Performance of a Brushless DC (BLDC) motor driven by Hydrogen Fuel Cell

1. What type of energy does a hydrogen fuel cell primarily generate?

a) AC
b) Mechanical
c) DC
d) Heat

2. What is the role of the inverter in this system?

a) Convert DC to AC for BLDC motor
b) Stabilize voltage
c) Measure power
d) Store hydrogen

3. What electrical quantity is used as input to the BLDC motor?

a) High-frequency DC
b) Single-phase AC
c) 3-phase AC
d) Pulsed DC

4. Which signal controls the inverter’s switching states?

a) Analog pulse
b) PWM signal
c) 5V DC bias
d) Current feedback

5. What is the relationship between torque and current in a BLDC motor?

a) Torque ∝ Voltage
b) Torque ∝ 1/Current
c) Torque ∝ Current
d) Torque ∝ Frequency