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Mechanical Engineering Objective Questions { Strength of Materials }



22.  The shape of the bending moment diagram over the length of a beam, having no external load, is always
A. linear
B. parabolic
C. cubical
D. circular.
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23. The shape of the bending moment diagram over the length of a beam, carrying a uniformly distributed load is always
A. linear
B. parabolic
C. cubical
D. circular.
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24.  The shape of the bending moment diagram over the length of a beam, carrying a uniformly increasing load, is always
A. linear
B. parabolic
C. cubical
D. circular.
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25. The maximum bending moment due to a moving load on a simply supported beam, occurs
A. at the mid span
B. at the supports
C. under the load
D. anywhere on the beam
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26.  For a simply supported beam with a central load, the bending moment is
A. least at the centre
B. least at the supports
C. maximum at the supports
D. maximum at the centre.
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27.  The bending moment is maximum on a section where shearing force
A. is maximum
B. is minimum
C. is equal
D. changes sign.
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28. A beam is said to be of uniform strength, if
A. B.M. is same throughout the beam
B. shear stress is same throughout the beam
C. deflection is same throughout the beam
D. bending stress is same at every section along its longitudinal axis.
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