how to design domestic earthing pit and earthing wiring?

1 Answers  

---

1.why are not using acb 33kv ht side? is there any problem 2.what is difference between acb,vcb,sf6 breackers? 3.what is the function of invertor and convertor in ups?

0 Answers   L&T,

---

which of the folowing has negative temperature coefficient of resistance? a. mercury b. copper c. lead d. carbon

2 Answers  

---

in flemings lefthand rule thumb indicate for....

2 Answers   APPSC,

---

what is efficient motors and how it is different from normal induction motors

0 Answers   Sarthak Contracts,

---

Don't you have similar question banks related to Oral Certification Examination conducted by Mercantile Marine Departments / Directorate of Shipping, Ministry of Shipping for Electro Technical Officer?

0 Answers   Bernhard Schulte Shipmanagement,

---

What is the Derating factor of power cables when exposed to direct sunlight in (both PVC & XLPE).

1 Answers  

---

while we select CT, why the CT ratio is divided by 5?? ex:250/5,15VA,CLASS-1 CT.Why it is divided by 5??Help me please

2 Answers  

---

When and where resistance earthing is used ? How to calculate the time constant for earth fault

0 Answers  

---

how is capacitor bank look like

0 Answers  

---

if in 3-phase system voltage=440V,frequency=60Hz, current=400A. then if it is single phase then current=? and if it is single phasing then current=?

0 Answers  

---

What is a soft start?

4 Answers  

---