For a parallel axis single reduction gear, what statement is true?

Correct Answer: Option A — The drive pinion is the smaller of the two gears and rotates at a relatively high speed. The driven gear is the larger of the two gears and rotates at a relatively low speed.

In a parallel axis reduction gear, the pinion is the high-speed, low-torque input component connected to the prime mover. The driven gear is the larger, low-speed, high-torque output component connected to the propeller shaft. This mechanical arrangement facilitates the necessary torque multiplication required for efficient ship propulsion.