Answer / niyaj

PLC is a control device .It Should not monitoring the
process.and SCADA is graphical monitoring device it should
not process any control activities.SCADA interface with PLC
for real time Control & Monitoring purpose.

how rated the neutral voltage of transformer and reactor, e.g. 400/220, 200MVA transformer have neutral voltage of 33kv. and reactor voltage 145kv. how this rating decided?

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can we say current flows inside an atom as electron moves inside an atom?

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