System Measurements Flashcards
1
Q
What are the three engine RPM sensing methods?
A
Rotating magnetic tachometer - electrical three phase tachometer - electronic impulse tachometer
2
Q
How does a Wheatstone bridge work?
A
Temperature changed resistivity.
3
Q
Whats another word for a twisting force?
A
Torque.
4
Q
What does a synchroscope do and why?
A
Match engine RPM to avoid vibration,
5
Q
What are the two different types of vibration monitoring?
A
Magnet and piezoelectric cystal
6
Q
How does a piezoelectric crystal work when measuring vibration?
A
Voltage is proportional to vibration amplitude.
7
Q
Concerning a fuel gauge system, the most relevant fuel parameter is…
A
Mass.
