Question Number. 1. A fuel crossfeed
valve is usually in.
Option A. the
closed position.
Option B. the
open position.
Option C. its
last position.
Correct Answer is. the closed position.
Explanation. Fuel crossfeed valves must be closed for flight.
Question Number. 2. Sliding couplings
in fuel systems are used on.
Option A. low
pressure systems.
Option B. high
pressure systems.
Option C. air
or vapour systems.
Correct Answer is. air or vapour systems.
Explanation. CAIPs AL/3-17 5.8.3.
Question Number. 3. A fuel
cross-feed valve is lubricated.
Option A. by
internal cooling.
Option B. by
air.
Option C. by
the fuel.
Correct Answer is. by the fuel.
Explanation. NIL.
Question Number. 4. Fuel cross feed
valves are operated by the.
Option A. 28
V DC bus.
Option B. 115
V AC.
Option C. battery.
Correct Answer is. 28 V DC bus.
Explanation. 737 MM 28-22-00 Page 1, A320 FCOM 28.30 pg1.
Question Number. 5. Fuel systems
that are interconnected must have.
Option A. separate
venting for each tank.
Option B. no
airspace.
Option C. air
spaces interconnected.
Correct Answer is. air spaces interconnected.
Explanation. CAIPs AL/3-17.
Question Number. 6. As fuel level
increases, system capacitance.
Option A. decreases.
Option B. no
change.
Option C. increases.
Correct Answer is. increases.
Explanation. The dielectric constant of kerosene is more than that of air. B757
MM Chapter 28-41-00.
Question Number. 7. When
refuelling.
Option A. the
fuel nozzle will automatically cut off the supply when the tank is full.
Option B. it
is important not to fill the expansion space in the tank.
Option C. it
is important to fill the expansion space in the tank.
Correct Answer is. it is important not to fill the expansion space in the tank.
Explanation. Jeppesen A&P Technician Airframe Textbook Page 15-18.
Question Number. 8. When using
Biopor microbial fuel growth treatment.
Option A. it
is added to the fuel and burnt.
Option B. it
is applied dry and left.
Option C. it
is applied wet and flushed out.
Correct Answer is. it is added to the fuel and burnt.
Explanation. Jeppesen Aircraft Gas Turbine Powerplants 7-3.
Question Number. 9. Microbial
growth is.
Option A. red
dots.
Option B. brown
black slime.
Option C. green
sludge.
Correct Answer is. brown black slime.
Explanation. Jeppesen A&P Technician Airframe Textbook Page 15-38.
Question Number. 10. Bladder type
fuel tanks are secured by.
Option A. bolts.
Option B. contact
adhesive.
Option C. press
type rivets.
Correct Answer is. press type rivets.
Explanation. AL/3-15 4.1.3 says press studs or cords.
Question Number. 11. A zero fuel test
on a fuel quantity indicating system is carried out with.
Option A. tanks
completely full.
Option B. tanks
completely empty.
Option C. tanks
empty apart from unusable fuel.
Correct Answer is. tanks empty apart from unusable fuel.
Explanation. AL/10-3 11.14.1.e.
Question Number. 12. After a tank bag
has been replaced, a fuel flow test should be carried out at.
Option A. tank
outlet.
Option B. engine
inlet.
Option C. tank
shut-off valve point.
Correct Answer is. engine inlet.
Explanation. NIL.
Question Number. 13. In biologically
contaminated fuel, corrosion takes place.
Option A. below
the fungal colonies.
Option B. the
top of the tank.
Option C. the
bottom 2 inches of the tank.
Correct Answer is. below the fungal colonies.
Explanation. AL/3-15 para 8.3.
Question Number. 14. If an aircraft
has ability to transfer fuel in flight, provision must be made to.
Option A. shut
off fuel before structural damage.
Option B. provide
overflow facility to dump fuel.
Option C. stop
engine from using tank during transfer.
Correct Answer is. shut off fuel before structural damage.
