Answer / asmita

Gravels/metal is used in T/F yard for following purposes-
1.For providing gd earthing as it prevents growing of gross.
2.it prevents travelling of creatures like snake,rats etc
which may result in Short ckt if touchd live parts.
3.In case of oil leakage from C.B.it is well distributed
due to metal n doesnot result in fire.
4.Reason of Step potential n touch potential.

Answer / varun kumar

gravel surface increases the safety limit for touch and
step potential and hence our same design of earthing grid
becomes more safer.

Answer / farhan

ans. 5 countinued and also when the heavy raining water can
suc not stored on floor.

Answer / k.vijayakumar

Gravels having good earthing resistance, So that only we
have used for the same.

Answer / rakesh

gravels are used because gravels have less resistance due
to which it is very effective for earthing.

Answer / s.karthik

The gravels mainly serves two purposes,

since the core of the transformer experiences high
mechanical stresses which makes the transformer core vibrate
coz of which the complete apparatus vibrates,the poured
gravel absorbs these vibrations.

Secondly,the gravels provides a good earthing path for the
transformer.

What are the types of power in electrical power?

0 Answers  

why the the electrical machine coil are damage ? How to prevent it?

2 Answers  

How to find out freqency in Ac and Dc and also how u control it

2 Answers   MacLellan,

what is the principal of braker

4 Answers  

Dear,  How much ph is maintained of water electrolite used in lrs for slipring induction motor ?

1 Answers  

how to calculate earth fault relay current and CBCT ratio

0 Answers   ONGC,

Why the earth terminal pin is larger than phase and neutral in three pin plug top>

8 Answers   TVS,

now-a-days which devices are using for converter

7 Answers  

Difference between transmission line and cable?when ever a large water channel has to crossed it is easier to use cable then transmission line why?

1 Answers  

what is the difference between power and distribution transformer?

32 Answers   L&T, VJTI, Wenke Electricals,

What is the problem of internal failure in ship engine telegraph system norcontrol?

0 Answers   SAR,

How to select KW/HP rating of motor for particular application? Is there any relationship od RPM?

1 Answers