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20 questions
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- 1. Multiple-choice30 seconds1 pt
Pascal's principle states that if...
pressure is applied at any point to a liquid in a closed system, that same pressure is felt throughout the system
pressure is applied at any point to any substance in a closed system, that same pressure is felt throughout the system
pressure is applied at any point to air in a closed system, that same pressure is felt throughout the system
pressure is applied at any point to a solid in a closed system, that same pressure is felt throughout the system
- 2. Multiple-choice30 seconds1 pt
Select all of the advantages of hydraulics over other systems
relatively lightweight
efficient
not flammable
minimal maintenance required
fluid is non-corrosive
- 3. Multiple-choice30 seconds1 pt
Vegetable based hydraulic oil is predominantly __________ oil and is made from the __________ _____________ plant
castor , Ricinus communis
schellac , Atropa belladonna
castor , Papaver somniferum
camfer , Coriandrum sativum
camfer , Digitalis purpurea
- 4. Multiple-choice30 seconds1 pt
What colour is mineral based hydraulic oil?
Red
Green
Purple
Blue
- 5. Multiple-choice30 seconds1 pt
A disadvantage of synthetic based hydraulic fluid is it...
attracts moisture
is prone to forming sludge
is unsuitable for higher pressures
it is highly flammable
- 6. Multiple-choice30 seconds1 pt
The purpose of a check valve in a hydraulic system is to...
prevent the reverse flow of fluid
limit the amount of pressure in a system
initiate the movement of actuators in a system
direct hydraulic fluid for system operation
- 7. Multiple-choice30 seconds1 pt
What is the main source of contamination in a hydraulic system?
Pump
Actuators
Check valve
Accumulator
- 8. Multiple-choice30 seconds1 pt
In a pressurised hydraulic system, an unloading valve...
removes pressure from the pump when no service is required
provides a safety release, venting fluid overboard if an overpressure occurs in the system
converts pressure into mechanical energy
allows pressure to flow from a diaphragm type accumulator to a bladder type accumulator
- 9. Multiple-choice30 seconds1 pt
Pneumatic systems...
are not suitable for precise control of moving parts
present an explosion hazard
are heavier than a comparable hydraulic system
cope with moving large or heavy surfaces better than hydraulic systems
- 10. Multiple-choice30 seconds1 pt
Pressures stored in a pneumatic system can be up to...
3000 psi
2000 psi
1000 psi
1500 psi
- 11. Multiple-choice30 seconds1 pt
The purpose of a bonding strip on an aircraft is to...
remove the static charge from an aircraft into the air
to keep all parts of the aircraft at the same charge
earth an aircraft prior to refuelling
prevent the build up of static electricity
- 12. Multiple-choice30 seconds1 pt
On larger aircraft, what is used to detect the formation of ice?
Optical transducer
Flux capacitor
Flux valve
Rheostat
- 13. Multiple-choice30 seconds1 pt
What are the broad types of ice protection systems?
Select all that apply
Mechanical
Fluid
Thermal
Aerodynamic
- 14. Multiple-choice30 seconds1 pt
Deicing boots should be used...
prior to any ice forming on the leading edges to prevent it from forming
only once the ice has reached 5mm in depth
whenever forecast icing conditions are likely to be encountered
only when the ice begins to affect airspeed
- 15. Multiple-choice30 seconds1 pt
De-icing fluid works by...
lowering the freezing point of the ice
raising the freezing point of the ice
stripping the ice from the wings by forming a layer between the wing and the ice build up
dissolving the ice by chemically breaking up the water atom into Hydrogen and Oxygen
- 16. Multiple-choice30 seconds1 pt
Which of these are types of fire detection mechanisms found in aircraft? Select all that apply
bi-metallic switch
thermocouple
capacitance measuring
thermal imaging
- 17. Multiple-choice30 seconds1 pt
A continuous loop fire detection system...
has thermistor material contained within a wire
uses a thermocouple to respond to increased heating in an area
is only used in engines in aircraft due to their complexity
once activated, must be reset by engineers on the ground
- 18. Multiple-choice30 seconds1 pt
The two types of fire extinguishing agents that may be used inside the cabin of an aircraft are...
carbon dioxide
dry powder
Methyl bromide
Halon
Hydroflurocompounds
- 19. Multiple-choice30 seconds1 pt
Which statement best describes an Altitude Adjustable Oxygen system?
It allows the flow of Oxygen to be adjusted by the user
The regulator automatically adjusts the flow of Oxygen depending on the cabin altitude
The system is only used in the passenger cabin of airliners
The system is only used in the cockpit of airliners
- 20. Multiple-choice30 seconds1 pt
What pressure is Oxygen typically stored at in a constant Oxygen flow system?
2200 psi
4400 psi
1100 psi
3300 psi
