Why there are semi conductor layers on conductor and XLPE insulation of HT cables

1 Answers  

---

what is necessity of using isolation transformer?

4 Answers   NTPC,

---

If the positive terminal of batteries in 125 v dc system is connected to earth what will happen ?

4 Answers  

---

Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example?

0 Answers  

---

difference b/w semiconductor and dielectric

2 Answers  

---

How voltage regulation is calculated for over head transmission line? What do we mean by Conductor constant while calculating voltage regulation? how it is differ for for diffrent type of conductor say AAAC DOG & AAAC RACOON conductor?

3 Answers   ABB, AES,

---

inductance and capacitance may result in periodic reversals of the direction of energy flow,how???

1 Answers  

---

We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?

0 Answers  

---

are there rmu for 3 transformer?

0 Answers   OSC,

---

Why earthing done?

1 Answers   CBRE,

---

HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com

0 Answers  

---

If u take a kWh reading in 11 kV HT and 440 LV side at same time in yesterday today , then why LT consumed units 3-4℅ high as compared to HT units

1 Answers   Brigade,

---