Brushless DC Motors

Which option is incorrect about Brushless DC motors?

• they are more efficient

• they are made with high quality materials

• they are less noisy

• they are more reliable

True or false: Brushless DC Motors are heavier than brushed motors

• Definitely true

• I am sure it is false

Indicate the type of brush that is not real.

• floor brush

• paint brush

• tooth brush

• hair brush

In the donkey and carrot analogy, what do the donkey and carrot represent?

In the donkey and carrot analogy, what happens when the donkey metaphorically eats the carrot?

• The BLDC motor dies and needs to be replaced

• The BLDC motor stops spinning

• The BLDC motor spins at a exponential speed

• The BLDC motor starts to spin in the other direction

What is the difference between brushless and brushed DC motors?

There is an electronic controller in a BLDC, which decides which coils to energize when. What device makes this possible?

• There are two rotors that communicate to the controller to make the third rotor stop.

• There is a software device that beams a signal to a satellite

• There is a hall effect that makes the hall appear to spin.

• There is a sensor that can determine the position of the rotor.

True or false: In the BLDC motor the permanent magnet is on the stator, and the coils are on the rotor.

• 100% true

• 100% false