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? Thanks2 2656
what is the principle of vvvf drive motor3 25409
We 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 3374
Hai, 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 firstname.lastname@example.org
why 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 52614
sir, 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 email@example.com
how can you prove that in CE configuration a transistor has 180 degree phase shifted output
hi 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 :firstname.lastname@example.org
HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS email@example.com,firstname.lastname@example.org
How can we measure and monitor critical performance parameters of Diesel Generator Sets, both electrical and engine ?3 6948
hi frnds.....anyone get any reply from HPCL. I HAVN'T.....B,COS written will b on FEB 17 th.
what is the maximum genarating in india?17 29554
WHAT IS THE DIFFERENCE BETWEEN RESISANTANCE AND IMPEDANCE IF IMPEDANCE IS MORE THAN RESISTANCE AT SAME VOLTAGE CAN WE HAVE RELATION DERIEVED BETWEEN THEM4 6499
How to calculate D.C load current?3 26914
Efficient electrical earthing in hard rock area
differnce between single acting and double acting solenoid valves
what is JE exam?
what about the power of wattmeter at starting and loding?
what is the criteria for selecting fuse rating in 1phase, 2phase & 3phase welding sets?
why we testing the core balance of the transformer before comissioning?
Is it advantages of having star-delta vfd than normal star vfd , if yes why?
Difference between rating factor of cable and derating factor of cable?
what is the difference b/w UHVDC and HVDC(LIGHT)?
while doing high voltage test on 11kv/433 distribution transformer why we only give 28 kv on hv side and 3kv on lv side for power transformers what is the value what factors it depends
How can we choose the rating of submersible motors
How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?
how the CT and PT is connected in the circuit during testing of transformer explain with diagram
What will happend if given Vfd out put to step up transformer
hi, i have 3x200KVA and 2 x 80KVA UPS with battery bank of 150AH 68Nos. and 100AH 204Nos., i need to install AC either ductable or PAC type, so can you help me to calculate heat load and capacity of the AC to install.