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Point where BM (Bending Moment) changes between compression and tension or vice versa is known as:

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JKSSB JE CE 2021 Official Paper Shift 2 (Held on 27 Oct 2021)
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  1. Point of inflection
  2. Zero bending moment point
  3. Critical point
  4. Point of Contra flexure

Answer (Detailed Solution Below)

Option 4 : Point of Contra flexure
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Detailed Solution

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Concept:

  • In a bending beam, a point is known as a point of contra flexure if it's a location at which no bending occurs.
  • In a bending moment diagram, it is the point at which the bending moment curve intersects with the zero lines.
  • In other words where the bending moment changes its sign from negative (compression) to positive (tension) or vice versa.
  • A point of contra flexure occurs in the overhanging beam.

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