A bar of square section of area a2 is held such that its one of its diameters is

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A bar of square section of area a² is held such that its one of its diameters is vertical. The maximum shear stress will develop at a depth h where h is
Options
A.
B.
C.
D.

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1. If a three hinged parabolic arch, (span l, rise h) is carrying a uniformly distributed load w/unit length over the entire span,
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A. horizontal thrust is wl²/8h
B. S.F. will be zero throughout
C. B.M. will be zero throughout
D. all the above.

6. A steel bar 5 m x 50 mm is loaded with 250, 000 N. If the modulus of elasticity of the material is 0.2 MN/mm² and Poisson's ratio is 0.25, the change in the volume of the bar is :
Options
A. 1.125 cm³
B. 2.125 cm³
C. 3.125 cm³
D. 4.125 cm²

7. A steel rod of sectional area 250 sq. mm connects two parallel walls 5 m apart. The nuts at the ends were tightened when the rod was heated to 100�C. If ?_steel = 0.000012/C�, E_steel = 0.2 MN/mm², the tensile force developed at a temperature of 50�C, is
Options
A. 80 N/mm²
B. 100 N/mm²
C. 120 N/mm²
D. 150 N/mm²

8. is the equation of Euler's crippling load, if
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A. both the ends are fixed
B. both the ends are hinged
C. one end is fixed and other end is free
D. one end is fixed and other end is hinged.

10. A simply supported beam carries a varying load from zero at one end and w at the other end. If the length of the beam is a, the shear force will be zero at a distance x from least loaded point where x is
Options
A.
B.
C.
D.

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