🔍 Key Concepts

• Electromagnetic slip coupling basic purpose and how it transmits torque • Relationship between excitation current, torque, and slip (speed difference) • Effect of the coupling on torsional vibration and on response to sudden load changes

💭 Think About

• Ask yourself: In an electromagnetic slip coupling, what directly controls the amount of torque transmitted between the driving and driven members? • Think about whether this type of coupling tends to smooth out sudden load changes or follow them instantly. • Consider what happens to mechanical vibrations in a system when torque is transmitted magnetically instead of through a rigid mechanical connection.

✅ Before You Answer

• Verify which option correctly links magnetic (non-contact) torque transmission with its effect on vibrations or smoothness of power flow. • Check whether torque should increase or decrease when the excitation current is reduced in this kind of coupling. • Be sure the stated advantage matches the idea of slip between primary and secondary elements, and how that affects speed vs. torque.