What is the difference between IS:1554 (Part 1)/1988 & IS:694/1990 ? What do these two standards specify about?

2 Answers  

---

what will happen if we give a dc supply to a transformer.?

10 Answers  

---

PLC Training in chennai | PLC Training institute in chennai, PLC Training center in chennai | Best PLC Training in chennai | PLC Training course in chennai | SCADA Training in chennai | PLC Training in india

1 Answers   Exide,

---

Actually I have a doubt on neutral and earth.we use Ac power without taking neutral by connecting to earth,but at that time does it affects on efficiency of any electrical components or no? If yes how?

0 Answers  

---

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 :kjaswathy@gmail.com

0 Answers  

---

---

Which type of power plant is more easier to produce electrical power at economical condition?

5 Answers   HAL,

---

explain in detail HV & LV bushing connection in power transformer (110 / 11 kv 16 MVA)

6 Answers   TNEB Tamil Nadu Electricity Board, wbsedcl,

---

how to differentiate a mpcb,mcb with a contactor? Explain their working operation

0 Answers   L&T,

---

What is Servo Ventilated Motor?

0 Answers   L&T,

---

How can we check ELCB trip current sensitivity How can we check earth resistance value

2 Answers  

---

Sir we have 12.5 MVA(110/11KV) transformer (Y-Y) connected,which tripped showing earth fault,when we charged transformer it stood OK ,but on connecting 11 KV feeders it tripped showing earth fault.our service engineers found that the B phase and R phase phase connecting to neutral broken from HV OLTC(on load tap changer),and R phase and Neutral is ok.Dissolved gas analysis shows that accetline content is high,tan delta value is 12.My dout is it is an internal fault of transformer,why REF or diffrential relay is not acted?

1 Answers  

---

what is the use of spst switch in performing experiment on self excited dc motor?

2 Answers  

---