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last week we did the REF relay test by closing single pole (R phase) of CB and apply 380V at the primary of delta transformer. we get 33A at the primary of the R phase star end. but we get 380A at both R an B in delta side. how and why?
1 3688When i went to a interview the interviewer ask me a question for that i cant able to answer him if anyone knows answer me How will you design a capacitor bank for a plant? if my p.f is 0.6 i have to improve it to 0.9 or 1 what kind of steps i have to do? and is there any formula for calculating this?
2 5143When i went to a interview the interviewer ask me a question for that i cant able to answer him if anyone knows answer me How will you design a capacitor bank for a plant? if my p.f is 0.6 i have to improve it to 0.9 or 1 what kind of steps i have to do? and is there any formula for calculating this?
6 8617What are the solutions for avioding sulfide formation at bimetalic (Copper &Aluminium)overhead joints?
HAL,
2 5150In three pin socket normally three pin in between three pins earthing point is more thickness why?
6 13792the distance from my office to d.g is aprox 400mtrs and voltage drops ibn my office near about 40 volt what should i do p[ls suggest.
4 5628Post New Electrical Engineering Questions
is that a problem if i connect a single phase load to a secondry delta connected transformer but i get a neutral from other transformer i the system?
What conditions are required for transformer to operate at low frequencies ?
Explain advantages of storage batteries
Why sometime AVR and sometime Booster coil is used in Alternator? what is the diferance between AVR & Booster coil due to which they are selected
where solid grounding and where grounding through ngr done and why?
How does a tertiary winding filter harmonic(espcially 3rd one) from entering into load system?
Types of test in Switchgears, MCC, NGR and DB's how it should be procced. Can anyone give me the details here or email me to pasuvaraj.k@gmail.com
On what basis the the size of Lightning arrester for buildings are selected ?
Dear sir, iam completed iti ncvt electrician 2000-2002 & diploma electrical eng completed 2008-2010 distance education in rvd university, still i got B licences only but my working company want C licences, how to i get c licencese pls reply me iam in critical situation thank you karthick 9841637803
what is mean by dual digital protection in the relay field?
why connecting surge unit in contactor coil
what is the Earth Voltages in Power Plants, Sub-stations, Industries, Residential & Commercial Buildings.
What happens if we connect a single phase energy meter in reverse polarity.
What are the main significances of root locus?
For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?
