A body is subjected to a tensile stress of 1200 MPa on one plane and another ten

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Question
A body is subjected to a tensile stress of 1200 MPa on one plane and another tensile stress of 600 MPa on a plane at right angles to the former. It is also subjected to a shear stress of 400 MPa on the same planes. The minimum normal stress will be
Options
A. 400 MPa
B. 500 MPa
C. 900 MPa
D. 1400 MPa

Correct Answer

400 MPa

Strength of Materials problems

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3. A beam of uniform strength may be obtained by
Options
A. keeping the width uniform and varying the depth
B. keeping the depth uniform and varying the width
C. varying the width and depth both
D. any one of the above

4. When one plate overlaps the other and the two plates are riveted together with two rows of rivets, the joint is known as
Options
A. single riveted lap joint
B. double riveted lap joint
C. double riveted single cover butt joint
D. double riveted double cover butt joint

6. When a circular bar tapering uniformly from diameter d₁, at one end to diameter d₂ at the other end, is subjected to an increase in temperature (t), then the thermal stress induced is (where ? = Coefficient of linear expansion, and E = Modulus of elasticity for the bar material)
Options
A.
B.
C.
D.

10. The shear force and bending moment are zero at the free end of a cantilever beam, if it carries a
Options
A. point load at the free end
B. point load at the middle of its length
C. uniformly distributed load over the whole length
D. none of the above

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