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This set of Structural Mechanics Multiple Choice Questions & Answers (MCQs) focuses on Structural Mechanics Set 5
Q1 | The moment of inertia of a body is always minimum with respect to its
- Base
- Centroidal axis
- Vertical axis
- Horizontal axis
Q2 | Moment of inertia is the
- Second moment of area
- Second moment of mass
- Second moment of force
- All of these
Q3 | In a simply supported beam carrying a uniformly distributed load W/m over the left half span, the point of contra flexure will occur in
- Left half span of the beam
- Right half span of the beam.
- Quarter points of the beam
- Does not exist
Q4 | A sudden increase or decrease in shear force diagram between any twopoints indicates that there is
- No loading between the two points
- Point loads between the two points
- U.D.L. between the two points
- None of these
Q5 | When the bending moment is parabolic curve between two points, it indicates that there is
- No loading between the two points
- Point loads between the two points
- U.D.L. between the two points
- Uniformly varying load between the two points
Q6 | In Fig.(a), max B.M. will be
- 40 kN-m
- 50 kN-m
- 60 kN-m
- 80 kN-m
Q7 | In Fig. (a), slope of S.F.D. between B and C will be
- Zero
- 10 kN
- 15 kN
- 20 kN
Q8 | What is the bending moment at end supports of a simply supported beam?
- Maximum
- Minimum
- Zero
- Uniform
Q9 | What is the maximum shear force, when a cantilever beam is loaded withudl throughout?
- w×l
- w
- w/l
- w+l
Q10 | Sagging, the bending moment occurs at the of the beam.
- At supports
- Mid span
- Point of contraflexure
- Point of emergence
Q11 | What will be the variation in BMD for the diagram? [Assume l = 2m].
- Rectangular
- Trapezoidal
- Triangular
- Square
Q12 | What is the maximum bending moment for simply supported beam carrying a point load “W” kN at its centre?
- W kNm
- W/m kNm
- W×l kNm
- W×l/4 kNm
Q13 | How do point loads and udl be represented in SFD?
- Simple lines and curved lines
- Curved lines and inclined lines
- Simple lines and inclined lines
- Can’t represent any more
Q14 | curve is formed due to bending of overhanging beams.
- Elastic
- Plastic
- Flexural
- Axial
Q15 | The relation between slope and maximum bending moment is
- Directly proportion
- Inversely proportion
- Relative proportion
- Mutual incidence
Q16 | What is the SF at support B?
- 5 kN
- 3 kN
- 2 kN
- 0 kN
Q17 | Where do the maximum BM occurs for the below diagram.
- -54 kNm
- -92 kNm
- -105 kNm
- – 65 kNm
Q18 | Shear force is unbalanced to the left or right of the section.
- Horizontal force
- Vertical force
- Inclined force
- Conditional force
Q19 | SI units of shear force is
- kN/m
- kN-m
- kN
- m/N
Q20 | Determine the moment at fixed end.
- 40 kNm
- 50 kNm
- 60 kNm
- 80 kNm
Q21 | Shear force diagram is representation of shear force plotted as ordinate.
- Scalar
- Aerial
- Graphical
- Statically
Q22 | Hogging is
- Negative bending moment
- Positive shear force
- Positive bending moment
- Negative shear force
Q23 | At the point of contraflexure, the value of bending moment is
- Zero
- Maximum
- Can’t be determined
- Minimum
Q24 | Positive/negative bending moments occur where shear force changes its sign.
- Minimum
- Zero
- Maximum
- Remains same
Q25 | Shear force of following diagram
- Rectangle
- Square
- Circle
- Trapezoidal