3. Parcial 3 Ser

Ismael Vázquez
Quiz by Ismael Vázquez, updated more than 1 year ago
Ismael Vázquez
Created by Ismael Vázquez almost 3 years ago
114
3

Description

AVIÓNICA AVIÓNICA 3er PARCIAL Quiz on 3. Parcial 3 Ser, created by Ismael Vázquez on 05/14/2018.

Resource summary

Question 1

Question
Q1. Tachometers in jet engines measure:
Answer
  • RPM at the crankshaft.
  • Percentage of maximum rpm at each shaft.
  • The speed of the incoming air.
  • All are false.

Question 2

Question
Q2. Select the wrong answer about mechanical tachometers
Answer
  • In the centrifugal type mass separates in proportion to the shaft rotating speed.
  • Friction tachometers are very common in aviation.
  • Magnetic drag tachometers use permanent magnets.
  • There are four types.

Question 3

Question
Q3. Electrical tachometers
Answer
  • Electrical generator with the rotor being linked to the engine rotational speed
  • DC or AC. It is autonomous from the electrical aircraft system.
  • Indicator unit is a squirrel cage induction motor fed with the current generated at detector. It is joint to a mechanism similar to the one in magnetic drag tachometers
  • All of above are correct.

Question 4

Question
Q4. Electronic tachometers
Answer
  • Magnetic field detection: permanent magnet solidary to the engine and a coil detector unit
  • Parasitic current detection: due to the blades crossing in front of a sensor
  • Both are false
  • Both are true

Question 5

Question
Q5. Vibration is symptomatic of an impeding problem that could be caused by
Answer
  • Damaged compressor / turbine blade(s)
  • Uneven temperature distribution around turbine blades
  • Both are true
  • Both are false

Question 6

Question
Q6. SEM
Answer
  • Process data from sensors.
  • Detect errors.
  • All are correct
  • Conversion volume is weight

Question 7

Question
Q7. FUEL TOTALISER:
Answer
  • Digitally displays the amount of fuel in each tank on a flight deck indicator and provides an indication of the total amount of fuel on board the aeroplane
  • Allows the crew to select the amount of fuel to be refuelled
  • Uses a motor driven impeller through which the fuel passes and makes the fuel swirl at a rotation rate proportional to the flow rate. Then, the swirling fuel impacts a receiver turbine, inducing a rate of rotation proportional to the swirl rate.
  • All are correct

Question 8

Question
Q8. ENGINE INDICATION AND CREW ALERTING SYSTEM
Answer
  • All are true.
  • It is a part of the EIS
  • Displays primary engine indications
  • provides a centrally located crew alerting system for non-normal situations
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