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Do I need a special Transformer to put 240 VAC 3 phase into it and and get 480 VAC 3 phase out of it to run a machine? Or, do I just use an ordinary step down transformer and step up the voltage? Thanks
2 5391We know that, in case if there is a faulty insulation,or sc, the current is bypassed to earth through the earth wire that has low resistance.Actually, what will happen to that current that flows through gnd?In that case,if we come in contact with that faulty appliance, wont that current flow through us as we form a closed path by standing in gnd?Is grounding a safety measure?
3 6444Hai, I am from EEE branch.On feb 17 iam going to write an Exam for hindustan petrolium corporation Ltd.So plz send me the written exam pattern/Q's/interview questions.please mail to yuva_polisetti@yahoo.co.in
1811why we step down voltage level from 33kv to 11kv and 11kv to 415v.Instead we can step down voltage from 33kv to 415v directly using single transformer.
12 74466sir, I am from EEE branch.On feb 17 iam going to write an Exam for hindustan petrolium corporation Ltd.So plz send me the written exam pattern/Q's/interview questions.please mail to eee_dharmendra@yahoo.com
1840how can you prove that in CE configuration a transistor has 180 degree phase shifted output
Bhel,
5 15429hi frenz,its aswathy.i hve aplied for the hpcl test on feb,pls send the test patern & the placement papers as soon as possible. mail-id :kjaswathy@gmail.com
1787HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com
2262How can we measure and monitor critical performance parameters of Diesel Generator Sets, both electrical and engine ?
3 10494hi frnds.....anyone get any reply from HPCL. I HAVN'T.....B,COS written will b on FEB 17 th.
HPCL,
1 4688WHAT IS THE DIFFERENCE BETWEEN RESISANTANCE AND IMPEDANCE IF IMPEDANCE IS MORE THAN RESISTANCE AT SAME VOLTAGE CAN WE HAVE RELATION DERIEVED BETWEEN THEM
4 10619Post New Electrical Engineering Questions
If not into production, how far did you follow the design and why did not you see it into production?
circuit diagram of trip circuit supervision relay
Plz tell me how we can find that particular company has vacancy or not
what is the difference between 4pole & 6pole DC Motors & give advantage ?
What are the effects of electrical faults?
how to test reverse power trip?
After synchronization with grid what is the demand value QKVAR and how we will maintain that?
The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.
is it possible to say motor horsepower number without seeing name plate(when name plate damaged)
What is the problem of internal failure in ship engine telegraph system norcontrol?
What Is Sampling?
In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]
What is the emf equation of a transformer?
The height to which the liquid in a tank to be maintained for a certain constant velocity?
1))why we run three phase or three different circuit from a single conduit 2)) why not two circuit of different phase run in same conduit?? and why we run same three cicuit of same phae run in single conduit??