Explanation. JAR 25.957.
Question Number. 15. In a fuel system
with interconnected vents.
Option A. an
expansion space is not required.
Option B. the
expansion space must be 2% of the tank capacity.
Option C. the
expansion space must be 10% of the tank capacity.
Correct Answer is. the expansion space must be 2% of the tank capacity.
Explanation. JAR 25.969.
Question Number. 16. Fuel tanks
interconnected must have.
Option A. vents
to allow overfueling.
Option B. protection
against overfill for tanks and fuel system.
Option C. tank
where fuel is fed from both tanks to engine inlet.
Correct Answer is. protection against overfill for tanks and fuel system.
Explanation. JAR 25.969.
Question Number. 17. When a FADEC
system loses air data input it goes to.
Option A. soft
reversion.
Option B. hard
reversion.
Option C. mechanical
reversion.
Correct Answer is. soft reversion.
Explanation. TTS FADEC Booklet Page 13.
Question Number. 18. Pressure
refuelling is carried out at.
Option A. 20 PSI.
Option B. 40 PSI.
Option C. 15
PSI.
Correct Answer is. 40 PSI.
Explanation. AL/3-17 5.4 says 'up to 50 psi'.
Question Number. 19. Cross feed
valves permit fuel transfer from.
Option A. tank
to tank.
Option B. left
tank to right tank.
Option C. any
tank to any engine.
Correct Answer is. any tank to any engine.
Explanation. B737 MM 28-22-00 Page 1.
Question Number. 20. What is fitted to the fuel jettison pipe
to prevent vaporisation?.
Option A. An
anti-corona device.
Option B. A
corona device.
Option C. A
nozzle.
Correct Answer is. An anti-corona device.
Explanation. NIL.
Question Number. 21. What happens to
the capacitance in a fuel contents gauge as fuel is used?.
Option A. Depends
on altitude.
Option B. Increases.
Option C. Decreases.
Correct Answer is. Decreases.
Explanation. Aircraft Electricity and Electronics Eismin Page 353.
Question Number. 22. When an aircraft
is put into storage for medium / long periods, the fuel tanks should.
Option A. have
some fuel left in to prevent sealant from deteriorating/drying out.
Option B. be
full.
Option C. be
empty.
Correct Answer is. have some fuel left in to prevent sealant from
deteriorating/drying out.
Explanation. AL/3-15 9.3.
Question Number. 23. Integral fuel
booster pumps.
Option A. require
ram air cooling.
Option B. lets
the fuel do cooling.
Option C. require
no cooling.
Correct Answer is. lets the fuel do cooling.
Explanation. NIL.
Question Number. 24. The purpose of a
scavenge system within a fuel system is.
Option A. to
ensure that all unused fuel is returned to the tanks efficiently.
Option B. to
ensure that all available fuel can be used.
Option C. to
ensure that any water in the fuel is constantly dispersed thus reducing
microbiological contamination.
Correct Answer is. to ensure that any water in the fuel is constantly dispersed
thus reducing microbiological contamination.
Explanation. Transport Category Aircraft Systems Page 6.17.
Question Number. 25. In a light fixed
wing aircraft, the fuel warning light indicates.
Option A. pump
failure.
Option B. the
tank does not pressurise.
Option C. ice
blockage, filter popped or pump fail.
Correct Answer is. ice blockage, filter popped or pump fail.
Explanation. NIL.
Question Number. 26. How is fuel
supplied to a turbine engine?.
Option A. By
a fuel boost pump.
Option B. By
suction from the engine driven fuel pump.
Option C. By
a gravity feed pump.
Correct Answer is. By a fuel boost pump.
Explanation. NIL.
Question Number. 27. A fuel tank
suction valve will open when.
Option A. the
booster pump fails.
Option B. both
the engine driven and booster pump fail.
Option C. the
engine driven pump fails.
Correct Answer is. the booster pump fails.
Explanation. NIL.
