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WFSM - Set B (Volume 3) Questions and
Correct Answers/ Latest Update / Already
Graded
What are the positions of the pump control switch?
A.) HAND/OFF
B.) HAND/AUTO
C.) HAND/OFF/AUTO
D.) HAND/OFF/MANUAL
Ans: C.) HAND/OFF/AUTO
The graphic display on the type 3 pump control panel is a single line
A.) diagram of the electrical wiring
B.) diagram of the pump control system
C.) mechanical diagram of the type 2 system
D.) mechanical diagram of the type 3 system
Ans: D.) mechanical diagram of the type 3 system
Most emergency service calls involve
A.) electrical shorts
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B.) no fuel delivery
C.) minor leaks
D.) jammed valves
Ans: B.) no fuel delivery
The pump is running, but no fuel is delivered. What is your first step in
diagnosing the problem
A.) check the pump
B.) check all valves
C.) review the as-built drawing
D.) check the fuel storage tank
Ans: C.) Review the as-built drawing
In the modified Panera system, how many tanks are used for defueling
aircraft?
A.) 1
B.) 3
C.) 5
D.) 7
Ans: A.) 1
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The u bend in the panel hydrant system pit defuel line
A.) allows the line to expand
B.) absorbs the hydronic shock
C.) keeps a portion of the Line and meter from draining
D.) provides a place for priming the pump
Ans: C.) keeps a portion of the line and meter from draining
How many hydrant outlets are served by each Panero pit?
A.) 1
B.) 2
C.) 3
D.) 4
Ans: A.) 1
When operating normally what part of the 302AF fueling/defueling
valve restricts the flow of fuel in the control tubing and will not close
A.) ejector strainer
B.) control valve flow control
C.) pressure relief control (CRL)
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D.) pressure reducing control (CRD)
Ans: D.) Pressure reducing control (CRD)
Which component closes the main valve of the 302AF
refueling/defueling valve when there is excess flow at the hydrant
outlet?
A.) Pressure-reducing control (CRD)
B.) Pressure-differential shutoff (CDHS-3)
C.) Loading pressure-relief control (CRL)
D.) Control valve (CV) flow control
Ans: B.) pressure differential shutoff (CDHS-3)
When the CDHS-3 on the 302AF fueling and defueling valve trips
pressure in the common supply line travels through the solenoid and
goes
A.) directly to the refueling section of the valve
B.) directly to the diaphragm chamber of the auxiliary Hytrol valve
C.) through the CDHS-3 to the refueling section if the valve
D.) through the CDHS-3 to the auxiliary hytrol cover chamber valve
Ans: D.) through the CDHS-3 to the auxiliary hytrol cover
chamber valve
All rights reserved © 2025/ 2026 |
WFSM - Set B (Volume 3) Questions and
Correct Answers/ Latest Update / Already
Graded
What are the positions of the pump control switch?
A.) HAND/OFF
B.) HAND/AUTO
C.) HAND/OFF/AUTO
D.) HAND/OFF/MANUAL
Ans: C.) HAND/OFF/AUTO
The graphic display on the type 3 pump control panel is a single line
A.) diagram of the electrical wiring
B.) diagram of the pump control system
C.) mechanical diagram of the type 2 system
D.) mechanical diagram of the type 3 system
Ans: D.) mechanical diagram of the type 3 system
Most emergency service calls involve
A.) electrical shorts
All rights reserved © 2025/ 2026 |
, Page |2
B.) no fuel delivery
C.) minor leaks
D.) jammed valves
Ans: B.) no fuel delivery
The pump is running, but no fuel is delivered. What is your first step in
diagnosing the problem
A.) check the pump
B.) check all valves
C.) review the as-built drawing
D.) check the fuel storage tank
Ans: C.) Review the as-built drawing
In the modified Panera system, how many tanks are used for defueling
aircraft?
A.) 1
B.) 3
C.) 5
D.) 7
Ans: A.) 1
All rights reserved © 2025/ 2026 |
, Page |3
The u bend in the panel hydrant system pit defuel line
A.) allows the line to expand
B.) absorbs the hydronic shock
C.) keeps a portion of the Line and meter from draining
D.) provides a place for priming the pump
Ans: C.) keeps a portion of the line and meter from draining
How many hydrant outlets are served by each Panero pit?
A.) 1
B.) 2
C.) 3
D.) 4
Ans: A.) 1
When operating normally what part of the 302AF fueling/defueling
valve restricts the flow of fuel in the control tubing and will not close
A.) ejector strainer
B.) control valve flow control
C.) pressure relief control (CRL)
All rights reserved © 2025/ 2026 |
, Page |4
D.) pressure reducing control (CRD)
Ans: D.) Pressure reducing control (CRD)
Which component closes the main valve of the 302AF
refueling/defueling valve when there is excess flow at the hydrant
outlet?
A.) Pressure-reducing control (CRD)
B.) Pressure-differential shutoff (CDHS-3)
C.) Loading pressure-relief control (CRL)
D.) Control valve (CV) flow control
Ans: B.) pressure differential shutoff (CDHS-3)
When the CDHS-3 on the 302AF fueling and defueling valve trips
pressure in the common supply line travels through the solenoid and
goes
A.) directly to the refueling section of the valve
B.) directly to the diaphragm chamber of the auxiliary Hytrol valve
C.) through the CDHS-3 to the refueling section if the valve
D.) through the CDHS-3 to the auxiliary hytrol cover chamber valve
Ans: D.) through the CDHS-3 to the auxiliary hytrol cover
chamber valve
All rights reserved © 2025/ 2026 |
