What is defined as "a stream of water or other extinguishing agent after it leaves a nozzle until it reaches the desired point"?

A. Fire flow.

B. Fire stream

C. Fire nozzle

D. Fire pressure

B. Fire stream (165)

Which of the following is NOT a basic type of fire stream?

A. Fog

B. Solid

C. Broken

D. Constant

D. Constant (165)

Solid stream nozzles are deisgned to produce a stream as ____ as possible with little shower or spray.

A. Broad

B. Diffuse

C. Narrow

D. Compact

D. Compact (165)

What characteristic does a solid stream nozzle have that other streams may not?

A. Superior flow

B. Superior reach

C. Inferior velocity

D. Inferior penetration

B. Superior reach (165)

Solid stream nozzles should be operated at ___ psi on handlines.

A. 45 psi

B. 50 psi

C. 75 psi

D. 80 psi

B. 50 psi (166)

Solid stream nozzles ashould be operated at ___ psi on master stream devices.

A. 45 psi

B. 50 psi

C. 75 psi

D. 80 psi

D. 80 psi (166)

Which of the following is the formula for determining the flow from a solid stream nozzle?

A. 1.57 x D2 x √NP

B. 29.7 x D2 x √NP

C. 14.3 x Q x √NP

D. 0.0505 x Q x √NP

B. 29.7 x D2 x VNP (166)

Which of the following is defined as "the line bounding a rounded surface"?

A. Impinge

B. Deflection

C. Periphery

D. Fog stream

C. Periphery (167)

Periphery-deflected streams are produced by deflecting water from the periphery of:

A. An imginging jet

B. The diameter of the nozzle bore

C. The exterior barrel of a fig nozzle

D. An inside circular stem in a periphery-deflected fog nozzle

D. An inside circular stem in a periphery-deflected fog nozzle (167)

What type of fog nozzle drives several jets of water together at a set angle to break the water into a fog stream of finely divided particles?

A. Straight stream

B. Inpinging stream

C. Combination stream

D. Periphery-deflected stream

B. Inpinging stream (168)

The reach of a fog stream is directly dependent on all of the following EXCEPT:

A. Wind

B. Width of the stream

C. Type of water source

D. Size of the water droplets

C. Type of water source (168)

Why are fog patterns easier to handle than solid or straight stream patterns?

A. Fog patterns help disperse the water's weight.

B. The reaction forces largely balance each other.

C. Their water droplets are not as concentrated in a narrow stream.

D. Water in droplet form wieghs less than water in solid form.

B. The reaction forces largely balance each other. (168)

Which type of fog nozzle maintains approximately the same nozzle pressure and pattern even if the gallonage supplied to the nozzle changes?

A. Automatic nozzles

B. Constant flow nozzles

C. High-pressure nozzles

D. Manually adjustable nozzles

A. Automatic nozzles (169-170)

Which type of fog nozzle is designed to flow a specific amount of water at a specific nozzle discharge pressure on all stream patterns?

A. Automatic nozzles

B. Constant flow nozzles

C. High-pressure nozzles

D. Manually adjustable nozzles

B. Constant flow nozzles (168)

Which type of fog nozzle has a number of constant flow settings, enabling the firefighter to select a flow that best suits the existing conditions.

A. Automatic nozzles

B. Constant flow nozzles

C. High-pressure nozzles

D. Manually adjustable nozzles

D. Manually adjustable nozzles (168-169)

Which type of fog nozzles are basically variable flow nozzles with pattern-change capabilities and the ability to maintain the same nozzle pressure?

A. Automatic nozzles

B. Constant flow nozzles

C. High-pressure nozzles

D. Manually adjustable nozzles

A. Automatic nozzles (169-170)

Which type of fog nozzle supplies the selected flow at the rated nozzle discharge pressure.

A. Automatic nozzles

B. Constant flow nozzles

C. High-pressure nozzles

D. Manually adjustable nozzles

D. Manually adjustable nozzles (168-169)

Which type of fog nozzle develops a fog stream with considerable forward velocity but delivers a relatively low volume of water?

A. Automatic nozzles

B. Constant flow nozzles

C. High-pressure nozzles

D. Maually adjustable nozzles

C. High-pressure nozzles (170-171)

Which type of fog nozzle discharges the same volume of wter regaurdless of the pattern setting?

A. Automatic nozzles

B. Constant flow nozzles

C. High-pressure nozzles

D. Maually adjustable nozzles

B. Constant flow nozzles (168)

Which type of fog nozzle serves as a pressure regulator for the pomper as lines are added or shut down, ensuring that all available water may be used continuously?

A. Automatic nozzles

B. Constant flow nozzles

C. High-pressure nozzles

D. Maually adjustable nozzles

A. Automatic nozzles (169-170)

Handline nozzles are designed to be placed on ___ that can easily maneuvered by firefighters?

A. Valves

B. Booster lines

C. Attack lines

D. Supply lines

C. Attack lines (171)

Which of the following is NOT a type of handline nozzle?

A. Fog

B. Solid

C. Master

D. Broken stream

C. Master (171)

What is the definition of a master stream?

A. Any fire stream that is too large to be controlled without mechanical aid.

B. A stream of water designed to produce a stream as compact as possible with little shower or spray.

C. A stream created when water is forced through a series of small holes on the discharge end of the nozzle.

D. A stream produced by deflecting water from the periphery of an inside circular stem in a periphery-deflected fog nozzle.

A. Any fire stream that is too large to be controlled without mechanical aid. (171-172)

Master stream nozzles:

A. Are broken streams only

B. Are straight streams only

C. Are either solid or fog streams

D. Are either broken or solid streams

C. Are either solid or fog streams (171-172)

Which type of master stream nozzle has three basic types: fixed, portable and combination?

