Answer / n.dhanasekaran

Each and every power semiconductor device having a specific
range of switching frequency or operating frequency. it
depends upon manufacturing. in datasheet, i will be given.
Depends upon the input voltage, current or power and
frequency, we should choose the device.
eg., for low frequency and high power circuits, SCRs are
preferred.for low power and high frequency, IGBTs,GTOs are
preferred.

how did i get the competency certificate as electricle supervisor. iam completed my b.tech.but i dnt have any experince, this certificate is required for applyng ongc mangement trainees. what should i do sir please suggested me

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