The most basic difference is the power source. A.C. motors are powered from alternating current (A.C.) while D.C. motors are powered from direct current (D.C.), such as batteries, D.C. power supplies or an AC-to-DC power converter.

1. IMPORTANCE OF
AC & DC MOTORS
 EEE-2203
 ELECTROMECHANICAL ENERGY
CONVERSION-II

2. PRESENTED BY-
1) MD JANNATUL ISLAM JISAN
2) EMRAN HOSSAIN SHAIKAT
3) ABU ZADID
4) SABBIR AHMED
5) SAIMUM HOQ

3. MOTOR!
What is an ‘Electrical Motor’?

4. MOTOR

5. ELECTRIC MOTOR: How it works?!

6. Classification or Types of Motor
Motor
DC Motor AC Motor
Synchronous
Motor
Induction
Motor
Single Phase Three Phase
Special Motor

7. What is DC Motor ?
This is a device that converts DC electrical energy to a mechanical
energy.
 This DC or direct current motor works on
the principal, when a current carrying
conductor is placed in a magnetic field, it
experiences a torque and has a tendency
to move.
This is known as motoring action. If the
direction of current in the wire is reversed,
the direction of rotation also reverses.
When magnetic field and electric field
interact they produce a mechanical force,
and based on that the working principle of
DC motor is established.

8. NOTA BENE:
Structurally and construction wise a direct
current motor is exactly similar to a DC
generator, but electrically it is just the opposite.
Here we unlike a generator we supply electrical
energy to the input port and derive mechanical
energy from the output port. We can represent
it by the block diagram shown below.

9. What is AC Motor ?
An AC motor is an electric motor driven by an
alternating current (AC).
 The AC motor commonly consists of two basic
parts, an outside stator having coils supplied with
alternating current to produce a rotating magnetic
field, and an inside rotor attached to the output
shaft producing a second rotating magnetic field.
The rotor magnetic field may be produced by
permanent magnets, reluctance saliency, or DC or
AC electrical windings.