To obtain performance of permanent magnet synchronous motor.

1. How does a PMSM maintain a constant speed?

a)By adjusting its resistance automatically
b) By using feedback control to regulate voltage and frequency
c)By increasing its rotor inertia
d)By varying the number of poles dynamically

2.What does the EMF equation of a PMSM depend on?

a) The flux per pole and frequency
b) Only the number of turns per phase
c) The voltage and current
d) The resistance and inductance of the motor

3.What happens to the current drawn by a PMSM as the load increases?

a) It decreases linearly
b)It increases non-linearly
c)It remains constant
d)It fluctuates randomly

4. Why does the current increase steeply at higher loads in the PMSM experiment?

a) Due to overheating of the rotor
b)The motor becomes an open circuit at high loads
c)Because of the increased demand for torque, requiring more current
d)The voltage increases at high loads

5.At what load range does the current begin to increase steeply in the PMSM experiment?

a) 0-2 kg
b) 2-4 kg
c) 4-5 kg
d) 6-8 kg