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.Management Sciences
Category: Theory of Structures
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________________?
A. 4.0 mm
B. 4.5 mm
C. 5.0 mm
D. 5.5 mm
A material is said to be perfectly elastic if__________________?
A. It regains its original shape on removal of the load
B. It regains its original shape partially on removal of the load
C. It does not regain its original shape at all
D. None of these
For a strongest rectangular beam cut from a circular log, the ratio of the width and depth, is________________?
A. 0.303
B. 0.404
C. 0.505
D. 0.707
Pick up the correct statement from the following?
A. A wire wound in spiral form, is called a helical spring
B. The pitch of a close coil spring, is very small
C. The angle made by the coil with horizontal, is called the angle of helix
D. All the above
The force in EC of the truss shown in the given figure, is__________________?
A. Zero
B. 5t tension
C. 5t compression
D. 4t tension
Pick up the correct statement from the following?
A. Mcg = M M2 + r2) where letters carry their usual meanings
B. Tcp = m2 + T2)where letters carry their usual meanings
C. 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
D. All the above
In a shaft, the shear stress is not directly proportional to_________________?
A. Radius of the shaft
B. Angle of twist
C. Length of the shaft
D. Modulus of rigidity
If E, N, K and 1/m are modulus of elasticity, modulus of rigidity. Bulk modulus and Poisson ratio of the material, the following relationship holds good_______________?
A. E = 3K (1 – 2/m)
B. E = 2N (1 + 1/m)
C. (3/2)K (1 – 2/m) = N (1 + 1/m)
D. All the above
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