Ch 6

Question 1

High pressure nozzles are best suited for wild land fires and are not recommended for structural fire fighting due to their low water flow of only ___ to ___ gpm?

Answer 1

8 to 15 gpm

Question 2

Operating at a pressure of up to 800psi ,_______ produce a stream with significant forward velocity but relatively low volume of water delivery?

Answer 2

High pressure fog nozzles

Question 3

Straight stream narrow angle is __?
While wide angle is ___?

Answer 3

Narrow angle =30 Degrees
Wilde angle = 60 degrees 

Question 4

Impinging stream nozzles most often provide a ______ pattern ?

Answer 4

Wide angle fog pattern

Question 5

What nozzle flows only 1.5 to 3 gpm at a nozzle pressure of 100psi?

Answer 5

Chimney nozzle

Question 6

Piercing nozzles are capable of flowing approximately ____gpm at ___ psi?

Answer 6

125 gpm
100 psi

Question 7

Wide fog nozzle pattern is ___ to ___ degrees?

Answer 7

45 to 80 degrees

Question 8

Narrow fog nozzle pattern is __ to __ degrees ?

Answer 8

15 to 45 degrees

Question 9

Until it reaches its destination, the fire stream is influenced by _______,_______, ________ and friction with the air?

Answer 9

Velocity
Gravity
Wind

Question 10

______________ nozzles break water into fine , evenly divided particles by driving several jets of water together at an angle?

Answer 10

Impinging stream nozzles

Question 11

The reach of the _______ is directly related to its width , the size of the water particles (droplets) the wind and the volume of water flowing?

Answer 11

Fog stream

Question 12

A ____________ nozzle is designed to flow a specific volume of water on all stream patterns at a specified nozzle discharge pressure ?

Answer 12

Constant flow nozzle

Question 13

______ nozzles are a type of variable flow nozzle with the ability to change patterns while maintaining the same nozzle pressure?

Answer 13

Automatic nozzles

Question 14

Operating at a pressure of up to 800 psi , ________________ nozzles produce a stream with significant forward velocity , but relatively low volume of water delivery?

Answer 14

High pressure nozzles

Question 15

An _______________ may be pre plumbed and permanently attached to an aerial ladder , platform or other aerial device?

Answer 15

Elevated master stream

Question 16

At the opposite end of the nozzle a striking surface allows the device to be driven with a sledgehammer or _________ through various obstructions?

Answer 16

Maul axe

Question 17

This device consists of a solid piece of brass or steel with many small impinging holes flowing only 1.5 to 3 gpm at a nozzle pressure of 100 psi?

Answer 17

Chimney nozzle