CH5

Question 1

Firefighters can produce a _______ with a fixed orifice and a smooth bore nozzle.

Answer 1

Solid fire stream
pg 188

Question 2

Solid stream nozzle flow gradually reduces until just before the ______. At that point, the nozzle becomes a cylindrical bore that gives the water a round shape at discharge.

Answer 2

Orifice
pg 188

Question 3

The size of a nozzle’s ______ _______ determines the flow and reach of a solid stream tip when the correct pressure goes to the nozzle.

Answer 3

discharge orifice
pg 188

Question 4

A fog nozzle is sometimes referred to as a

Answer 4

spray nozzle
pg 190

Question 5

A ______ may be produced by deflection at the periphery, by impinging jets of water, or by a combination of those two methods.

Answer 5

fog stream
pg 190

Question 6

_______ fog streams deflect water around a circular stem inside the nozzle.

Answer 6

Periphery-deflected
pg 190

Question 7

_________ fog nozzles break water into fine, evenly divided droplets by driving several jets of water together at an angle.

Answer 7

Impingement
pg 190

Question 8

A ______ nozzle flows a specific volume of water on all stream patterns at a specific nozzle discharge pressure.

Answer 8

Constant flow
pg 192

Question 9

These nozzles let the firefighter select the required flow rate for mitigation.

Answer 9

Selectable gallonage nozzles
pg 192

Question 10

_______ nozzles are a type of variable flow nozzle that can change patterns while maintaining a nozzle pressure.

Answer 10

Automatic
pg 192

Question 11

______ nozzles adjust to fluctuating water flow to maintain effective pressure and a consistent fire stream in all ranges.

Answer 11

Automatic
pg 193

Question 12

Within its design limits, an _______ nozzle maintains its constant operating pressure even if the PDP rises above the pressure level of an opening pump.

Answer 12

Automatic
pg 193

Question 13

Three basic types of master stream devices are

Answer 13

Fixed, combination, portable
pg 194

Question 14

_______ nozzles have a rotating head spun by water discharged through miniature outlets resembling periphery fog nozzles.

Answer 14

Cellar
pg 195

Question 15

_______ nozzles have a rotating head spun by water discharged through miniature smoothbores that deliver a broken stream. Function at 50psi.

Answer 15

Distributor
pg 195

Question 16

______ nozzles, also called penetrating nozzles, are commonly used in aircraft firefighting, car fires, or to apply water into voids, attics, or other areas inaccessible to standard fire streams.

Answer 16

Piercing
pg 196

Question 17

The _______ nozzle consists of a piece of brass or steel with many small impinging holes.

Answer 17

Chimney
pg 196