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please tell me how a surge protector work on a DC 48Volt.? please describe briefly.
why booster transformer is used in sumpners test conducted on transformer????
what is the meaning of 0.5ohm Resistance
How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?
Why back emf used for a dc motor? Highlight its significance.
How to decide no. of Step and Kvar for APFC Panel 40 kvar MD: 33.12 KVA Avg pf : 0.8540
1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.
what are the dimensions for 200 kva transformer plinth (plateform),in which pcc m20 is used..
please give me all the Alarm .Trip ,Safety Relays & Conditions of UPS Systems mail me on ashokbabunhce@gmail.com
What is the source of dependent source ?
Why field rheostat is kept in minimum position?
why core is useful for a transformer ?and also in its operation ?
Motor,transformers,capacitor tubelight etc....
with help of neat sketch explain principle of TIG welding process
How to set a Zone 1 distance relay for distribution feeder?