DC GENERATOR - Quiz

1) What is the cause for the fault, that brush makes chattering noise?

Over loading Insufficient brush tension Excessive brush pressure Insufficient brush spring pressure

2) What is the cause for the fault that bearing over heating in DC generator?

Unbalanced armature Foreign material in air gap More current in armature Incorrect grade of bearing grease

3) What is the cause for the fault that heavy sparking in light loads in DC generator?

Oily commutator surface Defective alignment Defective bearing Wrong alignment