DC Motor Quiz

What is the main function of a DC motor?

• To convert mechanical energy into electricity

• To convert electrical energy into mechanical energy

• To stabilize alternating current

• To store energy chemically

Which part of the DC motor produces torque?

• Commutator

• Magnetic field

• Armature

• Current regulator

Which type of DC motor is suitable for high starting torque?

• DC shunt motor

• DC series motor

• Compound motor

• AC motor

What is the main effect when the load on a DC motor increases?

• Motor speed increases

• Armature current increases

• Commutator stops functioning

• Input voltage increases

What is the purpose of carbon brushes in a DC motor?

• To cool the armature

• To connect the external circuit to the armature via commutator

• To prevent reverse current

• To absorb motor vibrations