What will be the maximum sag if working tension is 4000 kg, resultant force per meter length of conductor is 2 and span length is 320 meter?

This question was previously asked in
LMRC JE EE 2018 Official Paper (Held on 13 May 2018)
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  1. 10.2
  2. 6.4
  3. 3.2
  4. 9.6

Answer (Detailed Solution Below)

Option 2 : 6.4
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Detailed Solution

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The correct answer is option 2): 6.4

Concept:

Maximum Sag (S)  =Wl2 / 8T

Where

W = weight of conductor per meter length in Kg per meter

l = Span length in meter

T = Working tension in Kg

Calculation:

Resultant force per meter length of conductor = Weight of conductor per meter length

W = 2 kg/m,

T = 4000 kg,

l = 320 meters,

\(S = \frac{{2 \times {{320}^2}}}{{8 \times 4000}} = 6.4\)

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