Answer / anil

In overhead cables, we donot require any cooling media as
air is cooling media. whereas in Under ground cables, in
pucca trench, we put sand around the cable before is it is
cemented.The reason for sand is that it absorb water and can
help in transmit the heat from cable.

Answer / k.prakashchandra

Sand remains in the form of loose grains forever,hence
location and removal of cable become easy.Overhead cables
require supporting structures and wires.

6. A DC AMMETER HAS R=0.1 OHM & CURRENT RANGE IS 0-100 A IF THE RANGE IS TO BE EXTENDED TO 0-500 A THEN METER REQUIRES SHUNT RESISTANCE OF ..........

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A 10 MVA, 66KV, 50Hz, Y-connected 3-phase alternator has synchronous reactance of 0.635 Ù. It is working at full load at 0.8 lagging p.f. condition. Find torque angle, neglect armature resistance.

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3 Answers  

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wat is the function of an inductor? examples.....

4 Answers  

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What are the basic component of a cro?

0 Answers  

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a 3 phase motor was running with delta connected, suddenly one phase winding got burnt off, what will be the effect ?

8 Answers   Bhel, RRB, SR,

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What are the factors influence the choice of an electrc drive?

0 Answers  

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please give me solution to rectify the emi(electromagnetic interference)

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please send me last 5 year interview questions

0 Answers   ONGC,

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How can we select a capacitor Bank.? i need a standard formula for that.?

3 Answers   ABB, Ace Info, HAL, IKK, MahaGenco,

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