What must be considered if the alternator fails in a helicopter?

Question

Question PPL(A) - Private Pilot License - Aircraft General Knowledge

QuizVDS · Accepted Answer

No change as long as the battery provides enough power

QuizVDS · Answer

All instruments and warning systems will fail

QuizVDS · Answer

The engine runs roughly and is prone to knocking

QuizVDS · Answer

Only high power consumers will failing

Id 44 - PPL(A) EN - What must be considered if the alternator fails in a helicopter?