Final answer:
At a flat pitch, any induced flow produced is reduced.
Step-by-step explanation:
Flat pitch refers to the angle at which a propeller blade is set relative to the aircraft wing or the rotor disk of a helicopter. When the pitch is flat, meaning the blade is set parallel to the airflow, the induced flow produced is minimal. This is because there is less lift generated and therefore less air being displaced downward, resulting in a lower induced flow. So, at a flat pitch, any induced flow produced is reduced.