1. Waiting for others …………

2. ELECTRICAL MACHINES
Prepared by,
Vijay Balu Raskar
SERIAL NUMBER NAME OF CHAPTER
01 TRANSFORMERS
02 ELECTROMECHANICAL CONVERSION
PRINCIPLES
03 BASIC CONCEPT OF ROTATING ELECTRICAL MACHINES
04 D.C.MACHINES
05 POLYPHASE SYNCHRONOUS MACHINES
06 POLYPHASE INDUCTION MOTORS
07 ARMATURE WINDINGS

3. 2. ELECTROMECHANICAL
CONVERSION PRINCIPLES

4. PROJECT FOR STUDENT
• Collect information on “MOTOR”,
“RESISTANCE” and “LED”
• Bring following material :
1) Small Motor (Any RPM)
2) Any Resistance
3) One RED LED

5. In electromechanical
systems, energy is
stored in magnetic
and electric fields.

6. An Electro-mechanical
energy is converted
electrical energy into
mechanical energy
OR
mechanical energy into
electrical energy.

7. Electromechanical energy conversion
devices:-
1) Small motion like telephone receivers,
microphone, Load-speakers etc
2) Consist of Force or Torque producing
devices like Electro magnets, relays,
moving coil instruments etc
3) Continuous energy conversion like
motor and generators.

8. The energy storage
capacity of the magnetic
field is much greater
(about 25,000 times)
than electric field.

9. According to Principal of
energy conversion,
energy can neither be
created nor destroyed, it
can be converted from
one form to another
form.

10. Thank
You