State Exam Study Guide Flashcards
Preparing for exam
What is the GPM for a floating pump?
500GPM.
A Vernier is ___________ .
A graduating scale on a measuring instrument.
A spring pilot valve is a ________ .
Relief valve.
The angle from the bottom of the tires to the underside of the truck midway between the axels is called ____________ .
Ramp breakover angle.
“Lift” is ___________ .
The difference in elevation between the surface of the static water supply and the center of the pump intake.
For every 1000 feet of altitude, the atmospheric pressure decreases by approximately _______ .
0.5 psi
Theoretical Lift
Scientific height that a column of water my be lifted in a true vacuum. At sea level the height is 33.9 feet. *This is NOT attainable by a fire department pumper.
Maximum Lift
The greatest height a fire department pumper could actually lift water (depending on condition of pump, hoses, etc) - approximately 25 feet.
What is the gauge for measuring electric current flow being drawn from and provided to the vehicles battery?
Ammeter
What is the gauge for measuring existing voltage in an electrical system?
Voltmeter
All gauges used for service testing must be calibrated within how many days of testing?
60
Portable tank operations - once the first tender delivers its water _________________________ .
The dump site pumper begins to draft.
The end of a charged hoseline that is flowing water without a nozzle or valve to control the flow of water is called ___________ .
Open Butt
Intermediate partial bulkhead that reduces the surge effect in a partially loaded liquid tank is called ___________ .
Baffle
What type of foam is used in a CAF system?
Class A
Height a column of water may be lifted in sufficient quantity to provide a reliable fire flow is ___________ .
Dependable Lift - usually considered to be 14.7 feet
As lift is increased by 5 feet, pump may only be able to deliver about ________ % of its capacity.
70
As lift is increased by 10 feet, pump may only be able to deliver about _____ % of its capacity.
60
All fire department pumping apparatus are rated when drafting with a minimum lift of _______ feet from the center of a pump intake to the surface of the water through ______ feet of hard intake hose.
10, 20
Intake pressure correction takes into account Lift + _________ .
Total Intake Hose Friction Loss
Auxiliary brake systems include ____________ .
Electromagnetic retarder, Transmission output retarder, Engine compression brake, Exhaust brake
Two types of skids are _______________ .
Acceleration skid and locked wheel skid
Available water Percentage Method:
If the percent is 0-10 then 3x current flow; 11-15 is 2x, 16-25 is same amount that is currently flowing and over 25% drop, water might be available, but not as much as is currently flowing.
Electric Power Generators:
Inverter 1500, portable generators 5000, vehicle mounted generators 12,000 and rescue/specialty vehicle 50,000 watts.
