🔍 Key Concepts

• Axial piston motor with tilting-box (swashplate) control and how changing the angle affects displacement • Relationship between displacement angle, speed, and torque in a hydraulic motor running at constant supply pressure/flow • What happens at neutral stroke (zero angle) in a variable displacement motor

💭 Think About

• First, think about what neutral stroke (zero swashplate/tilting-box angle) means for piston travel, displacement per revolution, and therefore torque and speed. • If the supply flow and pressure to the motor stay the same, how does increasing the tilting-box angle (and thus displacement per revolution) affect torque and speed? Which one goes up, and which one goes down? • Compare the choices: which options mix up maximum speed and maximum torque with ‘just prior to neutral’ versus ‘full deflection’? Decide at which angle you would logically expect maximum speed, and at which angle you would expect maximum torque.

✅ Before You Answer

• Be clear that neutral stroke = zero displacement, so no torque is produced and the motor effectively does not transmit power. • Remember: for a given supply, large displacement means high torque and low speed; small displacement means low torque and high speed. • Check each option for internal consistency: does it ever claim maximum torque or maximum speed occurs when the tilting box is near neutral stroke? That should trigger you to reconsider that choice.