Rectifiers and Converters
A synchronous converter can be started

by means of a small auxiliary motor
from A.C. side as induction motor
All of the listed here
from D.C. side as D.C. motor

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Rectifiers and Converters
On which of the following factors the number of phases for which a rectifier should be designed depends?

The power factor of the system should be high
The voltage regulation of the rectifier should be low
All of the listed here
In the output circuit there should be no harmonics

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