With planetary gears, even without a control device, the component can act as a(n) ________ if it requires a load to turn.

With planetary gears, even without a control device, the component can act as a(n) ________ if it requires a load to turn.

• A. Servo piston
• B. Idler gear
• C. Held member
• D. Epicyclical gear

Answer: (C)

In planetary gear sets, the gear train works by having one member held stationary while the others move around it to create the desired speed and torque relationships. The held member is simply the part that is restrained from turning, typically by a brake, but it can also be effectively held by the load if the load provides the necessary resistance. When the load requires a resisting torque to turn, that component behaves as the held member, serving as the fixed reference for the planet gears to drive against. This is why the best description here is a held member. As for the other options, a servo piston is an actuator that would actively hold or move a member, an idler gear is just an auxiliary gear used to change direction or spacing, and an epicyclical gear refers to the whole planetary arrangement rather than a specific component acting as the fixed reference.

In planetary gear sets, the gear train works by having one member held stationary while the others move around it to create the desired speed and torque relationships. The held member is simply the part that is restrained from turning, typically by a brake, but it can also be effectively held by the load if the load provides the necessary resistance. When the load requires a resisting torque to turn, that component behaves as the held member, serving as the fixed reference for the planet gears to drive against. This is why the best description here is a held member.

As for the other options, a servo piston is an actuator that would actively hold or move a member, an idler gear is just an auxiliary gear used to change direction or spacing, and an epicyclical gear refers to the whole planetary arrangement rather than a specific component acting as the fixed reference.