Principle of operation of DC motors

What are the main parts of a DC motor?

• proton, neutron, electron, nucleus, and electron cloud

• armature, commutator, brushes, axle, and field magnet

• battery, switch, resistor, capacitor, and inductor

• solar panel, wind turbine, hydroelectric dam, nuclear reactor, and coal power plant

How is a DC motor constructed?

• It is constructed with a stator, rotor, commutator, and brushes.

• It is constructed with a fan, battery, and wires.

• It is constructed with a light bulb, switch, and resistor.

• It is constructed with a solar panel, inverter, and gearbox.

How does a DC motor work?

• By harnessing the energy of sunlight to create motion.

• By using the force of magnetic fields to create motion.

• By using the power of sound waves to create motion.

• By relying on the force of gravity to create motion.

What is the working principle of a DC motor?

• Friction between gears and shaft

• Chemical reaction between electrodes

• Sound waves produced by the motor

• Interaction between current-carrying conductor and magnetic field

Name two types of DC motors.

• AC motor, Stepper motor

• Hydraulic motor, Pneumatic motor

• Brushed DC motor, Brushless DC motor

• Synchronous motor, Induction motor

What are the different types of DC motors?

• Hydraulic motors, Pneumatic motors, Magnetic motors

• AC motors, Stepper motors, Servo motors

• Single-phase motors, Three-phase motors, Synchronous motors

• Brushed DC motors, Brushless DC motors, Coreless DC motors

Where are DC motors commonly used?

• In cooking utensils

• In outer space

• Household appliances, automotive applications, and industrial machinery

• In underwater construction

What are some applications of DC motors?

• Cooking utensils, musical instruments, sports equipment

• Office supplies, electronic gadgets, pet accessories

• Electric vehicles, industrial machinery, robotics, household appliances

• Medical devices, construction tools, gardening equipment

What are the advantages of using DC motors?

• Noisy operation, limited speed range, high maintenance, and low efficiency

• Low starting torque, difficult speed control, complexity, and high cost

• Limited applications, low durability, high power consumption, and difficult to find replacement parts

• High starting torque, easy speed control, simplicity, and cost-effectiveness

List two advantages of DC motors.

• Low starting torque and easy speed control

• High starting torque and difficult speed control

• High starting torque and easy speed control

• Low starting torque and difficult speed control