IFSTA DRIVER OPERATOR TEST

IFSTA DRIVER OPERATOR TEST

QUESTIONS WITH 100% CORRECT

ANSWERS LATEST UPDATE .

◉ What is normal operating pressure. Answer: pressure found in system

during periods of normal consumption demands

◉ What is residual pressure. Answer: it is the portion of total available

water that is not used to overcome friction loss or gravity while forcing water through a pipe

◉ What is flow pressure. Answer: the forward velocity of water that is

flowing from an opening

◉ What is elevation pressure. Answer: losses or gains of pressure due to

gravity. this is in relation to the pump and where the nozzle sits.

◉ Causes of friction loss. Answer: lining of fire hose, couplings, kinks,

change in hose size or adapters, improper gasket size, movement of water molecules against each other

◉ How much greater can friction loss be in older hose compared to modern

hose. Answer: 50 percent

◉ How to reduce friction loss. Answer: reduce length, diameter and get rid

of kinks

• / 2

◉ What is water hammer. Answer: damaging force created by the rapid

deceleration of water.

◉ Means of moving water in a municiple system. Answer: pump, gravity,

combination

◉ Three types of basic streams. Answer: Solid, fog, broken stream

◉ According to IFSTA what is the maximum gpm for a handline. Answer:

350 GPM

◉ According to IFSTA how many gpm make master stream nozzles.

Answer: anything that is greater than 350 GPM

◉ What is the difference between smooth bore nozzle pressure for

handlines and master streams. Answer: handlines 50 PSI and master

stream is 80 PSI

◉ Why are master stream nozzles used on the fire ground. Answer:

handlines would be ineffective, conditions require a defensive posture, personal are limited

◉ Types of master stream appliances. Answer: fixed monitors, combination

monitors, portable monitors

◉ How is nozzle reaction defined. Answer: counterforce directed against a

person coming from the velocity of the water bring discharged by nozzle.

◉ When do you account for friction loss with appliances. Answer: anything

flowing greater than 350GPM

• / 2