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FAE (Fire Apparatus Engineer) Questions with Detailed
Verified Answers
62.5 lbs Ans: ✓ ✓ ✓ What does one cubic foot of water weigh?
1.728 cubic inches Ans: ✓ ✓ ✓ What does One cubic foot of water contain in inches?
7.5 gallons Ans: ✓ ✓ ✓ What does One cubic foot of water contain in gallons?
8.35 lbs Ans: ✓ ✓ ✓ What does One gallon of water weigh?
231 cubic inches Ans: ✓ ✓ ✓ What does One gallon of water contain in inches?
.434 psi Ans: ✓ ✓ ✓ What is One foot of water exert as a back pressure?
2.304 feet Ans: ✓ ✓ ✓ How high will One psi elevate water?
14.7 psi Ans: ✓ ✓ ✓ What is atmospheric pressure at sea level?
34 feet Ans: ✓ ✓ ✓ What is the maximum lift for drafting? (Theoretically)
1.13 feet of lift Ans: ✓ ✓ ✓ How high does One inch (1") mercury (inches in vacuum) lift?
10 psi Ans: ✓ ✓ ✓ What is the recommended minimum psi that should be maintained on the
compound gauge when taking water from a hydrant?
Stored or potential energy that is available to force water through pipes and fittings, fire hose, and
adapters. Ans: ✓ ✓ ✓ What is Static pressure?
That part of the total pressure that is not used to overcome friction or gravity while forcing water
through fire hose, pipe, fittings, and adapters. Ans: ✓ ✓ ✓ Residual Pressure
Take Static pressure and subtracting residual pressure which gets you your drop. Take your drop and
multiply it by (2)² for second line, (3)² for third line, (4)² for forth line, (5)² for fifth line. so long as
after you multiply drop and the multiplayer for the number line and still have 10 psi left based off
static pressure you can have that many lines if you have less than 10 psi you can not operate that
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number of lines. Ans: ✓ ✓ ✓ How to calculate psi loss for each additional line off hydrant and
know how many lines can be taken off hydrant?
Example: Static pressure: 65 psi Residual pressure : 60 psi
Drop: 5 psi
2nd line: 2²=4: 4x5= 20
3rd line: 3²=9: 9x5= 45
4th line: 4²=16: 16x5= 80 This line can't be done because it is over 65 psi Ans: ✓ ✓ ✓ Examples of
how to calculate psi loss for each additional line off hydrant
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) Ans: ✓ ✓ ✓ What are all the steps in
Certification Test (pre-service tests)?
100% @ 165 psi (done in certification test for 10 minutes) Ans: ✓ ✓ ✓ What is a Spurt or Overload
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) Ans: ✓ ✓ ✓ What are all the steps in a Service
Test?
100% capacity @ 150 psi net pump pressure
70% capacity @ 200 psi net pump pressure
50% capacity @ 250 psi net pump pressure Ans: ✓ ✓ ✓ What are Pump Tests?
Net Pump Pressure (NEP) is the measurement of the total work performed by the pump:
a. To lift water into the pump (drafting)
© Get it right 2025 Getaway - Stuvia US All rights reserved
FAE (Fire Apparatus Engineer) Questions with Detailed
Verified Answers
62.5 lbs Ans: ✓ ✓ ✓ What does one cubic foot of water weigh?
1.728 cubic inches Ans: ✓ ✓ ✓ What does One cubic foot of water contain in inches?
7.5 gallons Ans: ✓ ✓ ✓ What does One cubic foot of water contain in gallons?
8.35 lbs Ans: ✓ ✓ ✓ What does One gallon of water weigh?
231 cubic inches Ans: ✓ ✓ ✓ What does One gallon of water contain in inches?
.434 psi Ans: ✓ ✓ ✓ What is One foot of water exert as a back pressure?
2.304 feet Ans: ✓ ✓ ✓ How high will One psi elevate water?
14.7 psi Ans: ✓ ✓ ✓ What is atmospheric pressure at sea level?
34 feet Ans: ✓ ✓ ✓ What is the maximum lift for drafting? (Theoretically)
1.13 feet of lift Ans: ✓ ✓ ✓ How high does One inch (1") mercury (inches in vacuum) lift?
10 psi Ans: ✓ ✓ ✓ What is the recommended minimum psi that should be maintained on the
compound gauge when taking water from a hydrant?
Stored or potential energy that is available to force water through pipes and fittings, fire hose, and
adapters. Ans: ✓ ✓ ✓ What is Static pressure?
That part of the total pressure that is not used to overcome friction or gravity while forcing water
through fire hose, pipe, fittings, and adapters. Ans: ✓ ✓ ✓ Residual Pressure
Take Static pressure and subtracting residual pressure which gets you your drop. Take your drop and
multiply it by (2)² for second line, (3)² for third line, (4)² for forth line, (5)² for fifth line. so long as
after you multiply drop and the multiplayer for the number line and still have 10 psi left based off
static pressure you can have that many lines if you have less than 10 psi you can not operate that
© Get it right 2025 Getaway - Stuvia US All rights reserved
, Click here for more: Scholars nexus
number of lines. Ans: ✓ ✓ ✓ How to calculate psi loss for each additional line off hydrant and
know how many lines can be taken off hydrant?
Example: Static pressure: 65 psi Residual pressure : 60 psi
Drop: 5 psi
2nd line: 2²=4: 4x5= 20
3rd line: 3²=9: 9x5= 45
4th line: 4²=16: 16x5= 80 This line can't be done because it is over 65 psi Ans: ✓ ✓ ✓ Examples of
how to calculate psi loss for each additional line off hydrant
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) Ans: ✓ ✓ ✓ What are all the steps in
Certification Test (pre-service tests)?
100% @ 165 psi (done in certification test for 10 minutes) Ans: ✓ ✓ ✓ What is a Spurt or Overload
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) Ans: ✓ ✓ ✓ What are all the steps in a Service
Test?
100% capacity @ 150 psi net pump pressure
70% capacity @ 200 psi net pump pressure
50% capacity @ 250 psi net pump pressure Ans: ✓ ✓ ✓ What are Pump Tests?
Net Pump Pressure (NEP) is the measurement of the total work performed by the pump:
a. To lift water into the pump (drafting)
© Get it right 2025 Getaway - Stuvia US All rights reserved
