A simple Ge n-i-n photo-detector sample has a length ofL=30 pm and a hole lifetime of 49p. Ifa voltage of 2 V is applied across the detector length, at 300 K the detector gain at the applied voltage will be:

Q: This is an electrical engineering question. It belongs to microelectronics and material processes.

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Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.