What is the role of bearings and seals in the main rotor section, and name one common seal type used in gas turbines?

• A. Bearings support the rotor and maintain shaft alignment with minimal friction; seals prevent oil and gas leakage; labyrinth seals are a common type.
• B. Bearings store lubricant; seals heat the oil
• C. Bearings accelerate rotor; seals compress air
• D. Bearings replace fuel; seals create static pressure

Answer: (A)