Which design uses 3/8 in. cable and roped sprocket?

• A. Aircraft Cable Design
• B. Rack and Pinion
• C. Drive Unit
• D. Talcum Powder Application

Answer: (A)

The main concept here is the roped drive arrangement that uses a wire rope wrapped around roped sprockets to transfer motion from the drive motor to the moving members. Using a 3/8 in. aircraft cable is characteristic of this design, because a wire rope of that size provides the needed strength and bending characteristics to loop around the sprockets and transmit torque reliably without excessive wear. This setup is commonly referred to as an Aircraft Cable Design.

The other options don’t fit this configuration. A rack and pinion system uses a gear and linear rack to convert rotary motion to linear movement, which isn’t how a roped drive transmits torque. A drive unit is a general term for the motor and gearbox and doesn’t specify the cable and sprocket arrangement. Talcum powder application is unrelated to drive designs.