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manoj8778
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Join Date: Aug 2012
Posts: 6

Find the Shortest Distance

09/21/2012 11:37 AM

A 120 wire cable has been laid firmly underground between two telephone exchanges located 10km apart.Unfortunately after the cable was laid it was discovered to be the wrong type, the problem is the individual wires are not labeled. There is no visual way of knowing which wire is which and thus connections at either end is not immediately possible.You are a trainee technician and your boss has asked you to identify and label the wires at both ends without ripping it all up. You have no transport and only a battery and light bulb to test continuity. You do have tape and pen for labeling the wires.What is the shortest distance in kilometers you will need to walk to correctly identify and label each wire & how?
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passingtongreen
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#1

Re: find the shortest distance

09/21/2012 11:44 AM

I presume these are special wires with zero electrical resistance.

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jesw55
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#2

Re: Find the Shortest Distance

09/21/2012 11:55 AM

How long before the homework has to be in?

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SolarEagle
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#3

Re: Find the Shortest Distance

09/21/2012 11:57 AM

20....

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lyn
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#4

Re: Find the Shortest Distance

09/21/2012 11:58 AM

Is this a joke? Homework? A question on a test? An interview question?

What is the point?

Does the ------- who spec'd the wrong wire still have a job?
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KJK/USA
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#6
In reply to #4

Re: Find the Shortest Distance

09/21/2012 3:39 PM

"-------" = Wireman

OR

= Lineman

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jack of all trades
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#12
In reply to #4

Re: Find the Shortest Distance

09/23/2012 3:45 PM

Does the ------- who spec'd the wrong wire still have a job?

Of course he does, he is the one getting his subbordinate to fix the problem.

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67model
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#5

Re: Find the Shortest Distance

09/21/2012 1:57 PM

Do you have

  1. a mate to work at the near end?
  2. A battery or telephone exchange supply?
  3. Two telephones?

Suggestion for 1/ is the bloke who ordered the wrong cable.
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Tornado
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#7

Re: Find the Shortest Distance

09/22/2012 12:14 AM

I think it has been around even since the 1960s or earlier, in Martin Gardner's "Mathematical Games" column in Scientific American magazine.

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pnaban
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#8

Re: Find the Shortest Distance

09/22/2012 1:17 AM

Sue the manufacturer/supplier to get wires numbered at his expense.Show him your codes regarding numbering cores for identification purposes.

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Tornado
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#9
In reply to #8

Re: Find the Shortest Distance

09/22/2012 11:08 AM

I'd rather walk 20 km than get involved in a lawsuit.

"I was only ruined but twice: once when I lost a lawsuit and once when I won one."
--Voltaire

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Ried
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#10
In reply to #9

Re: Find the Shortest Distance

09/22/2012 11:27 PM

LOL, good answer. I too would rather take the short 20km walk than deal with lawyers and a court room.

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pnaban
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#11
In reply to #10

Re: Find the Shortest Distance

09/22/2012 11:52 PM

Can't the state authorities take action against the manufacturer for manufacture/ marketing an item not conforming to codes/standards, if you report to them?.

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jack of all trades
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#13

Re: Find the Shortest Distance

09/23/2012 3:48 PM

It would be more of a challenge if the puzzle question was updated and the telecommunications cable was fibre optic.

What, you still have a light bulb don't you?

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Users who posted comments:

67model (1); jack of all trades (2); jesw55 (1); KJK/USA (1); lyn (1); passingtongreen (1); pnaban (2); Ried (1); SolarEagle (1); Tornado (2)

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