Answer / subra

DC system also earthed,
In Tele communication equipments are working in 48V dc system
In this DC system positve is directly Grouded( earthed )
Normally this system is called -48v DC system

Answer / ramprasad

DC has no Leakage current but AC has because there are 3
phases in AC and one common neutral points in AC star
connection

Why we use ups battery and dsdb battery in thermal power plant

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I am shobana from Chennai. I am having my personal interview on 19th Dec at Chennai.kindly mail me the questions to mail id shobana.shanthi@gmail.com

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Why annealing is done on transformer core manufacturing process?

1 Answers   ISRO,

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