Can anybody answer these questions?
 

Could anybody who knows the definitive answer to the following questions please post the correct answer? I have conflicting answers when going through my feedback and would really appreciate to know which one is correct! The books my old college used to use are not that helpful.


1. A yaw damper will indicate to the pilot

a. yaw damper movement of the rudder position

or

b. rudder position

I believe answer a. to be correct, but another example of this question words answer a. slightly differently, it says

Yaw damper action on the rudder.

What would be the right answer?


2. Fuel quantity in aircraft tanks is measured by capacitor contents gauges. These sensors measure.

a. The condensor charge
b. Height of the fuel

Which one is more correct? Again in another version of the same question the answer Capacitance replaces Condensor charge. What is the more correct answer?


3. An auto-pilot syncronisation system

a. can itself, when it fails, prevent the autopilot from being
engaged

b. Is inhibited when the autopilot is engaged.


Cheers guys

Not really my field but:

2. Charge will be proportional to capacitance at a constant potential (voltage). However it is tricky to measure charge (I always assumed a.c. was used to measure this), so I think capacitance is a better answer.

Height of fuel is wrong - they measure weight, whereas height would be related to volume.

Send Clowns
Gen Nav/Flt Plng, BCFT

That's good enough for me:D

Can anyone help with the others?

...is correct.

The indication to the pilot is only the movement initiated by the yaw damper and not other rudder movements.

0918

2. Fuel quantity in aircraft tanks is measured by capacitor contents gauges. These sensors measure.

a. The condensor charge
b. Height of the fuel

Which one is more correct? Again in another version of the same question the answer Capacitance replaces Condensor charge. What is the more correct answer?

+++++++++++++++++++++++++++++++++++
Tough one you got me checking my notes now also !! I would have to go for the A condensor/capacitor charge based on the fact that the height of the fuel could change with temp/density etc and that's just what the condensor/capacitor contents gauges are designed to overcome.
+++++++++++++++++++++++++++++++++++

3. An auto-pilot syncronisation system

a. can itself, when it fails, prevent the autopilot from being
engaged

b. Is inhibited when the autopilot is engaged.

+++++++++++++++++++++++++++++++++++
Synchronisation has to be functioning for Autopilot to engage otherwise you could get snatch
+++++++++++++++++++++++++++++++++++

I am just a student though not an instructor and could have those wrong but that's what my answer would be if they are in the exam on Monday !!

Thanks for your help guys.

Hiya

I agree with the Yaw damper one, the indicator only shows Rudder movement caused by the Yaw Damper.

The Autosynch one, looks like part of a multi-part question, because failed autosynch could prevent AP engagement, and it is inhibited when the AP is engaged, so both answers are correct.

Where on earth did you get that awful fuel question from?
Okay be careful with these fuel guaging questions. The sensors are capacitors and they will have a certain capacitance or charge depending on the Dielectric value of what's in the tank, but on their own they can only measure volume or height of fuel. What makes the system measure mass or weight of fuel is the compensators fitted in the reference loop. These feed the system effectively with density information, so, what you are looking for in the question is, is it a "Compensated" system or is it just an accurate volume sensing system, which is not affected by attitude, acceleration etc.

If the question does not specify, then assume Compensated since most aircraft will be.

Okay I'm off to lie down now, but feel free to message me if you need to.

My specialist subjects are drinking, bad jokes, Autoflight, Warning and Recording, Engine Instruments, DC Electrics, Piston Engines and Gas Turbines, but I'll have a crack at any Systems stuff.

PFD