why we use star and delta connection?why we donot give the supply directly?

12 Answers   Hitech, Siemens, Tata Steel Limited,

---

Dear Sir/Madam, I have one questions we have three steam turbines and one Gas turbine and our industry linked with the public network, we have protection system one of the protection is reverse power we can export just four MW only i would like to ask about how to calculate the reverse power. Thank you in advance best regards

0 Answers  

---

PLease anyone can tell me CTUM-15 specification?

1 Answers   Gilbert Maxwell,

---

Hi.. I am a BE GRaduate in E&E. I have 8.5 Experience in Tendering & Estimation field. I have done SAP SD course few years back. But due to some reason i failed to get job in that field and continued my own field. Now I am thinking of changing into SAP seriously. How should i go ahead???

0 Answers  

---

model question paper for supervisor trainee

0 Answers   Bhel,

---

---

why transformers are rated in KVA

3 Answers   AITM,

---

What is the difference between electronic regulator and ordinary electrical rheostat regulator for fans?

0 Answers  

---

What is difference between Dy11 & Dyn11 vector group transformer. Can both these transformers operate in parrallel.

5 Answers   Jaypee, JOY,

---

The current though a branch in a linear network is 2A when the input voltage is 10 volts. If the voltage is reduced to 1 volt, and the polarity is reversed, what is the current flowing through the branch ?

2 Answers  

---

1.After synchronising the alternator to the grid,how we r delivering power to the grid?if the i/p increases does the speed hence frequency increases? 2.y the power factor is changing when exitation changes?what is the relation with p.f and flux?

4 Answers   BSNL,

---

RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV is ok ,but haw to calculate the KA rating?

0 Answers  

---

what is the meaning of insulation level?

2 Answers  

---