formula?

Answer 14

FL= Q2

Question 15

Each discharge equipped with a flow meter must have a digital readout display mounted within?

Answer 15

6 inches of the control valve for that discharge

Question 16

Using a flow meter during relay pumping makes it possible to feed a supply line without having to know?

Answer 16

The volume of water flowing from the receiving pumper

Question 17

Flow meters must provide a readout in increments no larger than?

Answer 17

10 GPM (40 L/min) or less

Question 18

If the volume of water at the nozzle suddenly decreases, but there is no reduction in the flow meter reading, what is the most likely assumption?

Answer 18

The hose line has burst

Question 19

What type of information is provided by flow meters?

Answer 19

Water flow in GPM

Question 20

What is the equation for determining friction loss using the condensed Q formula for 5-in hose?

Answer 20

FL=Q2/15