why is the core of the underground cable is spiral in shape instead of straigh

Categories >> Engineering >> Electrical Engineering
Suggest New Category

why is the core of the underground cable is spiral in shape
instead of straight?

Question Posted / ranga

8 Answers
7908 Views
Mecon, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

why is the core of the underground cable is spiral in shape instead of straight?..

Answer / shahin

Rolling is one of the fact....
But the main reason for spiral is mechanical.
In straight wire the share force is less than that of
spiral wire. hance the spiral wire's strength is too much
higher than straight wire.......this is the main fact....

Is This Answer Correct ?

5 Yes

0 No

why is the core of the underground cable is spiral in shape instead of straight?..

Answer / phani

If it is spiral , the electrical losses are less ( i don't
know exact losses but i can confirm that it is not for easy
to rolling)

Is This Answer Correct ?

2 Yes

2 No

why is the core of the underground cable is spiral in shape instead of straight?..

Answer / yogan

to produe an inductane effect.

Is This Answer Correct ?

2 Yes

2 No

why is the core of the underground cable is spiral in shape instead of straight?..

Answer / ashok bhatnagar

The spiraling is done to transpose the three phase current
carrying conductors. This results in near zero net magnetic
field produced by the cable. This is required to minimise
electrical interference to other naerby cables.

Is This Answer Correct ?

0 Yes

0 No

why is the core of the underground cable is spiral in shape instead of straight?..

Answer / kishor bankar

Under ground cable should be in spiral in shape
insteed of straight,because in staight position there is
formation of capacitance,so charge will develop on core,
due to this cable will be heated.
Also to avoid transposition effect cable should be
run in straight shape in underground.

Is This Answer Correct ?

0 Yes

0 No

why is the core of the underground cable is spiral in shape instead of straight?..

Answer / hare

TO avoid Eddy current losses

Is This Answer Correct ?

0 Yes

0 No

why is the core of the underground cable is spiral in shape instead of straight?..

Answer / rk

For flexibility & easy handling to roll over or for laying.

Is This Answer Correct ?

1 Yes

5 No

why is the core of the underground cable is spiral in shape instead of straight?..

Answer / justin xavier

if it is straight it is very difficult to role in cable
drum thats y it is spiral

Is This Answer Correct ?

0 Yes

6 No

Post New Answer

More Electrical Engineering Interview Questions

Which pump set is more suitable and economical for liftingwater from 300Mtr borewell? A. Compressor Pump B. Submersible Pump C. Jet Pumps D. 25HP Centrifugal Pump Q. from PSC Test 22-11-2008 Meter reader

8 Answers

What is the current carrying capacity of 35sq.mm flexible cable?

0 Answers

what is the capacity of storing mass electricity.

1 Answers

what is AVP?

2 Answers

what is the different between HT auxillary relay resistance and transformer tripping relay resistance?

0 Answers

Why do we use only Sinusoidal Wave in AC supply why not the Square,Triangle or Sawtooth etc?

2 Answers

Why (In India) we preferably go for +-30 deg connection of transformer? what are the advantages in this connection?