Which of the following is NOT a method for determining pressure loss and required pump discharge pressure?

A. Flow charts

B. Hand method

C. Hydraulic calculators

D. Condensed "Q" method

A. Flow charts (251)

Flowmeters provide:

A. Elevation differencial

B. Water flow in gpm

C. Pump discharge pressures

D. Total friction loss in the system

B. Water flow in gpm (251)

Flowmeters are particularly advantageous in:

A. Supplying pumpers in remote settings.

B. Supplying multiple hoselines or master streams.

C. Supplying hoselines or master stream devices equipped with fog nozzles.

D. Supplying hoselines or master stream devices equipped with automatic nozzles.

D. Supplying hoselines or master stream devices equipped with automatic nozzles. (251)

Flowmeters are allowes to be used instead of pressure gauges on all discharges:

A. 1 to 2.5" in diameter.

B. 1.5 to 3" in diameter.

C. 3, 4 and 5" in diameter.

D. 2.5 to 5" in diameter.

B. 1.5 to 3" in diameter. (251)

What size discharges may be equipped with a flowmeter but must also have a pressure gauge?

A. 1.5" and under.

B. 2.5" and under.

C. 1.5" and 2.5".

D. 3.5" or larger.

D. 3.5" or larger. (251-252)

Flowmeters must provide a readout in increments no larger than:

A. 10 gpm

B. 20 gpm

C. 30 gpm

D. 40 gpm

A. 10 gpm (252)

Which of the following statements about a spring probe flowmeter is TRUE?

A. In is located at the top of the pipe so that sediment does not depsit on it.

B. Its placement reduces the problems of impeded flow and damage by debris.

C. It is relatively maintenance free because the spring probe is the only moving part.

D. In may be used instead of pressure gauges on all discharges regardless of diameter.

C. It is relatively maintenance free because the spring probe is the only moving part. (253)

How accurate should flowmeters be when properly calibrated and in good working condition?

A. +/- 1%

B. +/- 3%

C. +/- 5%

D. +/- 7%

B. +/- 3% (253)

Flowmeters have a discharge readout display mounted within ____ of the valve control for each discharge equipped.

A. 3"

B. 6"

C. 10"

D. 12"

B. 6" (253)

A central flowmeter device allows the DO with all of the following EXCEPT:

A. The amount of foam being flowed.

B. The required pump discharge pressure needed.

C. The flow through any particular discharge at that time.

D. The total amount of wate being flowed through the pump at that time.

B. The required pump discharge pressure needed. (253)

Which of the following is NOT a flowmeter application?

A. Relay pumping

B. Standpipe operations

C. Pump discharge pressures

D. Diagnosing waterflow problems

C. Pump discharge pressures (253)

If water volume at the nozzle suddenly diminishes, but there is no reduction in the flowmeter reading, what is the most likely assumption?

A. The hose has burst.

B. The hoseline is kinked.

C. The hose coupling is leaking.

D. The midline valve is partially closed.

A. The hose has burst. (253)

Use of a flowmeter during relay pumping makes it possible to feed a supply line without having to know the:

A. Length of hoseline.

B. Amount of friction loss.

C. Whether the nozzles are above or below the pump.

D. Number of gallons flowing from the pumper receiving the water.

D. Number of gallons flowing from the pumper receiving the water. (253)

When using a flowmeter for relay pumping, as the engine speed increases:

A. The discharge and gpm reading increase.

B. The discharge and gpm reading decrease.

C. The discharge decreases and the gpm reading increases.

D. The discharge increases and the gpm reading decreases.

A. The discharge and gpm reading increase. (253)

When using a flowmeter for relay pumping, do not allow the incoming pressure to drop too much below:

A. 20 psi

B. 30 psi

C. 40 psi

D. 50 psi

A. 20 psi (253)

When using a flowmeter for standpipe operations, determine the number and type of nozzles connected to the standpipe, all ____ for each nozzle flowing and then pump the volume of water that matches this figure.

A. 50 psi

B. 100 psi

C. The minimum rated flow

D. The maximum rated flow

D. The maximum rated flow (253)

Manual or mechanical hydraulic calculators operate by moving a slide or dial in which the ____ is (are) indicated.

