Ball or roller antifriction bearings are used to support gas turbine rotors for all EXCEPT which of the following?

Correct Answer: Option B — To offer maximum rotational resistance

Antifriction bearings, such as ball or roller types, are selected for gas turbines specifically to minimize rotational resistance and friction. They are designed to support high-speed rotors with precision, accommodate axial and radial loads, and handle thermal expansion, rather than providing resistance to the rotation of the shaft.