If a dead generator is accidentally energized while on turning gear, what will it start as?

When a dead generator, which is a generator not producing electrical output, is accidentally energized while on turning gear, it will start functioning as an induction motor. This is primarily due to the characteristics of the generator's design and the conditions present during its operation.

In this scenario, when electrical power is supplied to the stator windings of the generator, it creates a rotating magnetic field. Since the rotor is at standstill, it does not yet have any induced voltage or electromotive force and cannot start generating electricity right away. Instead, the rotor will attempt to align itself with this rotating magnetic field, causing it to rotate and draw current.

Induction motors operate on the principle of magnetic induction, where the rotor receives its energy from the rotating magnetic field created by the stator. In this case, the energized generator behaves like an induction motor because it will try to rotate due to the magnetic field generated, leading to current being drawn from the power system.

This behavior contrasts with the other options provided. A synchronous motor requires synchronization with the electrical supply to operate effectively and would not start under the conditions described. A standard generator would not activate since it needs to already be operational to generate power, and a thermal generator refers to a type of power generation usually