4 PMSM

The air gap between the stator and rotor in a motor is kept as small as possible to:

• A) increase magnetic flux density.

• B) reduce magnetic flux density.

• C) decrease rotor speed.

• D) increase the motor's efficiency.

Which of the following is NOT a constructional feature of a permanent magnet synchronous motor?

• a) Rotor

• b) Stator

• c) Inductance

• d) Commutator

Which type of material is used for the construction of the rotor in a permanent magnet synchronous motor?

• a) Copper

• b) Aluminum

• c) Steel

• d) Permanent magnet

What is the primary component in a permanent magnet synchronous motor?

• a) Rotor

• b) Stator

• c) Commutator

• d) Brushes

What is the purpose of the stator core in a PMSM?

• A. To hold the windings

• B. To provide a magnetic path for the flux

• C. To dissipate heat