Aircraft Systems & Instruments Flashcards
6 cards from real CGI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Aircraft Systems & Instruments flashcards as text
What is the primary purpose of the aircraft electrical bus?
Answer: To distribute electrical power from the alternator/battery to aircraft systems
The electrical bus is a common junction that distributes power from the alternator and battery to all electrical systems and avionics.
What is the purpose of the aircraft's ammeter?
Answer: Indicates the rate of current flow in or out of the electrical system
The ammeter shows whether the alternator is producing sufficient current (positive indication) or whether the battery is discharging (negative indication).
Which of the following describes 'absolute altitude'?
Answer: Altitude above the terrain directly below the aircraft (AGL)
Absolute altitude is the true height of the aircraft above the terrain or surface directly beneath it, measured in feet AGL.
What is 'best glide speed' (Vbg)?
Answer: Airspeed that provides maximum glide distance over the ground in an engine-out situation
Best glide speed maximizes the lift-to-drag ratio, giving the greatest horizontal distance for a given altitude loss during an engine-out glide.
What effect does lowering flaps have on the stall speed?
Answer: Stall speed decreases because of increased lift at a given airspeed
Lowering flaps increases the wing's camber and lift coefficient, allowing the wing to stall at a lower airspeed.
What does the term 'Vne' represent on the airspeed indicator?
Answer: Never-exceed speed, marked by the red radial line
Vne is the never-exceed speed, marked by the red radial line on the ASI; exceeding it risks structural failure due to aerodynamic forces.
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