At hinge in a beam 

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WBMSC Sub-Assistant Engineer (Civil) 05 Jun 2022 Official Paper
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  1. BM is zero 
  2. BM is maximum 
  3. SF is zero
  4. None of these

Answer (Detailed Solution Below)

Option 1 : BM is zero 
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Detailed Solution

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Concept:

The moment at internal hinge and hinge roller supports is zero

This is because hinges, internal hinges and roller supports have only two reaction i.e. vertical and horizontal reactions. Hence, they cannot transfer moment due to which the structure has zero strains due to bending stress at hinge locations.

Below are the figures which show force analysis of different cases having zero bending moment:

F2 N.M Madhu 23.03.20 D2

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