True or False: The propeller pitch is varied to maintain an Np of 2,000 rpm.

The statement is true because the propeller pitch in the T-6A is actively adjusted to maintain a constant propeller RPM (Np) of 2,000 revolutions per minute. This dynamic adjustment is essential to optimize engine performance and achieve specific flight profiles, be it in cruise, takeoff, or any other phase of flight.

By varying the pitch of the propeller blades—changing their angle relative to the oncoming air—the system can increase or decrease the amount of thrust produced while keeping the engine speed stable. This control is crucial in different flight scenarios to enhance efficiency and ensure safe operations.

Therefore, the ability to modulate propeller pitch to maintain the set RPM is fundamental in the management of the aircraft's performance across all phases of flight, rather than limited to just one specific operational condition.