A. Monitors

B. Turret pipes

C. Deluge sets

D. Elevated master streams

A. Monitors (172)

Which type of master stream nozzle is mounted on a fire apparatus deck and is connected directly to the pump by permanent piping?

A. Monitors

B. Turret pipes

C. Deluge sets

D. Elevated master streams

B. Turret pipes (172)

Which type of master stream nozzle has preplumbed waterways instead of hose?

A. Monitors

B. Turret pipes

C. Deluge sets

D. Elevated master streams

D. Elevated master streams (172-174)

Which type of master stream nozzle has a siamese connection at the supply end?

A. Monitors

B. Turret pipes

C. Deluge sets

D. Elevated master streams

C. Deluge sets (172)

Which type of master stream nozzle may be used with elevating plarforms?

A. Monitors

B. Turret pipes

C. Deluge sets

D. Elevated master streams

D. Elevated master streams (172-174)

What components make up a deluge set?

A. A detachable pipe attached to the rungs of an aerial ladder.

B. A ladder pipe attached to the end of a waterway on the bottom of the ladder.

C. Two master stream devices on a platform supplied by large diameter hoses.

D. A short length of large diameter hose with a large nozzle or large playpipe supported at the discharge end by a tripod.

D. A short length of large diameter hose with a large nozzle or large playpipe supported at the discharge end by a tripod. (172)

What type of master stream device cannot change the direction or angle of the stream while it is discharging water?

A. Monitor

B. Deluge set

C. Ladder pipe

D. Prepiped waterway

B. Deluge set (172)

Which of the following statements about elevating platform master streams is FALSE?

A. They are basically similar to those with preplumbed aerial ladders.

B. They are generally attached to the pump with 2.5" fire hoselines.

C. Some are equipped with two master streams on one platform, giving flexibility during large-scale fire operations.

D. They are different from preplumbed aerial ladders in that they are located on the aerial platform and can be more easily maneuvered by firefighters at the tip of the aerial device.

B. They are generally attached to the pump with 2.5" fire hoselines. (174)

Which type of special purpose nozzle is commonly used in aircraft fire fightin and to apply water to areas that are otherwise inaccessible to water streams?

A. Cellar nozzle

B. Piercing nozzle

C. Chimney nozzle

D. Water curtain nozzle

B. Piercing nozzle (176-177)

Which type of special purpose nozzle produces a fan-shapped stream intended to protect combustible materials from the heat of an adjacent fire?

A. Cellar nozzle

B. Piercing nozzle

C. Chimney nozzle

D. Water curtain nozzle

D. Water curtain nozzle (176)

Which type of special purpose nozzle can be lowered through loles cut in the floor or ceiling?

A. Cellar nozzle

B. Piercing nozzle

C. Chimney nozzle

D. Water curtain nozzle

A. Cellar nozzle (175)

Which type of special purpose nozzle produces a very fine, misty fog cone?

A. Cellar nozzle

B. Piercing nozzle

C. Chimney nozzle

D. Water curtain nozzle

C. Chimney nozzle (177)

Which type of special purpose nozzle may be used to protect firefighters from heat, but must cover a wide area and be reasonably heavy to be effective?

A. Cellar nozzle

B. Piercing nozzle

C. Chimney nozzle

D. Water curtain nozzle

D. Water curtain nozzle (176)

Nozzle reaction is:

A. The force put on fire hydrants as fire nozzles are closed.

B. The amount fo pressure that can be supplied to an attack line.

C. The force put on fire nozzles when hydrants are opened too quickly.

D. The force pushing back on firefighters as water is discharged from a nozzle at a given pressure.

D. The force pushing back on firefighters as water is discharged from a nozzle at a given pressure. (178)

Which of the following is the formula for calculating nozzle reaction for solid stream nozzles?

A. 1.57 x D2 x NP

B. 29.7 x D2 x √NP

C. 14.3 x Q x √NP

D. 0.0505 x Q x NP

A. 1.57 x D2 x NP (178)

Which of the following is the formula for calculating nozzle reaction for fog stream nozzles?

A. 1.57 x D2 x √NP

B. 29.7 x D2 x √NP

C. 14.3 x Q x √NP

D. 0.0505 x Q x √NP

D. 0.0505 x Q x √NP (179)

T/F: No nozzle is capable of delivering any other stream than the one for which it was designed.

True (165)

T/F: To impinge means to strike of dash about or against.

True (167)

T/F: Impinging stream nozzles usually produce a narrow-angle fog pattern.

False: Iminging stream nozzles usually produce a wide-angle fog pattern.

T/F: The minimum flow setting for interior stuctural firefighting is 50 to 60 gpm.

False: The minimum flow setting for interior structural firefighting is 95 -100 gpm.

T/F: High-pressure fog nozzles are best suited for structural fire fighting.

False: High-pressure fog nozzles are best suited for wildland fires.

T/F: Movement of ladder pipes is limited to horizontal side-to-side motions.

False: Movement of ladder pipes is limited to vertical up-and-down motions.

T/F: Most special purpose nozzles are fog stream nozzles.

False: Most special purpose nozzles are broken stream nozzles.

T/F: Broken streams produce larger droplets of water than do fog streams, giving broken streams better reach and penetrating power.

True ( 175)

T/F: The practical working limits for velocity of fire streams are within 60 to 120 feet per second.

True (178)

T/F: Portable master stream devices should not be operated above the recommended nozzle pressure unless approved by the manufacturer of the device.

True (178)