Pumping Apparatus Driver/Operator Chapter 6

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Questions and Answers

What influences the fire stream until it reaches its destination?

Wind direction, water color, nozzle shape, and hose material
Nozzle size, hose length, water temperature, and water density
Velocity, gravity, wind, and friction with the air (correct)
Temperature, humidity, nozzle material, and water pressure

At what pressure should solid stream nozzles on handlines be operated?

70 psi
30 psi
50 psi (correct)
90 psi

What affects the reach of a fog stream?

Velocity, nozzle size, water density, and wind direction
Nozzle shape, nozzle pressure, gravity, and air resistance
Width, water particle size, wind, and water flow volume (correct)
Nozzle color, water temperature, humidity, and hose material

What is a characteristic of a constant flow nozzle?

It is designed to flow a specific volume of water on all stream patterns at a specific nozzle discharge pressure. (B) Signup and view all the answers

What happens if the driver does not supply a selectable gallonage nozzle with the proper pressure?

The handline will not achieve the selected gallonage at the nozzle. (C) Signup and view all the answers

What is a characteristic of automatic fog nozzles?

They are a type of variable flow nozzle with the ability to change patterns while maintaining the same nozzle pressure. (A) Signup and view all the answers

What is the maximum flow for high pressure fog nozzles?

8-15 gpm (B) Signup and view all the answers

At what pressure do smooth bore master stream nozzles operate?

80 psi (D) Signup and view all the answers

When are master stream appliances generally operated?

During incidents where handlines would be ineffective (B) Signup and view all the answers

What is the maximum pressure at which high pressure fog nozzles operate?

800 psi (A) Signup and view all the answers

What is the maximum flow for handlines?

350 GPMs (B) Signup and view all the answers

What type of fires are high pressure fog nozzles best suited for?

Wildland fires (B) Signup and view all the answers

What is the flow range of chimney nozzles at 100 psi?

1.5 to 3 gpm (D) Signup and view all the answers

What type of master stream appliance is permanently attached to an aerial ladder or platform?

Elevated master stream (D) Signup and view all the answers

What is the capacity of piercing nozzles at 100 psi?

125 gpm (A) Signup and view all the answers

What is the distinguishing feature of combination monitors?

They may be used in a mount on the apparatus or removed and used remotely (C) Signup and view all the answers

What type of master stream appliance is permanently mounted on the apparatus?

Fixed monitors (C) Signup and view all the answers

What is the effect of water when it is discharged from a nozzle at a given pressure?

Nozzle reaction (B) Signup and view all the answers

Flashcards

What affects a fire stream?

Velocity, gravity, wind, and friction with the air.

Solid stream nozzle pressure?

50 psi