State at least one function and the material used for the following parts of DC Motor.
Part
|
Function
|
Material
|
Yoke
|
-Provides mechanical support for poles
-Acts as protecting cover for machine -Provides path for magnetic flux |
Cast Iron OR Cast Steel
|
Field Winding
|
-Produce magnetic field in which armature rotates
|
Copper
|
Commutator
|
-Converts AC from armature to DC for generator
-Converts DC to AC for motor armature. |
Copper segments insulated from each other by mica
|
Brushes
|
-To collect current from armature winding of generator & supply current to armature winding of motor
|
Carbon
|
Pole shoe
|
To spread the flux in air gap.
|
Cast Iron OR Cast Steel
|
Pole core
|
Provides mechanical support to field winding.
|
Cast Iron OR Cast Steel
|