A. Water flow

B. Size of hose

C. Length of the hose lay

D. All of the above

D. All of the above (254)

Electronic hydraulic calculators allow the DO to input all of the following EXCEPT:

A. Water flow

B. Size of hose

C. Length of hose lay

D. Pump discharge pressure

D. Pump discharge pressure (254)

Which of the following statements about hydraulic calculators is TRUE?

A. The are particularly advantageous when supplying hoselines or master stream devices equipped with automatic nozzles.

B. They make it possible for DOs to pump the correct volume of water to nozzles without having to know the length of hoseline.

C. They make it possible to feed a supply line without having to know the number of gallons flowing from the pumper receiving the water.

D. They enable the DO to determine the pump discharge pressure required to supply a hose layout without having to perform tedious mental hydraulic calculations.

D. They enable the DO to determine the pump discharge pressure required to supply a hose layout without having to perform tedious mental hydraulic calculations. (254)

What is the first step in developing a pump chart?

A. Calculating required pump discharge pressures.

B. Providing established departmental residual pressures.

C. Determining number of feet of hose used by the department.

D. Identifying all nozzles, devices and hose layouts uesd by the department.

D. Identifying all nozzles, devices and hose layouts uesd by the department. (255)

When calculating the required pump discharge pressures for each of the listed layouts on a pump chart, round pump discharge pressure to the nearest:

A. 5 psi

B. 10 psi

C. Whole number

D. Decimal point

A. 5 psi (255)

What is the hand method used to estimate?

A. Friction loss

B. Pump pressure

C. Water flow rate

D. Discharge volume

A. Friction loss (258)

To what size hoselines may the hand nothod be applied?

A. 1.75" and 2.5"

B. 1.5" and 2.5"

C. 1.75" and 3"

D. 3, 4 and 5"

A. 1.75" and 2.5" (258)

When the hand method is applied to 2.5" hose, each finger is numbered at the base in terms of:

A. Liters per minute.

B. Gallons per minute.

C. Hundreds of liters per minute.

D. Hundreds of gallons per minute.

D. Hundreds of gallons per minute. (258)

Using the hand method, determine the total pressure loss due to friction in 200' of 2.5" hose when a fog nozzle is flowing 150 gpm at 100 psi.

A. 4.5 psi

B. 9.0 psi

C. 9.5 psi

D. 13.5 psi

B. 9.0 psi (258)

In order for the hand method to be applied to 1.75" hose, calculate the friction loss in 100' of 1.75" hose by going to the finger that corresponds to the flow you are using and multiplying the number at the tip of the finger by:

A. 2

B. 4

C. The number at the base of the same finger.

D. The number at the base of the finger to the right.

C. The number at the base of the same finger. (258)

To what size hoselines may the Condenced "Q" formula be applied?

A. 1.75" and 2.5"

B. 1.5" and 2.5"

C. 1.75" and 3"

D. 2.5, 3, 4 and 5"

D. 2.5, 3, 4 and 5" (258)

What is the equation for determining friction loss in 4" hose using the Condenced "Q" formula?

A. FL per 100' = Q2

B. FL per 100' = Q2 ÷ 5

C. FL per 100' = Q2 ÷ 15

D. FL per 100' = Q2 ÷ 20

B. FL per 100' = Q2 ÷ 5 (259)

What does the DO need to know in order to use the GPM flowing method?

A. Water flow in gpm

B. Type of nozzle

C. Total pressure loss in psi

D. Discharge pressure in psi

A. Water flow in gpm (260)

When using the GPM flowing method for 2.5" hose, subtract ____ from the first two numbers of the gpm flow.

A. 5

B. 10

C. 15

D. 20

B. 10 (260)

T/F: The number displayed on a flowmeter requires no futher calculation because it reflects how much water is moving through the discharge valve and consequently the nozzle.

True (251)

T/F: It is important that the DO be in communication with the firefighters on the nozzles when operating at a standpipe.

True (254)

T/F: The hand method starts with the thumb of the right hand.

False: The hand method starts with the thumb of the LEFT hand. (258)

T/F: The GPM flowing method is applicable only to solid streams.

False: The GPM method is applicable to both solid and fog streams. (260)

T/F: The GPM flowing method can only be used for 2.5" hose.

False: The GPM flowing method can be used for hose sizes other than 2.5". (260)