note on construction,working and properties of DC motor
Answers
CONSTRUCTION OF DC MOTOR:
A DC motor or a DC machine consists of two windings namely field winding and armature winding. ... The field winding produces a magnetic flux in the air gap between the armature and field windings and the armature is placed in this magnetic field. The construction of DC motor or machine is shown in Figure.
WORKING OF DC MOTOR:
A machine that converts DC electrical power into mechanical power is known as a Direct Current motor. DC motor working is based on the principle that when a current carrying conductor is placed in a magnetic field, the conductor experiences a mechanical force.
PROPERTIES OF DC MOTOR:
1.For a fixed load, the shaft speed is proportional to the applied voltage.
2.For a fixed voltage, the shaft speed is proportional to the torque load applied to the shaft