WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION?
Answer Posted / cnu
Basically a device is earthed to avoid any stray
circulating current that appear on the body of the device
operating with an AC supply.
since AC creates an alternating flux. this changes in flux
induces stray currents in the metallic body of the devices.
When coming to DC, since it is a constant voltage it does
not produce flux change to induce any currents so earthing
is not required for a DC battery.
Is This Answer Correct ? | 15 Yes | 3 No |
Post New Answer View All Answers
Why the cores of large transformers build up of circular cross section?
what is the significance of cabability curve of alternator
what is the difference between fault current ant short circuit current?
what is the saturation point of crgo lamination.
WHY L-G FAULT IS MORE SEVERE IN TERMS OF RRRV?
operation of protection relay watchdog contact?
Transformer diagram mention each parts ?
What is the unit of attenuation?
5.WHICH TYPE WELDING PROCESSES USES NON CONSUMABLE ELECTRODE.........
hi friends this is a newcomer in your community of enthusiastic peoples. i am preparing for SSC (CPWD JUNIOE ENGG EXAM FOR ELECTRICAL) pls guide me on the same how to crack it? PLS LET ME KNOW IS ANYONE THERE WHO PASED IT? CAN I GET THE QUESTION PAPERS OF PREVIOUS EXAMINATIONS?
What are the effects of electrical faults?
how indusrial diesel generator work
Tell me the reason of connecting domestic t/f primary in star or delta,and also secondary side.
give single line diagram of D.G distribution form alternator to main L.T panel?
what are the applications of TIG welding