Question Number. 28. To prevent water
condensation in a fuel tank.
Option A. the
tank should be filled as full as possible.
Option B. the
tank should be filled with the minimum fuel possible.
Option C. the
filler cap should be left open.
Correct Answer is. the tank should be filled as full as possible.
Explanation. NIL.
Question Number. 29. To protect the
centre tank fuselage area from a vapour build up.
Option A. ram
air is circulated around the tank.
Option B. a
shroud vent and overboard drain is fitted.
Option C. cabin
air is bled around the tank.
Correct Answer is. cabin air is bled around the tank.
Explanation. NIL.
Question Number. 30. When a fuel
jettison valve is in transit, the magnetic indicator would show.
Option A. amber
and in line.
Option B. amber
and cross line.
Option C. green
and in line.
Correct Answer is. amber and cross line.
Explanation. NIL.
Question Number. 31. When considering
the basic categories of fuel tank construction, which of the following is most
prone to leaks?.
Option A. Rigid.
Option B. Integral.
Option C. Flexible.
Correct Answer is. Integral.
Explanation. NIL.
Question Number. 32. On removal of a
fuel tank booster pump, fuel is observed running out of the boost pump
canister, this could be caused by.
Option A. the
pressure outlet check valve is not correctly seated.
Option B. fuel
draining out of the pressure switch bleed.
Option C. fuel
leaking past the inlet screens.
Correct Answer is. the pressure outlet check valve is not correctly seated.
Explanation. NIL.
Question Number. 33. Crossfeed valves
are normally fitted with.
Option A. two
28V DC motors.
Option B. two
three-phase AC motors.
Option C. two
single phase AC motors.
Correct Answer is. two 28V DC motors.
Explanation. NIL.
Question Number. 34. A shroud vent
and overload drain would normally be found on.
Option A. fuel
tank vent pipes.
Option B. fuel
jettison system.
Option C. the
APU fuel feed.
Correct Answer is. fuel tank vent pipes.
Explanation. NIL.
Question Number. 35. To shut-off the
LP fuel supply to the engine for the purpose of engine removal you would.
Option A. close
the cross bleed valve.
Option B. close
the HP fuel lock.
Option C. pull
the fire handle.
Correct Answer is. pull the fire handle.
Explanation. After first pulling teh firebottle CBs.
Question Number. 36. A leak from a
fuel tank which manifests as fuel dripping from the tank is classified as a.
Option A. stain.
Option B. seep.
Option C. run.
Correct Answer is. run.
Explanation. AL/3-15 page 8
para 5.4.1.
Question Number. 37. Calcium Chromate tablets can be fitted in
integral tanks. Before installation the linen bag should be wetted with.
Option A. Water.
Option B. Methylated
Spirit.
Option C. Kerosene.
Correct Answer is. Water.
Explanation. NIL.
Question Number. 38. A check valve is
fitted to a fuel jettison system to.
Option A. prevent
the centre from being defuelled.
Option B. prevent
the dumping of the outer tanks.
Option C. automatically
stop the fuel jettison operation after a period of time.
Correct Answer is. prevent the dumping of the outer tanks.
Explanation. NIL.
Question Number. 39. The advantages
of integral fuel tanks are that they.
Option A. are
cheaper to manufacture, more durable and
easier to maintain.
Option B. use
the maximum volume for fuel and have the minimum amount of weight.
Option C. are
easier to design and construct and use the maximum volume of fuel.
Correct Answer is. use the maximum volume for fuel and have the minimum amount of
weight.
Explanation. NIL.
Question Number. 40. On Large
transport aircraft fuel is delivered to each engine using.
Option A. a
parallel system.
Option B. the
same system for each engine.
Option C. a
separate system for each engine.
Correct Answer is. the same system for each engine.
Explanation. "This question can be interpreted an many ways, and all three
answers arguably correct.
However, based upon the fact that the fuel system can feed any engine
from any tank, we have interpreted it as
'every engine is fed from the same system'."
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