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03. 4. ACGA_L01-L09_2017
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Questions in this quiz (24)
11. Which is NOT one of the three main types of hydraulic pumps used in aircrafts?
pg14- Aa. Alternative pumps.
- Bb. Electrically operated pumps.
- Cc. Hand pumps.
- Dd. Engine-driven pumps.
22. Which of the following statemenst is true?
pg14- Aa. Hand pumps are mainly used in the brakes system.
- Bb. Hand pumps have a great volumetric efficiency.
- Cc. Ellectrically operated pumps are mainly used as back-up pumps in transport
aircrafts. - Dd. Electrically operated pumps are used in big planes due to their ability to provide high pressures.
33. About engine-driven pumps:
pg14- Aa. They can provide high pressures.
- Bb. One disadvantage is that they tend to be huge systems.
- Cc. They are not commonly used in aviation.
- Dd. B and C are correct.
44. Hydraulic system: choose the correct statement.
pg14- Aa. Reservoirs are used only in case of emergency.
- Bb. The gas used in accumulators is not compressible.
- Cc. Reservoirs are always pressurized.
- Dd. Acumulators store energy in form of high pressure fluid.
55. Heat exchangers: choose the correct statement.
- Aa. The hydraulic fluid is too cold because of the altitude.
- Bb. Their main use is heatting the hydraulic fluid.
- Cc. A and B are correct.
- Dd. They are usually located at the fuel tanks.
66. The basic hydraulic systems is constituded by:
pg14- Aa. A pump, a selector valve, a reservoir and an actuator.
- Bb. A pump, a reservoir, an actuator and a filter.
- Cc. A pump, an accumulator, a filter and an actuator.
- Dd. A pump, a selector valve and an actuator.
77. Open hydraulic systems: choose the correct statement.
- Aa. In open hydraulic systems valves are parallel connected.
- Bb. In open hydraulic systems the pressure is low during inactive phases.
- Cc. In open hydraulic systems we can act various mechanisms simultaneously.
- Dd. A and C are correct.
88. Hydraulic systems:
pg15- Aa. The PMV provides pressure to two systems in any case.
- Bb. The PTU is used because of his great efficiency.
- Cc. The Pressure Maintining Valve prioritizes certain hydraulic services when there
is not enough pressure. - Dd. The RAM Air Turbine is used in the cruise phase providing cheap energy to the system.
91. By law, which of the following indications must be present inside the cockpit:
pg16- Aa) Indication of the pressure of the wheels.
- Bb) Indication of brake temperature.
- Cc) Indication of position of landing gear.
- Dd) None of these.
102. Which of the following brakes have been used in aviation?
pg16- Aa) Mechanical Drumb Brakes
- Bb) Hydraulic expander brakes
- Cc) Disck brakes
- Dd) All of above
113. What are the main difference between a car ́s brakes and a plane ́s brakes.*
pg16- Aa) The size
- Bb) The types
- Cc) There is no difference.
- Dd) None of these.
124. What was one of the first systems used in aviation to prevent the skid at the wheels?*
pg16- Aa) Hydraulic System
- Bb) Electric System
- Cc) Maxaret Anti-Skid Unit
- Dd) A and B are correct
135. What is one of the Auto Brake System ́s Advantage?
- Aa) It never fails.
- Bb) It maximizes brake efficiency.
- Cc) The Wheels never heats up.
- Dd) The mechanic never has to check the brakes.
146. What type of wheel hubs is mostly used for high pressure?*
pg17- Aa) Well base hub.
- Bb) Detachable Flange
- Cc) Split hub
- Dd) None of above
157. What does the tyre markings H40 x 14,5 ∙ 19 indicate in a tyre
pg17- Aa) External Diameter, Section and minimum temperature.
- Bb) Maximum temperature, Section and Hub diameter respectively.
- Cc) Maximum pressure, Section and Hub diameter respectively.
- Dd) External Diameter, Section and Hub diameter respectively.
168. What is the denomination of structure of tyre with fibers in different directions?
pg 17- Aa) Convetional tyre
- Bb) Radial tyre
- Cc) Tubeless tyre
- Dd) Tube tyre
171. Which 4 Types of flight deck controls can we find in nowadays air vehicles / airplanes?
pg17- AA. Control Column, Control Wheel, Rudder Pedals And Joystick.
- BB. Control Wheel, Rudder Pedals, Joystick And Control Square.
- CC. Rudder Pedals, Control Square, Smartphone And Mental System.
- DD. Control Column, Rudder Pedals, Joystick And Mouse.
182. Which of the following is not an element of a cable operated control system?
pg17- AA. Cables.
- BB. Pulleys.
- CC. Stops.
- DD. Korrys.
193. Choose the correct one.
pg17- AA. Hydraulic power assist systems can be reversible or irreversible.
- BB. A PCU is a set of mechanims that block the control surface movement.
- CC. The redundancy is not a characteristic of a hydraulic power assist system.
- DD. The future in aviation is the hydraulic assistance.
204. How does the Stick Force Gradient Work? Choose the incorrect one.
pg18- AA. The Stick Force Gradient is neccesary because the pilot need to feel the forces that are normal in training.
- BB. The Stick Force cannot be too high or the pilot can get over tired.
- CC. The Stick Force Gradient does not need to return to the neutral position when the pilot sets them free.
- DD. The felt force can be proportional to air dynamic pressure and to flight control displacement.
215. Choose a true advantage of the Electrical Power Assist Systems.
pg18- AA. High cost.
- BB. Easy Manteinance.
- CC. High pressure fluids.
- DD. For big control surfaces.
226. When working with Mechanical Screwjack Actuators, choose the correct one.
- AA. They have a fast response.
- BB. They can handle large aerodynamic loads.
- CC. They are faster than the linear actuators.
- DD. An example of them is a moving tailplane.
237. When working with Linear Actuators, Choose the incorrect one.
pg18- AA. They have a rapid response.
- BB. They can handle reasonably "light" aerodynamic loads.
- CC. An example of them is the flaperon actuator of the Eurofighter Typhoon.
- DD. They are slower than the Mechanical Screwjack Actuators.
248. Characteristics of Cable Operated Flight Control Systems. Choose the incorrect one.
pg19- AA. Pilot must generate all the force to move the control surfaces.
- BB. If control is broken, aerodynamic forces tend to put the control surface in a neutral position.
- CC. They have an electrical linkage.
- DD. Cables must be tensed to avoid free-play effects.
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- AVIÓNICA Quiz on 03. 4. ACGA_L01-L09_2017, created by Ismael Vázquez on 28/03/2018.
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- Ismael Vázquez
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