This document discusses the key components and functioning of a DC motor. It describes how a DC motor converts electrical energy to mechanical energy using a permanent magnet and wire coils that generate a magnetic field when current is applied. The interaction of these fields causes the armature to rotate. The main parts of a DC motor are identified as the yoke, poles, armature core, field winding, and brushes. The yoke provides structural support and a path for magnetic flux. Poles contain the field winding that produces a magnetic field. The armature core has conductors that interact with this field. Brushes transfer current between the rotating armature and external load.

1. Elements of Electrical

2. Presented by
 KISHAN PATEL

3.  In day to day life DC motor is very useful to as.
It is use in many electrical equipments. It is simple,
cheap , various sizes and packages.
 DC motor convert electrical energy into
mechanical energy

4. How DC motor work ?
 DC motor consist of permanent magnets with
loops of wire inside
When current is applied, the wire loops
generate a magnetic field , which reacts against
the outside field of the static magnet
The interact of the field produces the movement
of the armature

5. Construction of DC
motor
Yoke
Poles, and pole core , shoe
Field winding
Armature core
Brushes

6. Function of
each part of
DC motor

7. YOKE:
It is outer cover of dc motor also called as frame
It provides protections to the rotating and other
part of the machine from moisture , dust etc
Yoke is an iron body which provide the path for
the flux to complete the magnetic circuit
It provides the mechanical support for the poles

8. Poles and pole
corePoles are electromagnet, the field winding is
would over it.
It produces the magnetic flux when the field
winding is excited
The construction of pole is done using the
lamination of particular shape reduce the
power loss due to eddy current.

9. Field winding
The coil wound on the pole the pole core are called
field coils.
Field coils are connected in series to from field
winding
Field winding is also called as Exiting winding
Materials used for copper conductor is copper

10. Armature
core:The armature is a cylindrical drum mounted on the
shaft
Armature conducts are placed in these slots
Armature core provides low reluctance path to flux
produced by the field
MATERIAL USED: high permeability, low reluctance
cast steel or cast iron material is used

11. Brushe
s:Current are conducted from the armature
the armature to the external load by the
carbon brushes which are held against the
surface of the commutator by springs
FUNCTION OS BRUSHES:
To collect the current from the commutator
and apply it to the external load in generator
and vice versa in motor

12. Thanks
your…!!!