Mechatronics Systems Quiz

What type of movement does a standard DC motor create?

• Linear movement

• Rotary movement

• Vibrational movement

• Oscillating movement

What happens to the direction of rotation if the direction of current is reversed in a DC motor?

• It stops

• It remains the same

• It reverses

• It speeds up

What can solar motors run directly from?

• Batteries

• Wind turbines

• Solar panels

• Generators

What is shown on the right side of the document?

• A battery symbol

• A resistor symbol

• A motor symbol

• A switch symbol

In a brushless DC motor, which part is magnetized?

• Stator

• Rotor

• Commutator

• Brushes

What is the main function of brushes in a brush-type DC motor?

• To provide insulation

• To contact with the commutator ring

• To cool the motor

• To increase speed

What must happen for the rotation to continue in a brush type DC motor?

• Increase the current

• Reverse the current direction

• Decrease the voltage

• Stop the rotor

What does the speed of the motor depend on in a brush type DC motor?

• The size of the rotor

• The current through the armature coil

• The number of brushes

• The type of commutator

Why do brush type DC motors need maintenance?

• The stator coils need frequent replacement.

• The permanent magnet rotor wears out quickly.

• The brushes wear and need to be replaced.

• The motor casing corrodes easily.

What components do brushless DC motors consist of?

• A commutator and brushes

• Stator coils and a permanent magnet rotor

• A gearbox and a flywheel

• A piston and a crankshaft