The maximum magnitude of shear stress due to shear force F on a rectangular sect

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The maximum magnitude of shear stress due to shear force F on a rectangular section of area A at the neutral axis, is
Options
A.
B.
C.
D.

Correct Answer

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1. The tangential component of stress on an plane inclined ?� to the direction of the force, may be obtained by multiplying the normal stress by
Options
A. sin ?
B. cos ?
C. tan ?
D. sin ? cos ?
E. sin²?

3. Pick up the correct statement from the following:
Options
A. The bending moment which when acting alone would produce the maximum stress equal to the major principal stress caused by combined bending and torsion, is called equivalent bending moment
B. M_cg = (M M² + r²) where letters carry their usual meanings
C. T_cp = m² + T² where letters carry their usual meanings
D. The torque which when acting alone would produce maximum shear stress equal to the maximum shear stress caused by the combined bending and torsion, is called equivalent torque
E. All the above.

5. Two bars, one of steel and the other of copper having areas of cross-sections A_s and A_c, coefficient of expansion ?s and ?c and Young's Modulii E_s and E_s are rigidly connected together at the ends and subjected to temperature change of t�. If the length of the bars initially is L, the final extension ? of the two bars at t� temperature is given by
Options
A.
B.
C.
D.

7. A load of 1960 N is raised at the end of a steel wire. The minimum diameter of the wire so that stress in the wire does not exceed 100 N/mm² is :
Options
A. 4.0 mm
B. 4.5 mm
C. 5.0 mm
D. 5.5 mm
E. 6.0 mm

8. If ?H and ?V are the algebraic sums of the forces resolved horizontally and vertically respectively, and ?M is the algebraic sum of the moments of forces about any point, for the equilibrium of the body acted upon
Options
A. ?H = 0
B. ?V = 0
C. ?M = 0
D. all the above.

9. Pick up the correct statement from the following:
Options
A. In a loaded beam, the moment at which the first yield occurs is called yield moment
B. In a loaded beam, the moment at which the entire section of the beam becomes fully plastic, is called plastic moment
C. In a fully plastic stage of the beam, the neutral axis divides the section in two sections of equal area
D. The ratio of plastic moment to the yield moment, is called shape factor
E. All the above.

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