AM Electrical Systems & Avionics Flashcards
6 cards from real AM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 AM Electrical Systems & Avionics flashcards as text
Which component converts AC generator output to DC for aircraft bus use?
Answer: Rectifier/TRU
A Transformer Rectifier Unit (TRU) steps down AC voltage and converts it to DC for the aircraft's DC bus.
What does a transponder Mode C provide to ATC?
Answer: Pressure altitude and identification
Mode C transponders encode and transmit the aircraft's pressure altitude along with its squawk code to ATC radar.
A static inverter in an aircraft converts:
Answer: DC to AC
A static inverter converts DC power from the aircraft bus to AC power needed by instruments and avionics equipment.
What is the function of an aircraft VOR receiver?
Answer: Provides magnetic bearing to/from a VOR station
A VOR receiver measures the phase difference between reference and variable signals to determine the aircraft's magnetic bearing to or from a VOR ground station.
When replacing an aircraft antenna coaxial cable, what must be verified after installation?
Answer: VSWR (Voltage Standing Wave Ratio)
VSWR must be measured after coaxial cable replacement to verify proper impedance matching and antenna system efficiency.
Which document defines the approved avionics equipment for a specific aircraft?
Answer: Aircraft Equipment List / AFMS
The Aircraft Equipment List or Approved Flight Manual Supplement (AFMS) documents which avionics are approved for installation on a specific aircraft.