Chapter 8 Flashcards
1.Flowmeters reflect water pressure that will be discharged through the nozzle: (282)
A.in ideal conditions.
B.if the hoseline is functioning at its rated capacity.
C.if the hoseline is functioning at least 75% of its rated capacity.
D.after the hoseline has been operational for more than two to three minutes.
B.if the hoseline is functioning at its rated capacity.
2.Flowmeters are especially advantageous when automatic nozzles are employed with handlines or master stream devices because automatic nozzles may lead driver/operators to: (282)
A.allow the discharge pressure to vary excessively.
B.allow the discharge pressure to quickly overtake the water supply.
C.supply excessive discharge pressures, creating a high gallon (liter) per minute flow.
D.supply insufficient discharge pressures, creating a low gallon (liter) per minute flow.
D.supply insufficient discharge pressures, creating a low gallon (liter) per minute flow.
3.Which statement about the flowmeter is MOST accurate? (282)
A.It is generally accurate within 10 percent of actual water flow.
B.It is generally accurate within 25 percent of actual water flow.
C.It serves as a check to verify calculations based on friction loss, elevation pressure, and length of hoseline.
D.It relieves you from relying on calculations based on friction loss, elevation pressure, and length of hoseline.
D.It relieves you from relying on calculations based on friction loss, elevation pressure, and length of hoseline.
4.Which type of flowmeter is mounted at the top of a straight section of discharge pipe so that only a small portion of the device extends into the waterway? (282)
A.Bypass
B.Paddlewheel
C.Front mount
D.Spring probe
B.Paddlewheel
5.Which type of flowmeter uses a sensor to measure the speed at which it spins and translates the information into a flow measurement? (282)
A.Bypass
B.Paddlewheel
C.Front mount
D.Spring probe
B.Paddlewheel
6.Which type of flowmeter employs a stainless steel spring probe to detect water movement in discharge piping? (282)
A.Bypass
B.Paddlewheel
C.Front mount
D.Spring probe
D.Spring probe
7.Which type of flowmeter has only one simple moving part and tends to require little maintenance? (282)
A.Bypass
B.Paddlewheel
C.Front mount
D.Spring probe
D.Spring probe
8.A flowmeter should be accurate to a tolerance of plus or minus: (282)
A.1 percent.
B.3 percent.
C.6 percent.
D.10 percent.
B.3 percent.
9.Each discharge equipped with a flowmeter must have a digital readout display mounted within: (282)
A.2 inches (50 mm) of the control valve for that discharge.
B.6 inches (150 mm) of the control valve for that discharge.
C.8 inches (200 mm) of the control valve for that discharge.
D.12 inches (300 mm) of the control valve for that discharge.
B.6 inches (150 mm) of the control valve for that discharge.
10.Which is MOST likely to be the cause if a driver/operator receives a message from an attack team that the volume of water at the nozzle has suddenly decreased without a corresponding change at the flowmeter? (283)
A.A hoseline may have burst.
B.The water supply has been compromised.
C.An object has fallen on top of the hoseline.
D.The attack team is improperly using appliances.
A.A hoseline may have burst.
11.Why are flowmeters useful in relay pumping operations? (283)
A.A volume of water flowing from a receiving pumper can be increased substantially.
B.A receiving pumper can refill at a much quicker pace and the driver/operator can focus on tasks.
C.All pumpers in the operation can refill with the use of fewer personnel.
D.The driver/operator may feed a supply line without having to know the volume of water flowing from receiving pumper.
D.The driver/operator may feed a supply line without having to know the volume of water flowing from receiving pumper.
12.When a line from a standpipe operation is shut down, the pressure: (283)
A.must be entirely shut down and the system restarted.
B.must be increased, or the standpipe system will not flow enough water through remaining hoselines.
C.must be lowered accordingly, or the standpipe system will attempt to flow excess water through remaining hoselines.
D.can remain the same, as the standpipe system will automatically adjust and the remaining hoselines will flow correctly.
C.must be lowered accordingly, or the standpipe system will attempt to flow excess water through remaining hoselines.
13.The driver/operator must consider that when a standpipe or hoseline is charged, there: (284)
A.may be residual pressure that will cause flow before nozzle is opened.
B.is no flow through the system or hose layout until the nozzle is opened.
C.will be a significant delay from the time the nozzle is opened until full flow.
D.can be significant flow through the system even when the nozzle is unopened.
B.is no flow through the system or hose layout until the nozzle is opened.
14.Which statement about manual hydraulic calculators is MOST accurate? (284)
A.Consists of a graph in which the intersections of variables provide pump discharge pressure
B.Consists of multiple charts in which the user finds rates of flow, size of hose, and length of hose layout
C.Consists of index cards that are cross-referenced to rates of flow, size of hose, and length of hose layout
D.Consists of a slide or dial that can be moved to cover or reveal rates of flow, size of hose, and length of hose layout
D.Consists of a slide or dial that can be moved to cover or reveal rates of flow, size of hose, and length of hose layout
15.Which statement about electronic hydraulic calculators is MOST accurate? (284)
A.Once pump discharge pressure is determined, it must also be manually verified.
B.After variables have been entered, the user must enter the correct formula to arrive at pump discharge pressure.
C.Once variables have been entered, the calculator applies preprogrammed formulas to arrive at pump discharge pressure.
D.Once variables have been entered, the correct formula is shown and the user must manually arrive at pump discharge pressure.
C.Once variables have been entered, the calculator applies preprogrammed formulas to arrive at pump discharge pressure.
16.Electronic hydraulic calculators may be handheld or may be: (284)
A.permanently affixed to the inside of the driver’s door.
B.integrated into the mobile data communications device.
C.permanently affixed to a location near the pump operator’s panel.
D.located at the station and calculations are provided over the radio as they are needed.
C.permanently affixed to a location near the pump operator’s panel.
