🔍 Key Concepts

• Study figure "B" carefully: note the direction of rotation (R) versus the direction of applied torque (T) and the power flow direction arrow. • Recall what regenerative operation means in electric propulsion: power can flow from the motor back to the supply when the torque opposes the rotation. • Compare figures A → B → C and track what happens to the shaft speed and direction as you go from ahead rotation to astern rotation.

💭 Think About

• In figure "B", is the shaft still rotating in the original (ahead) direction, or has it already reversed? What does that imply about what this mode is doing to the existing rotation? • If power is flowing back toward the source, is the system adding mechanical energy to the shaft or removing it? How would that affect speed as you prepare to go astern? • Between the four choices, which one best describes using opposite torque and reverse power flow on a still-ahead‑turning shaft during the transition to astern?

✅ Before You Answer

• Verify in figure "B" that R (rotation) and T (torque) point in opposite directions. • Verify the power flow direction in figure "B" compared with figures "A" and "C". • Choose the option that describes slowing the shaft by opposing its motion and feeding energy back, before the actual reversal of rotation occurs.