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Quiz on Semana de Ortega, created by diego silva on 03/04/2018.

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Semana de Ortega

Question 1 of 32

1

Which is not an anti-ice system?

Select one of the following:

  • A. Hot bleed air

  • B. Strong movements of the rudder

  • C. Electrical heating

  • D. Liquid ice protection

Explanation

Question 2 of 32

1

Which are the de-icing types?

Select one of the following:

  • A. Evaporative, wets and cyclic

  • B. Movements and heat

  • C. Evaporative and drys

  • D. Only cyclic

Explanation

Question 3 of 32

1

Who is the last responsible for having the wings free of ice?

Select one of the following:

  • A. Flight engineer

  • B. Pilot in command

  • C. Air hostesses

  • D. De-icing Ground Crew

Explanation

Question 4 of 32

1

Pneumatic de-icing boots are:

Select one of the following:

  • A. A shaped rubber sleeve that conforms to leading edge which is attached.

  • B. A shaped rubber sleeve that is attached to the leading edge of propellers

  • C. Devices which can optimize aerodynamic efficiency

  • D. Devices which its interior is full of glycol

Explanation

Question 5 of 32

1

. Which is the main difference between an anti-ice and a de-ice system?

Select one of the following:

  • A. There is not any difference

  • B. De-ice system does not exist.

  • C. The anti ice system allow ice accretion and when is activated shed the ice or melt the ice, while a de-ice system prevent ice accretion

  • D. The anti-ice prevent ice accretion while the de-ice eliminates the ice

Explanation

Question 6 of 32

1

Which of this statements about the pitot heat is true?

Select one of the following:

  • A. The pitot heat is not an esential system in commercial aviation

  • B. The pitot heat prevents and eliminates the ice accretion does not matter the ambiential conditions

  • C. Pitot heat is usually part of the anti-ice system in the aircraft

  • D. Pitot heat usually consists in a electrical resistor.

Explanation

Question 7 of 32

1

. How many types of de-icing systems exist?

Select one of the following:

  • A. Three: wets, cyclic and regressive.

  • B. Four: evaporate, cyclic, kinetic and regressive.

  • C. Three: evaporative, wets and cyclic.

  • D. Four: wets, cyclic, kinetic and evaporative.

Explanation

Question 8 of 32

1

.Which of the following is a type of windshield de-icing?

Select one of the following:

  • A. Fluid de-icing

  • B. Electrical anti-icing

  • C. Pneumatic System

  • D. All of them are correct

Explanation

Question 9 of 32

1

Advantages of hydraulic system

Select one of the following:

  • A. Ability to obtain large forces

  • B. Force amplification

  • C. Accurate control

  • D. All above are right

Explanation

Question 10 of 32

1

Disadvantages of hydraulic system

Select one of the following:

  • A. Not useful for small forces

  • B. Temperature range limited

  • C. Expensive components

  • D. All above are right

Explanation

Question 11 of 32

1

Definition of hydraulics

Select one of the following:

  • A. Science that studies the equilibrium (Hydrostatic) and dynamics of liquids (Hydrodynamics).

  • B. Science that studies the possibility of using air in systems.

  • C. Science that studies the forces involved when an aircraft flies

  • D. Science that studies how the environment changes when an aircraft flies throughout it.

Explanation

Question 12 of 32

1

The pressure exerted anywhere in a confined incompressible fluid is transmitted equally in all directions throughout the fluid such that the pressure ratio (initial difference) remains the same. This is the definition of:

Select one of the following:

  • A. Newton´s Law

  • B. Pascal´s Law

  • C. Bernouigi´s Law

  • D. Mach´s Law

Explanation

Question 13 of 32

1

The F18´s operating pressure is:

Select one of the following:

  • A. 3000 psi

  • B. 4000 psi

  • C. 2000 psi

  • D. 1450 psi

Explanation

Question 14 of 32

1

Which of the following is not a type of pump?

