SOM Objective Type Questions and Answers Practice Test - Set 24 - ObjectiveBooks

# Practice Test: Question Set - 24

1. The bending moment of a cantilever beam of length l and carrying a uniformly distributed load of w per unit length is __________ at the free end.
(A) Zero
(B) wl/4
(C) wl/2
(D) wl

2. For a shaft, the shear stress at a point is __________ the distance from the axis of the shaft.
(A) Equal to
(B) Directly proportional to
(C) Inversely proportional to
(D) None of these

3. The bending moment diagram for a simply supported beam carrying a uniformly distributed load of ‘w’ per unit length, will be
(A) A horizontal line
(B) A vertical line
(C) An inclined line
(D) A parabolic curve

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

5. When a body is subjected to a direct tensile stress (σ) in one plane, the maximum shear stress is __________ the maximum normal stress.
(A) Equal to
(B) One-half
(C) Two-third
(D) Twice

6. The ductility of a material __________ with the increase in percentage reduction in area of a specimen under tensile test.
(A) Increases
(B) Decreases
(C) Remains same
(D) None of these

7. Rivets are generally specified by
(A) Thickness of plates to be joined
(B) Overall length
(C) Shank diameter

8. The simply supported beam 'A' of length ‘l’ carries a central point load ‘W’. Another beam 'B' is loaded with a uniformly distributed load such that the total load on the beam is ‘W’. The ratio of maximum deflections between beams 'A' and 'B' is
(A) 5/8
(B) 8/5
(C) 5/4
(D) 4/5

9. The rectangular beam 'A' has length ‘l’, width ‘b’ and depth ‘d’. Another beam 'B' has the same length and depth but width is double that of 'A'. The elastic strength of beam 'B' will be _________ as compared to beam ‘A’.
(A) Same
(B) Double
(C) Four times
(D) Six times

10. The bending moment in the center of a simply supported beam carrying a uniformly distributed load of w per unit length is
(A) Zero
(B) wl²/2
(C) wl²/4
(D) wl²/8

11. The polar modulus for a solid shaft of diameter (D) is
(A) πD²/4
(B) πD³/16
(C) πD³/32
(D) πD⁴/64

12. The slenderness ratio is the ratio of
(A) Area of column to least radius of gyration
(B) Length of column to least radius of gyration
(C) Least radius of gyration to area of column
(D) Least radius of gyration to length of column

13. A simply supported beam 'A' of length ‘l’, breadth ‘b’ and depth ‘d’ carries a central load ‘W’. Another beam 'B' of the same dimensions carries a central load equal to 2W. The deflection of beam 'B' will be __________ as that of beam 'A'.
(A) One-fourth
(B) One-half
(C) Double
(D) Four times

14. When a bar of length ‘l’ and diameter ‘d’ is rigidly fixed at the upper end and hanging freely, then the total elongation produced in the bar due to its own weight is (where w = Weight per unit volume of the bar)
(A) wl/2E
(B) wl²/2E
(C) wl³/2E
(D) wl⁴/2E

15. In a riveted joint, when the rivets in the various rows are opposite to each other, the joint is said to be
(A) Chain riveted
(B) Zig-zag riveted
(C) Diamond riveted
(D) None of these

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