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.

which is better ac or dc?

2 Answers  

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one conductor length is L.and i am strech uniformly this conductor and made length is 2L.so resistance of this strech conductor is R=4R..but i want to know about area of stech conductor hows it become a/2..

0 Answers   Infosys, ME,

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when generator of a power plant is not connected to grid , by increasing the mechanical torque speed of rotor increases but when it's connected to load instead of increase in speed current increases , why?

1 Answers  

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How would u describe the function of a generator & motor?

5 Answers  

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what is proper capacitor placement? How to evaluate capacitor size?

0 Answers   CPCL,

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in an industrical wiring, why we are using lighting DB and Power DB separately?

3 Answers  

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what do u mean by starting torque? how it should be for a good motor? what is the relation between starting torque and power factor? What is the relation between efficiency and starting torque?

2 Answers  

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what is meant by power and distribution transformer ?

0 Answers   CG,

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How to calculate the average power factor in 3 phase unbalanced system

5 Answers   Bhel, MacLellan,

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What does substation operator do in substation?

2 Answers   ABB,

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Why do we perform an open-circuit test and short-circuit test on the transformer?

0 Answers  

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What is the difference between INVERTER and UPS?

7 Answers  

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