Bleed air struts are:

• A. Symmetrically installed at various stages of compression to extract air at required temp and pressure
• B. Asymmetrically mounted in intake ramps to reduce drag
• C. Inside cargo bays to pressurize cabins
• D. On wing tips to measure airspeed

Answer: (A)

Bleed air struts are ducts that tap off compressed air from multiple stages of a jet engine’s compressor to supply systems on the aircraft. They’re installed symmetrically around the engine and draw air from different compressor stages so you can get the right temperature and pressure for functions like cabin pressurization, environmental control, and pneumatic systems. Using various stages lets the system maintain a usable bleed air supply across different engine operating conditions, since pressure and temperature change with engine speed. The symmetric arrangement avoids any directional imbalance and ensures consistent delivery.

These aren’t used to reduce drag via asymmetrical mounting, they aren’t located inside cargo bays to pressurize them, and they aren’t wing-tip devices for measuring airspeed.