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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 5370We 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 6440Hai, 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
1807why 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 74419sir, 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
1835how can you prove that in CE configuration a transistor has 180 degree phase shifted output
Bhel,
5 15406hi 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
1783HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com
2253How can we measure and monitor critical performance parameters of Diesel Generator Sets, both electrical and engine ?
3 10478hi frnds.....anyone get any reply from HPCL. I HAVN'T.....B,COS written will b on FEB 17 th.
HPCL,
1 4677WHAT IS THE DIFFERENCE BETWEEN RESISANTANCE AND IMPEDANCE IF IMPEDANCE IS MORE THAN RESISTANCE AT SAME VOLTAGE CAN WE HAVE RELATION DERIEVED BETWEEN THEM
4 10608Post New Electrical Engineering Questions
how we can calculate the efficiency of a diesel generator ?
What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
Is it possible to obtain 480v or 550v in single phase output by giving the input to 230v to a single phase torodial type transformer without using a stepup transformer?
What is an order of a system.
how we arrange the hv side with delta connection in case 33/11kv of transformer.
what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator
i want to know how to determine that a surge arrester work properly in 11kv system. and how to test a 12kv surge arrester
Write down the design procedure of commutaj.
I WANT HOW CALCULATE TO CABLE FOR WELDING PLANT ?
when measure the core loss of three phase distribution transformer or three phase reactor loss, one phase shown negative watt loss. why??
what is the internal working of star delta starter
who can measure the size of power cable?
neutral earth resistance testing is it possible for transformer while in load condition
WHERE NEUTRAL WIRE IS CONNECTED AT DOMESTIC TO TRANSMISSION LINE(SINGLE PHASE TO THREE PHASE)
