Question

explain electrical considering of a motor with its working. ​

Answer 1

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➡️Electric motors are electromechanical machines that convert electric energy into mechanical energy.

➡️ Despite differences in size and type, all electric motors work in much the same way: an electric current flowing through a wire coil in a magnetic field creates a force that rotates the coil, thus creating torque.

Answer 2

Answer:

There are two types of motor:

• DC Motor (Direct current)
• AC Motor (Alternating current)

1). DC Motor (Direct current)

• It is a device which convert electrical energy into mechanical energy.

Construction:

DC motor consist of 4 major parts:

1). Field magnet : It is a strong permanent magnet.

2). Rectangular coil : Insulated copper wire wound on a soft iron ore it behave like a rectangular coil.

3). Split rings : R1 and R2 are two metallic semi-circular rings. It is connected to end of the rectangular coil.

4). Carbon brushes : In external circuit two brushes are connected which provide contact to metallic rings.

Working of DC motor:

• When electric current passes through the rectangular coil then AB and CD side experience a force in presence of magnetic field.
• According to Fleming left hand thumb rule AB side experience a force in outward direction and CD side experience a force in inward direction.
• Due to equal and opposite force coil will be rotate and electric energy convert into mechanical energy.

Uses of DC motor :

• It is used in toys, electric fan, water pumping motor and electric circuits, etc.

2). AC Motor (Alternating current)

• It is device which convert mechanical energy into electrical energy.

Construction:

AC motor consist of 4 major parts:

1). Field magnet : It is a strong permanent magnet.

2). Rectangular coil : Insulated copper wire wound on a soft iron core it behave like a rectangular coil.

3). Slip rings : It is metallic circular ring which provide external contact to brushes.

4). Brushes : In external circuit two brushes are connect which provide contact to metallic rings.

Working of AC motor:

• Initially shaft is rotate via turbine or any external source.
• When coil rotate in uniform magnetic field it produced an induced current.
• According to Fleming's left hand thumb rule CD side experience a force outward and side AB experience a force inward direction. Hence, coil will rotate and mechanical energy convert into electrical energy.