Which of the following is the commonly used generator in a DC welding machine? 

Applications of DC generators

Compound generator:

A compound generator is commonly used in DC welding machines because it combines the characteristics of both series and shunt generators:

• It provides a relatively stable voltage (like a shunt generator).
• It can handle sudden load changes well (like a series generator).
• This ensures a consistent arc, which is crucial for welding quality.

Shunt generator:

• Shunt generators are known for providing a relatively constant output voltage, making them suitable for several practical applications such as battery charging, electroplating and electrolysis.

Series generator:

• Used in early electric traction, arc lighting, and boosting voltage in long DC lines.

Permanent magnet generator:

• Used in wind turbines, small hydro generators, bicycles (dynamo), portable generators, engine ignition systems, and renewable energy systems for efficient, maintenance-free power generation.