AC Motors vs DC Motors

What is the primary function of DC motors?

• Convert mechanical energy to electrical energy

• Convert direct current electrical energy to mechanical energy

• Generate alternating current

• Store electrical energy

Which type of DC motor uses brushes and a commutator for current direction control?

• Brushless DC Motors

• Synchronous Motors

• Induction Motors

• Brushed DC Motors

In brushed DC motors, what component reverses the direction of current in the armature windings?

• Stator

• Commutator

• Brushes

• Rotor

What is the rotating part of a DC motor that contains the windings?

• Stator

• Commutator

• Rotor

• Brushes

Which application is NOT mentioned as a common use for Brushed DC Motors?

• Toys

• Appliances

• Robotics

• Electric vehicles

What is the main advantage of Brushless DC Motors over Brushed DC Motors?

• Longer lifespan

• Simple control

• Compact size

• High starting torque

In DC motors, what is the principle based on which they operate?

• Electromagnetic induction

• Lorentz force

• Magnetic resonance

• Newton's laws of motion

Why do brushed DC motors require regular maintenance?

• Limited speed range

• Potential electromagnetic interference

• Wear and tear of brushes and commutators

• Compact size

In which industry are DC motors widely used due to their high torque and controllability?

• Information Technology

• Automotive

• Agriculture

• Entertainment

What is a disadvantage of DC motors mentioned in the text?

• Lack of precise control

• Lower starting torque

• Additional control complexity

• Brushes and commutator maintenance