Final answer:
The incorrect statement is 'Interruption means the complete loss of voltage.' Interruptions can take various forms and are not always a complete loss of voltage. They can be caused by events such as short circuits, which generate excessive heat due to low resistance and can be managed by protective devices.
Step-by-step explanation:
The incorrect statement is Option A: Interruption means the complete loss of voltage. Interruption in the context of electrical power supply refers to any temporary cessation of voltage or power supply, and can occur in different forms such as complete or partial, instantaneous, or longer duration. The correct information surrounding power outages includes influences such as momentary interruptions which last from half cycle to less than a minute and are often resolved automatically by systems like auto-reclosing. These interruptions can be due to factors like line outages, which may switch the supply to another source to restore power.
Moreover, short circuits are another cause of outages and occur when there is an undesired low-resistance path across a voltage source. This can lead to excessive heat generation (as per the formula P = V2/r) and potentially causing the affected materials to melt or burn. Short circuits are often caused by factors such as worn insulation. Additionally, protective systems like fuses and circuit breakers are in place to manage unexpected surges in current characteristic of these events.