1 ptsPTOfficial number: 4149
What most often cause loss of start-up?
Explanation
Correct answer: Tram power failure (e.g. loss of overhead connection or a tram stop "on the insulator").
A tram, as an electric vehicle, requires a constant power supply from the traction network to start and move. The most common cause preventing it from moving off is an interruption in the power supply. This can result from a general network failure or the pantograph stopping in a location devoid of voltage, such as a section insulator.