Question

what are the properties of an alternator generator and dynamo generator and motor generator?

b. list the advantage and disadvantages

thank you

Answer 1

Properties of an Alternator:

1.It induces alternating current.

2. Its magnetic field is rotating.

3. It takes input supply from stator.

4. It has stationary armature.

5. It has a wide range of RPM.

6. Generally it has a higher output.

Advantages: Most of its characteristics are the advantages. It has a small size also.

Disadvantages:

1. Because of the higher voltage it require more insulation

2. Use of transformer makes it bulky.

3. Because of the high currents overheating and sparking happens.

7. It does not charge a dead battery.

Properties of Dynamo Generator:

1. It generates both ac as well as dc.

2. It has a stationary magnetic field.

3. It takes input supply from rotor.

4. It has a rotatory armature.

5.It has a narrow range of RPM.

6. Lower output.

Advantages of a Dynamo generator:

The major advantage is that it can generate bot ac and dc. Its output is constant. It can charge a dead battery.

Disadvantages of a Dynamo generator:

1. It has a lower output.

2.It has a narrow range of RPM.

3. It requires large space.

Motor Generator:

Properties:

It is a combination of motor and generator. It converts electric power from one form to another.

advantage: It can give a controlled output e.g. it can give a controlled frequency, variable voltage etc.

Disadvantage: system is complex and synchronization is sometimes difficult.