Performance of a Brushless DC (BLDC) motor using a three-phase inverter

1. What is the purpose of the three-phase inverter in the BLDC motor setup?

a) To measure angular position
b) To convert DC input into AC for the motor
c) To cool the BLDC motor
d) To reduce torque ripple

2. What type of motor is used in this experiment?

a) Stepper Motor
b) Brushed DC Motor
c) Induction Motor
d) Brushless DC Motor (BLDC)

3. How many electrical states occur in one full six‐step cycle?

a) 3
b) 4
c) 6
d) 12

4. What causes the rotor of a BLDC motor to rotate?

a) Friction with stator windings
b) Magnetic attraction of brushes
c) Interaction of stator’s rotating magnetic field with rotor magnets
d) Heat generated from inverter

5. Why are MOSFETs commonly used in BLDC inverters?

a) High switching speed and efficiency
b) Low on‐resistance and slow switching
c) They generate sinusoidal output directly
d) They eliminate the need for sensors