Can anyone tell me some hints about what type of questions are asked by the interviewer by an Electronics engineer when company is installing an IPP and wants a team of engineers?

0 Answers  

---

Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1.  H1-H2 = H2-H3 H3-H1 2.  H2-H3 = H3-H1 H1-H2 3.  H3-H1 = H1-H2 H2-H3 For the LV side also: 4.  X1-X0 = X2-X0 X3-X0 5.  X2-X0 = X3-X0 X1-X0 6.  X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0  H2-H0  H3-H0    X0-X1  X0-X2  X0-X3 128.0  119.9  7.2      29.2   13.3   15.8 70.7   128.4  59.2     23.4   22.0   3.6 7.2    120.1  128.1    13.4   29.3   15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?

0 Answers  

---

I have 200 KVA Isolation Transformer for UPS input side. & ups was having 48% load, suddenly got short what will be the reason.

1 Answers   Mukand,

---

1.what is electricity 2.what is electronice 3.how many modules 4.five electrical component with symbol 5.five electronice componene with symbol 6.how convert 220v.A/C to 24v/DC 7.220V.WAIRING DIAGRAM OF AMMETER/VOLTMETER/OHMMETEER

1 Answers   Hatsun,

---

Why do we generate 3 Phase AC Supply? It is possible to generate 4 Phase and 5 Phase explain it?

3 Answers  

---

why secondary of open delta pt (two element pt) centre tap is earth what happen when this earth is removed

1 Answers   Essar,

---

we all know that both the generator and motor are electromechanical conversion devices.....then why we rate motor in kw and generator in kva????

4 Answers   KSEB,

---

What are the advantages of speed control using thyrister?

6 Answers  

---

why electric shock due to dc is dangerous than that of ac

44 Answers  

---

what is the difference between rccb and elcb?

1 Answers  

---

what is the bus bar size of 2700 amp ACB breaker ? and what is the cable size ?pls detailed answer ?

3 Answers  

---

How earth resistance reduses by pouring water coal and salt?

4 Answers  

---