Answer / sewagudde

the automatic voltage regulator (AVR) senses changes in
voltage and sends a signal to the controller on the tap
changer to either raise or lower the tap.it should be noted
that the tap changer is always located on the HV side of
the transformer inorder to interrupt smaller currents as
compared to the LV side

Answer / debasis

There is controler which sence the voltage & give command
to a stepper motor that how many step(s) & what direction
have to go for achiving the required voltage.
And the changeover held inside a oil chamber to avoid
sparking.

What is fault.?

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All the voltage drops and the source voltage added together in a series circuit is equal to

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Dear sir, I completed DECE In the year 1995.Now i am working in a private company from last 10 years as an Electrical supervisor.The company having a 1000 KVA transformer.Now i try to apply "C" Licence. I am eligible or not.If not eligible,pls give solution.

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Why HT motor is connected in Star?

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Will sag depends on the Specific Resistance of the conductor?if not Why??????????

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what is high - pot test. what's its use?????

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