FAE (Fire Apparatus Engineer) Illinois Questions And Answers Graded A+

Used primarily on portable pumps where the velocity of exhaust gases passing through a venturi creates a vacuum. Require High engine RPM and is not very efficient. - Exhaust Primers The network of pipes of intermediate size which reinforce the grid within the various loops of the primary feeder system and aid the concentration of the required fire flow at any point. - Secondary Feeders What are all the steps in a Service Test? - 1. 20 minutes: 100% @ 150 psi 2. 10 minutes: 70 % @ 200 psi 3. 10 minutes: 50% @ 250 psi Optional: 100% @ 165 psi (overload or spurt test) What does One cubic foot of water contain in inches? - 1.728 cubic inches What does One cubic foot of water contain in gallons? - 7.5 gallons What does One gallon of water weigh? - 8.35 lbs What does One gallon of water contain in inches? - 231 cubic inches How high will One psi elevate water? - 2.304 feet What is atmospheric pressure at sea level? - 14.7 psi What is the maximum lift for drafting? (Theoretically) - 34 feet How high does One inch (1") mercury (inches in vacuum) lift? - 1.13 feet of liftWhat is the recommended minimum psi that should be maintained on the compound gauge when taking water from a hydrant? - 10 psi What is Static pressure? - Stored or potential energy that is available to force water through pipes and fittings, fire hose, and adapters. What are all the steps in Certification Test (pre-service tests)? - 1. 2 Hour: 100% @ 150 psi 2. 1/2 hour: 70% @ 200 psi 3. 1/2 hour: 50% @ 250 psi 4. 10 minutes: 100% @ 165 psi (overload or spurt test) What does one cubic foot of water weigh? - 62.5 lbs What is a Spurt or Overload test? - 100% @ 165 psi (done in certification test for 10 minutes) What are Pump Tests? - 100% capacity @ 150 psi net pump pressure 70% capacity @ 200 psi net pump pressure 50% capacity @ 250 psi net pump pressure What is Net Engine/Pump Pressure (NEP)? - Net Pump Pressure (NEP) is the measurement of the total work performed by the pump: a. To lift water into the pump (drafting) b. To discharge water from the pump NEP= Suction Side Work(drafting) + Discharge Side Work How do you figure out Suction Side Work ? - Suction Side Work(psi)= Lift (ft)+Intake Hose FL(Friction Loss) (psi) Divided by 2.3 What is Fog nozzle pressure for Hand held nozzle and Master Stream? - 100 psiWhat is Smooth Bore nozzle pressures for Hand held nozzle and Master Stream? - Hand Held : 50 psi Master Stream: 80 psi What is Newton's Third Law of motion pertaining to Nozzle Reaction? - "For every action there is an equal and opposite reaction" What are the two variables that affect the reach of fire streams? - 1. Air Resistance 2. Gravity What angle does a stream get the greatest horizontal reach? - 30-34 degrees What angle does a stream get the maximum effective vertical reach? - 60-75 degrees What percent can head and tail winds affect the reach of a stream? - 10% to 15% What is Q value for the Q formula - Q= GPM divided by 100 Example: 200 GPM=2.00 Q=2 How do you Calculate Elevation? - Add 5 psi for each floor of elevation (exclude 1st floor) Subtract 5 psi for each floor below grade What is the pressure for Standpipe system and siamese? - add 25 psi