🔍 Key Concepts

• Difference between a clutch and a coupling in marine propulsion systems • How slip is produced and controlled in mechanical vs electromagnetic devices • Which devices are designed to transmit torque while accommodating misalignment rather than intentionally slipping

💭 Think About

• Ask yourself: Which option is primarily designed to connect shafts while allowing for misalignment and vibration, not for intentional controlled slip? • Consider which device uses a magnetic field to transmit torque—what happens to slip when current is increased or decreased? • Think about which choice is commonly used where smooth engagement and torque control are needed, and can operate with some slip without immediate damage.

✅ Before You Answer

• Identify which option’s main function is to flex and align shafts rather than to engage/disengage power. • For each choice, decide if slip is normal operating behavior or a sign of malfunction. • Consider which choice is most often used where variable speed or soft start is desired, which naturally involves some controlled slip.