Select one of the following:

  • A. Hand pump

  • B. Electrically operated pump

  • C. Engine-driven pump

  • D. Stealth pump

Explanation

Question 15 of 32

1

. Choose the wrong answer: functions of hydraulic accumulators

Select one of the following:

  • A. Store energy (high pressure fluid)

  • B. Provide fluid/pressure in case of emergency/failure of pump

  • C. Avoid thermal expansion of the fluid

  • D. Cater for small internal leaks

Explanation

Question 16 of 32

1

RAM Air Turbine

Select one of the following:

  • A. Is the third turbine you can find in a 727 or DC10

  • B. Add extra propulsion to the plane if the main engines fail

  • C. Provides electrical and mechanical power if main resources fail

  • D. Are specially common in jet fighters and not used in civil airliners

Explanation

Question 17 of 32

1

RAM turbines are:

Select one of the following:

  • A. To provide electrical and mechanical power if main sources fail

  • B. Installed inside the engines

  • C. Useless

  • D. A kind of turbine engine

Explanation

Question 18 of 32

1

Seals:

Select one of the following:

  • A. Prevent fluid passing a certain point

  • B. Keep air and dirt out of the system

  • C. Both of the above

  • D. None of the above

Explanation

Question 19 of 32

1

Compared to pneumatic systems:

Select one of the following:

  • A. Hydraulic control is easier as there are no compressibility effects.

  • B. Hydraulic systems work continuously, being noisier.

  • C. Compressors are usually more expensive than pumps.

  • D. All of the above

Explanation

Question 20 of 32

1

. Hydraulic fluids can be:

Select one of the following:

  • A. Vegetable-Based

  • B. Mineral-based

  • C. Synthetic-based

  • D. All of the above

Explanation

Question 21 of 32

1

Electrically operated pumps operate at a pressure of:

Select one of the following:

  • A. 2000 – 4500 psi

  • B. 3050 – 3600 psi

  • C. 1000 – 2850 psi

  • D. 2850 – 3050 psi

Explanation

Question 22 of 32

1

In closed hydraulic systems:

Select one of the following:

  • A. The actuation is slow

  • B. The hydraulic pressure is the nominal one (maximum) all the time

  • C. Only one service can be obtained at a time

  • D. All of the above

Explanation

Question 23 of 32

1

RESERVOIRS

Select one of the following:

  • A. Compensate leaks

  • B. Act as a thermal regulator

  • C. Are used normally and in emergencies

  • D. All of the above are correct

Explanation

Question 24 of 32

1

About temperature

Select one of the following:

  • A. Pneumatics can work at higher temperature.

  • B. Pneumatics can work at lower temperature.

  • C. Hydraulics can work at higher temperature.

  • D. Pneumatics are not affected by temperature.

Explanation

Question 25 of 32

1

Aircraft surfaces must be designed to suffer in flight aerodynamic degradation due to the ice formation

Select one of the following:

  • A. Yes, always.

  • B. Yes, but not during take off.

  • C. No, never.

  • D. Yes, but not during landing.

Explanation

Question 26 of 32

1

Which of the following are windscreen rain removal systems?

Select one of the following:

  • A. Curved and rear-sloping windscreen

  • B. Windshield wipers

  • C. Rain repellent: for torrential rain conditions

  • D. All of the above are correct

Explanation

Question 27 of 32

1

Which of the following are types of ice?

Select one of the following:

  • A. Clear ice

  • B. Rain ice

  • C. Rime ice

  • D. All of the above are correct

Explanation

Question 28 of 32

1

. A safe flight must take also into account possible weather hazards that might be encountered. These can be of different types:

Select one of the following:

  • A. structural (gust, hail impact)

  • B. ice

  • C. lightnings

  • D. All of the above are correct

Explanation

Question 29 of 32

1

. Mixed ice…

Select one of the following:

  • A. Is the Combination of glaze and rime ice

  • B. Can not occur today

  • C. Take place in clouds with temperature transitionfrom small to large supercooled water droplets.

  • D. Options A and C are true

Explanation

Question 30 of 32

1

About Rime ice…

Select one of the following:

  • A. It is a Transparent air free sheet

  • B. We can see in flight in dense clouds of small supercooled water droplets

  • C. It has an opaque white structure due to air trapped between droplets

  • D. It has an opaque white structure due to the viscosity of the types of droplets

Explanation

Question 31 of 32

1

Effects of ice accretion on an aircraft

Select one of the following:

  • A. Weight increases

  • B. Alteration of airfoil shape

  • C. Loss of control due to freeze in the joints between control surfacesand wings / tailplanes

  • D. All of the above are correct

Explanation

Question 32 of 32

1

About frost/Hoar frost…

Select one of the following:

  • A. Ice crystals from sublimation when water vapour freezes

  • B. Ice crystals from condensation when water vapour freezes

  • C. Black crystaline structure

  • D. It does form a heavy blanket but roughens the surface increaseaerodynamic performances

Explanation

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