3. Parcial 3 Ser

Descripción

AVIÓNICA AVIÓNICA 3er PARCIAL Test sobre 3. Parcial 3 Ser, creado por Ismael Vázquez el 14/05/2018.
Ismael Vázquez
Test por Ismael Vázquez, actualizado hace más de 1 año
Ismael Vázquez
Creado por Ismael Vázquez hace más de 6 años
115
3

Resumen del Recurso

Pregunta 1

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

Pregunta 2

Pregunta
Q2. Select the wrong answer about mechanical tachometers
Respuesta
  • 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.

Pregunta 3

Pregunta
Q3. Electrical tachometers
Respuesta
  • 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.

Pregunta 4

Pregunta
Q4. Electronic tachometers
Respuesta
  • 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

Pregunta 5

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

Pregunta 6

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

Pregunta 7

Pregunta
Q7. FUEL TOTALISER:
Respuesta
  • 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

Pregunta 8

Pregunta
Q8. ENGINE INDICATION AND CREW ALERTING SYSTEM
Respuesta
  • 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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