How does an Electric Motor work

What do DC motors convert?

• Mechanical energy into electrical energy

• Electrical energy into mechanical energy

• Chemical energy into electrical energy

• Heat energy into electrical energy

What forms the stator in a DC motor?

• The rotor

• The commutator

• The metal protective casing

• The brushes

What is the shaft used for in a DC motor?

• To isolate electrical components

• To transfer mechanical energy

• To create an electromagnetic field

• To generate electrical current

What is the purpose of the commutator in a DC motor?

• To protect the motor from external damage

• To cool down the motor

• To transfer power to the rotor

• To segment and electrically isolate the plates

What happens when electricity flows through the coils of a DC motor?

• It cools down the motor

• It stops the motor

• It produces an electromagnetic field

• It charges the battery

What is the role of brushes in a DC motor?

• To reduce friction

• To clean the commutator

• To insulate the commutator plates

• To complete the circuit

What does DC stand for in DC electricity?

• Distributed current

• Diagonal current

• Dynamic current

• Direct current

What is the effect of reversing the battery in a DC motor?

• It stops the motor

• It reverses the direction of current

• It decreases the efficiency of the motor

• It increases the speed of the motor

How can the electromagnetic field around a wire be strengthened?

• By cooling the wire

• By insulating the wire

• By wrapping the wires into a coil

• By increasing the length of the wire

What is Fleming's left hand rule used for in the context of DC motors?

• To identify the poles of the magnets

• To measure the strength of the electromagnetic field

• To calculate the speed of the rotor

• To determine the direction of mechanical force