Answer / deep

to dry the surface and earthing purpose.

Answer / abhishek goyal

It reduce the dryness of surface inside soil so earthing
will be less than 1ohm. It will also good for insulation at
transformer yard, if some one work on it during the raining
season.

Answer / ramiz raza

to reduce the step potential and touch potential.....in short for protection against shock...

Answer / srinivas

The main purpose is easy to findout oil leaks in transformer and avoid useless plants on the surroundings and also increase the dryness in rainey season.

what is relay

15 Answers   HPCL, IOCL,

---

Electrical breakdown strength of an insulating material depends on............?why because?

2 Answers  

---

Why does the power consumed is always constant even if a fan speed is altered?

4 Answers  

---

What is the difference between CT for protection and Ct for metering?

16 Answers   BirlaSoft,

---

why capacitors cant used in genset to maintain power factor..??

2 Answers  

---

what is multiplying factor of a energy meter connected with a CT ratio of 600/5 and voltage at 415 volts.

1 Answers  

---

why universal motor work on ac & dc both?

1 Answers   EMC, emc2,

---

what is slip resistance? how much its value in 110 kw motor? why voltage is varied in vvvf drive ?

1 Answers   Reliance,

---

How earthing of switchgear system to be done.

0 Answers   KSEB, L&T, Siemens,

---

If induction motor load is incresed motor speed decrases.But in syncronous motor load incrases speed canstant why?

5 Answers  

---

can any one tell me the formula for calculating the power and unit consumpetion

9 Answers   Avalon,

---

How many battery required for an 3kva online ups with 3 hrs back up with usage of 3 fans,3tube lights

1 Answers  

---