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While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x
1935if 11 lead acid batteries each 200 amph are connected in series so that combinly they can produce 110 volts dc. question is how much backup it can provide ? 2) how can we calculate that how much amprere and voltage is required to charge them . thanks in advance !
1 3548why neutral and earth should not be connected on 3 phase 440v/50c/s supply at consumer side. where as on 25kv/ac/50c/s railway traction substation neutral and earth will be connected and track at substation. and track will act as neutral and earth. Reasons for this is needed urgently
4 9061Why Nutral CT rating for Earth Fault Protection of Transformer neutral shall be 20% of Full load Current of Transformer
2 4986Hi all, please could anybody give me a suggestion about Electrical designs and calculations .. what text book should i follow as i am a trainee engineer and here work going not so favorable to me so please help me friends .. A small discription about my work which is going here is all about Electrical designs like cable sizing, lighting, lightning, Gensets sizing, motor sizing, transformer sizing, generator sizing, circuit breakers, PDB MCC PCC SLDB MLDB panels, Single line diagrams mainly, substation desings, cable routing and layouts, reactive power compensations, power factor improvement, voltage drop calculations, power generations, power transmission, power distributions all calculations i need .. please please if anybody experienced with this problem and got a solution then please help me .. just i need an apt text book for these all calculations and designs ..
1846suppose a fan is running with phase and neutral. if its neural is touched to body. then fan get stopped. if this fan is connected to phase and ground supply..then why it runs?
1 4372Post New Electrical Engineering Questions
please send 5yearje solved papers on my email himmatsinghnathawat@gmail.com
after how many spot we must chang secondry cable in portable spot welding gun?
How can I calculate ISF of current transformer?
What Maximam Gap Taibaar & Bush
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given data are load current & power factor cable core size? plz any one update the calculation formula
can i connect wavetrap in 2 different phase in EHV line?
what is the relationship between phase & neutral
what mean by analog ,digital,numerical meters and relays? say the example?
what is basic difference betmeen normal & flame proof motor??
What are the conditions to be satisfied for parallel operation of dc generators?
Define peak time.
what is destructive and non-destructive testing of welding
what is the difference b/w UHVDC and HVDC(LIGHT)?
