Practice Test: Question Set - 28
1. The shear force 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
2. Every direct stress is always accompanied by a strain in its own direction and an opposite kind of strain in every direction, at right angles to it. Such a strain is known as
- (A) Linear
strain
- (B) Lateral
strain
- (C) Volumetric
strain
- (D) Shear strain
3. A beam extending beyond the supports is called
- (A) Simply
supported beam
- (B) Fixed beam
- (C) Overhanging
beam
- (D) Cantilever
beam
4. The shear force and bending moment are zero at the free end of a cantilever beam, if it carries a
- (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
5. Compression members always tend to buckle in the direction of the
- (A) Axis of load
- (B) Perpendicular
to the axis of load
- (C) Minimum
cross section
- (D) Least
radius of gyration
6. In order to avoid tearing off the plate at an edge, the distance from the center of the rivet hole to the nearest edge of the plate (i.e. margin) should be (where d = Diameter of rivet hole in mm)
- (A) d
- (B) 1.5 d
- (C) 2 d
- (D) 2.5 d
7. A thin cylindrical shell of diameter (d) length (l) and thickness (t) is subjected to an internal pressure (p). The longitudinal stress in the shell is
- (A) pd/t
- (B) pd/2t
- (C) pd/4t
- (D) pd/6t
8. The maximum shear stress developed in a beam of rectangular section is __________ the average shear stress.
- (A) Equal to
- (B) 4/3 times
- (C) 1.5 times
- (D) Twice
9. The distance between the center of a rivet hole to the nearest edge of plate, is called
- (A) Margin
- (B) Pitch
- (C) Back pitch
- (D) Diagonal
pitch
10. When a rectangular beam is loaded transversely, the maximum tensile stress is developed on the
- (A) Top layer
- (B) Bottom layer
- (C) Neutral axis
- (D) Every
cross-section
11. The strain energy stored in a body, when suddenly loaded, is __________ the strain energy stored when same load is applied gradually.
- (A) Equal to
- (B) One-half
- (C) Twice
- (D) Four times
12. The load at which the column just buckles, is known as
- (A) Buckling load
- (B) Critical
load
- (C) Crippling
load
- (D) Any one of
these
13. The steel bars in a reinforced cement concrete beam are embedded __________ of the beam.
- (A) In the
center
- (B) Near the
bottom
- (C) Near
the top
- (D) At
any position
14. A reinforced cement concrete beam is considered to be made of
- (A) Homogeneous
material
- (B) Heterogeneous
material
- (C) Composite
material
- (D) Isotropic
material
15. Principle plane is a plane on which the shear stress is
- (A) Zero
- (B) Minimum
- (C) Maximum
- (D) None of
these
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