A cast iron T section beam is subjected to pure bending. For maximum compressive

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Question
A cast iron T section beam is subjected to pure bending. For maximum compressive stress to be three times the maximum tensile stress, centre of gravity of the section from flange side is
Options
A. h/4
B. h/3
C. h/2
D. 2/3 h.

Correct Answer

h/4

Strength of Materials problems

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2. The moment diagram for a cantilever carrying linearly varying load from zero at its free end and to maximum at the fixed end will be a
Options
A. triangle
B. rectangle
C. parabola
D. cubic parabola.

3. The effect of arching a beam, is
Options
A. to reduce the bending moment throughout
B. to increase the bending moment throughout
C. nothing on the bending throughout
D. ail the above.

5. A beam is said to be of uniform strength, if
Options
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.

6. If all the dimensions of a bar are increased in the proportion n : 1, the proportion with which the maximum stress produced in the prismatic bar by its own weight, will increase in the ratio
Options
A. 1 : n
B. n : 1
C. 1 :
D. : 1
E. 1 : n.

7. The areas of cross-section of a square beam and a circular beam subjected to equal bending moments, are same.
Options
A. circular beam is more economical
B. square beam is more economical
C. both the beams are equally strong
D. both the beams are equally economical
E. none of these.

10. For the same height, the bottom width for no tension,
Options
A. for triangular section is more than rectangular section
B. for rectangular section is more than triangular section
C. for triangular section is same as that of a rectangular section
D. none of these.

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