What three specifications determine the torque in a motor?

The correct answer identifies three key specifications that directly influence the torque produced by a hydraulic motor: inlet pressure, surface area of motor elements, and radius of rotation.

Inlet pressure refers to the hydraulic pressure provided to the motor. A higher inlet pressure increases the force exerted on the motor elements, directly contributing to increased torque output.

The surface area of motor elements is crucial because it defines how much of that pressure translates into force. Larger surface areas can harness more hydraulic force, thereby increasing the torque output.

The radius of rotation connects the generated force to torque; as torque is a function of the radius at which the force acts, a larger radius results in greater torque due to the increased leverage from the distance the force acts away from the motor’s center.

Together, these elements create a formula for calculating torque in hydraulic systems, highlighting why these specific specifications are fundamental in determining motor torque. Other options do not directly address these critical hydraulic principles.