DC GENERATOR - Quiz

1) Why the terminal voltage decreases if load increases in DC shunt generator?

Because of armature reaction effect Due to increased in armature resistance Because of brush voltage drop decreases Due to increased in shunt field inductance

2) Which type of DC generator is used for long distance distribution lines?

Shunt generator Series generator Differential compound generator Cumulative compound generator

3) Which method is used to improve the insulation resistance in DC generator?

Replacing the brushes frequently Heating the machine by running periodically Cleaning the commutator segments regularly Blowing hot air in to the machine during maintenance

4) Which type of D.C Generator works in absence of residual magnetism?

Shunt generator Series generator Compound generator Separately excited generator

5) Which type of D.C generator is used for arc welding?

Shunt generator Series generator Differential compound generator Cumulative compound generator