🔍 Key Concepts

• Relationship between the constant speed electric drive motor and the unit at the A-end • Difference between a pump and a motor in a hydraulic transmission (which one is driven, which one does the driving) • Meaning of variable stroke vs fixed displacement when you see a tilt box or adjustable swash plate

💭 Think About

• From the illustration, decide whether the A-end component is being driven by the electric motor, or if it is doing the driving using hydraulic pressure • Ask yourself: in this system, which end (A or B) is more likely to be the device that converts mechanical rotation into hydraulic flow, and which one converts hydraulic flow back into mechanical rotation? • Look at the label "A-end tilt box" – how does a tilt box or adjustable swash plate affect whether the unit is variable stroke or fixed displacement?

✅ Before You Answer

• Verify whether the component connected directly to the constant speed electric drive motor should be a pump or a motor in a typical hydraulic transmission • Confirm that a tilt box / adjustable swash plate indicates a variable stroke (changeable displacement) unit rather than fixed displacement • Make sure you match the correct function (pump vs motor) and stroke type (variable vs fixed) before choosing among the four options