Quiz by Ismael Vázquez, created more than 1 year ago

Tema 12. Clase 12 Abril. 1 hora

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98. SEMANAS 2018.

98. SEMANAS 2018.

Question 1 of 28

1

FADEC means:

Select one of the following:

Full authority digital engine control
Full authority duplex engine control
Forward authority duplex control
None of the above

Explanation

Question 2 of 28

1

Regarding gearboxes and drives, which of the following ones is not one of them?

Select one of the following:

Internal gearbox
Intermediate gearbox
Main gearbox
Radial driveshaft

Explanation

Question 3 of 28

1

Lubrication system functions, which of the following ones is not true?

Select one of the following:

Provide cooling for the bearings
Protect the lubricated components
Maintain it´s properties under extremely cold temperatures
Collect foreign matter

Explanation

Question 4 of 28

1

In the oil system, it´s basic components are:

Select one of the following:

A. Oil tank, oil pumps
B. Heat exchanger, magnetic chip detector
C. A, B and air separator
D. C but without magnetic chip detector

Explanation

Question 5 of 28

1

Regarding air starting system

Select one of the following:

It is not used in commercial aviation anymore
It is high-tech and thus very expensive
The starter motor contains a turbine
All engines use a starter motor, but they can use another starting system if the pilot in command decides so

Explanation

Question 6 of 28

1

About ignition

Select one of the following:

Low energy ignition is used for starting all jets
Hig energy ignition is used for starting all jets
Low energy ignition is used in planes with MTOW<5700 kg and high energy ignition is used in heavier planes
Low energy ignition is used in planes commercial and high energy ignition is used in fighter planes

Explanation

Question 7 of 28

1

Regarding the ice protection system, mark out the incorrect one

Select one of the following:

Must avoid air restrictions due to ice
Turbojet engines use hot air supply
There is also a electrical power system
It can never happen a combination of them because of the amount of energy required to maintain them while flying

Explanation

Question 8 of 28

1

Fire protection systems

Select one of the following:

Never use external air cooling because the oxygen in the air could rekindle the fire
Use fire resistant materials in structural elements but not on pipes
Locate the fuel pipes in cold zones separated by fireproof bulkheads
Locate the fuel pipes in hot zones and protect them with fireproof bulkhead

Explanation

Question 9 of 28

1

Q1. Choose the correct answer:

Select one of the following:

A. Aviation fuels are obtain by fractional distillation of crude oil
B. Aviation fuels are obtain by solidification of crude oil
C. Aviation gasoline and kerosene are light distillates
D. A and C are correct

Explanation

Question 10 of 28

1

Q2. Detonation can be caused by:

Select one of the following:

A. An incorrect mixture strength
B. An incorrect fuel grade
C. A combination of high pressure and temperature
D. All are correct

Explanation

Question 11 of 28

1

Q3. Aviation Gasoline can be classified in:

Select one of the following:

A. Grade 80 (red)
B. Grade 90 (green)
C. Grade 100 ZZ (blue)
D. A and B are correct

Explanation

Question 12 of 28

1

Q4. Related to rich mixtures, choose the incorrect answer:

Select one of the following:

A. From 18:1 to 15:1
B. Leads to an incomplete combustion due to the fuel excess
C. Used for high power or low power (idle) settings
D. Fuel excess acts as a coolant

Explanation

Question 13 of 28

1

Q5. Related to lean mixtures, choose the correct answer:

Select one of the following:

A. From 18:1 to 15:1
B. Leads to an incomplete combustion due to the fuel excess
C. Used for high power or low power (idle) settings
D. Fuel excess acts as a coolant

Explanation

Question 14 of 28

1

Q6. Related to the mixture ratio, chemically correct or Stoichiometric ratio is:

Select one of the following:

14:1
15:1
16:1
17:1

Explanation

Question 15 of 28

1

Q7. The main properties of gas turbine fuels are:

Select one of the following:

A. Thermal instability, low freezing point, low sulfur content
B. Thermal stability, high freezing point, low sulfur content
C. Thermal stability, low freezing point, high sulfur content
D. Thermal stability, low freezing point, low sulfur content

Explanation

Question 16 of 28

1

Q8. The most used gas turbine fuel is:

Select one of the following:

A. A1
B. A
C. B
D. JP-4

Explanation

Question 17 of 28

1

Q1. Components of the oil system:

Select one of the following:

A. Magnetic chip detector A,D,B,A,B,D,B,C
B. Squeeze film bearing
C. Air separator
D. All above and filters and strainers

Explanation

Question 18 of 28

1

Q2. Types of ignition units:

Select one of the following:

A. DC (Low voltage system)
B. Transistorized
C. AC (High voltage system)
D. All above are correct

Explanation

Question 19 of 28

1

Q3. Igniter plugs:

Select one of the following:

A. Air gap type
B. Surface discharge
C. Both are right
D. All are wrong

Explanation

Question 20 of 28

1

Q4. How can we detect the particles in the lubrication system?

Select one of the following:

A. With a magnetic chip detector
B. By gravity
C. With pumps
D. None of the above

Explanation

Question 21 of 28

1

Q5. Which are the factors to select an engine for a combat aircraft:

Select one of the following:

A. Flight speed, agility, flight envelope, STOL, VTOL,...
B. Number of air intakes, flight envelope, agility
C. Wing and tail type, agility, flight speed
D. B and C are correct

Explanation

Question 22 of 28

1

Q6. A way of avoiding contrail concentration is:

Select one of the following:

A. Improve the general efficency of the engine
B. Desingn new alternativa routs
C. None of the above
D. Both options

Explanation

Question 23 of 28

1

Q7. The highest concentration of CO2 due to aircraft is located:

Select one of the following:

A. Near the equator at 2000ft
B. Between Paralels 30 and 60 (N) in the tropopause
C. Between Paralels 30 and 60 (S) in the tropopause
D. Over Australia

Explanation

Question 24 of 28

1

Q8. Emissions because of aircraft and its engines contribute

Select one of the following:

A. 2-3% of the CO2 global production
B. 10% of the global production
C. Less than 0,1%
D. Emissions in aircraft are only N2 and H2O

Explanation

Question 25 of 28

1

Q9. Lobe type nozzles are designed to:

Select one of the following:

A. Improve the asthetics of the engine
B. Reduce the noise level
C. Control the flow of air to increase the thrust
D. The main objective is to avoid possible strike damages

Explanation

Question 26 of 28

1

Q10. Acoustic Absorbent sheets in engines:

Select one of the following:

A. convert noise into heat
B. greatly improve the weight
C. are porous skins
D. A and C

Explanation

Question 27 of 28

1

Q11. Throughout history the noise level has:

Select one of the following:

increased
decreased
remained equal
it has never been a priority

Explanation

Question 28 of 28

1

Q12. Choose the correct option:

Select one of the following:

If combat regime is used for long times pc is lighter option (interdiction) but if combat regime si used for short times no pc is the best option (future)
If combat regime si used for short or long times pc is lighter option always.
If combat regime is used for short times pc is lighter option (interdiction) but if combat regime si used for long times no pc is the best option (future)
None of them is correct

Explanation