98. SEMANAS 2018.

Ismael Vázquez
Quiz by Ismael Vázquez, updated more than 1 year ago
Ismael Vázquez
Created by Ismael Vázquez over 2 years ago
157
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Description

Tema 12. Clase 12 Abril. 1 hora
Tags

Resource summary

Question 1

Question
FADEC means:
Answer
  • Full authority digital engine control
  • Full authority duplex engine control
  • Forward authority duplex control
  • None of the above

Question 2

Question
Regarding gearboxes and drives, which of the following ones is not one of them?
Answer
  • Internal gearbox
  • Intermediate gearbox
  • Main gearbox
  • Radial driveshaft

Question 3

Question
Lubrication system functions, which of the following ones is not true?
Answer
  • Provide cooling for the bearings
  • Protect the lubricated components
  • Maintain it´s properties under extremely cold temperatures
  • Collect foreign matter

Question 4

Question
In the oil system, it´s basic components are:
Answer
  • A. Oil tank, oil pumps
  • B. Heat exchanger, magnetic chip detector
  • C. A, B and air separator
  • D. C but without magnetic chip detector

Question 5

Question
Regarding air starting system
Answer
  • 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

Question 6

Question
About ignition
Answer
  • 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

Question 7

Question
Regarding the ice protection system, mark out the incorrect one
Answer
  • 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

Question 8

Question
Fire protection systems
Answer
  • 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

Question 9

Question
Q1. Choose the correct answer:
Answer
  • 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

Question 10

Question
Q2. Detonation can be caused by:
Answer
  • A. An incorrect mixture strength
  • B. An incorrect fuel grade
  • C. A combination of high pressure and temperature
  • D. All are correct

Question 11

Question
Q3. Aviation Gasoline can be classified in:
Answer
  • A. Grade 80 (red)
  • B. Grade 90 (green)
  • C. Grade 100 ZZ (blue)
  • D. A and B are correct

Question 12

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

Question 13

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

Question 14

Question
Q6. Related to the mixture ratio, chemically correct or Stoichiometric ratio is:
Answer
  • 14:1
  • 15:1
  • 16:1
  • 17:1

Question 15

Question
Q7. The main properties of gas turbine fuels are:
Answer
  • 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

Question 16

Question
Q8. The most used gas turbine fuel is:
Answer
  • A. A1
  • B. A
  • C. B
  • D. JP-4

Question 17

Question
Q1. Components of the oil system:
Answer
  • 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

Question 18

Question
Q2. Types of ignition units:
Answer
  • A. DC (Low voltage system)
  • B. Transistorized
  • C. AC (High voltage system)
  • D. All above are correct

Question 19

Question
Q3. Igniter plugs:
Answer
  • A. Air gap type
  • B. Surface discharge
  • C. Both are right
  • D. All are wrong

Question 20

Question
Q4. How can we detect the particles in the lubrication system?
Answer
  • A. With a magnetic chip detector
  • B. By gravity
  • C. With pumps
  • D. None of the above

Question 21

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

Question 22

Question
Q6. A way of avoiding contrail concentration is:
Answer
  • A. Improve the general efficency of the engine
  • B. Desingn new alternativa routs
  • C. None of the above
  • D. Both options

Question 23

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

Question 24

Question
Q8. Emissions because of aircraft and its engines contribute
Answer
  • 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

Question 25

Question
Q9. Lobe type nozzles are designed to:
Answer
  • 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

Question 26

Question
Q10. Acoustic Absorbent sheets in engines:
Answer
  • A. convert noise into heat
  • B. greatly improve the weight
  • C. are porous skins
  • D. A and C

Question 27

Question
Q11. Throughout history the noise level has:
Answer
  • increased
  • decreased
  • remained equal
  • it has never been a priority

Question 28

Question
Q12. Choose the correct option:
Answer
  • 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
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