4 PMSM AC Principles of operation

What is the principle of operation of a permanent magnet synchronous motor?

• A) Electromagnetic induction

• B) Permanent magnet attraction and repulsion

• C) Electrostatic attraction

• D) None of the above

What is the synchronous speed of a permanent magnet synchronous motor?

• A) Equal to the rotor speed

• B) Less than the rotor speed

• C) Greater than the rotor speed

• D) None of the above

How does a permanent magnet synchronous motor achieve synchronous speed?

• A) By applying DC voltage to the stator winding

• B) By applying AC voltage to the stator winding

• C) By adjusting the rotor position

• D) None of the above

What is the function of the permanent magnets in a permanent magnet synchronous motor?

• A) To create an electric field

• B) To create a magnetic field

• C) To provide torque

• D) None of the above

What is the advantage of using permanent magnets in a PMSM?

• a) Higher efficiency

• b) Lower cost

• c) More reliable

• d) Lower maintenance