Practice Test: Question Set - 04
1. Pick up the incorrect statement
- (A) The
cross-sectional area of the welded member is effective
- (B) A
welded joint develops strength of its parent metal
- (C) Welded
joints provide rigidity
- (D) Welding
takes more time than riveting
2. A 8 metre long simply supported rectangular beam which carries a distributed load 45 kg/m. experiences a maximum fibre stress 160 kg/cm2. If the moment of inertia of the beam is 640 cm4, the overall depth of the beam is
- (A) 10 cm
- (B) 12 cm
- (C) 15 cm
- (D) 18 cm
3. A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if
- (A) The floor is smooth, the wall is rough
- (B) The floor is rough, the wall is smooth
- (C) The floor and wall both are smooth surfaces
- (D) The floor and wall both are rough surfaces
4. A triangular section having base b, height h, is placed with its base horizontal. If the shear stress at a depth y from top is q, the maximum shear stress is
- (A) 3S/bh
- (B) 4S/bh
- (C) 4b/Sh
- (D) 3b/bS
5. Maximum deflection of a
- (A) Cantilever
beam carrying a concentrated load W at its free end is WL3/3EI
- (B) Simply
supported beam carrying a concentrated load W at mid-span is WL3/48EI
- (C) Cantilever
beam, carrying a uniformly distributed load over span is WL3/8EI
- (D) All the
above
6. From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate
- (A) 0.5 cm
- (B) 1.0 cm
- (C) 1.5 cm
- (D) 2.5 cm
7. If a rectangular beam measuring 10 × 18 × 400 cm carries a uniformly distributed load such that the bending stress developed is 100 kg/cm2. The intensity of the load per metre length, is
- (A) 240 kg
- (B) 250 kg
- (C) 260 kg
- (D) 270 kg
8. If two tensile forces mutually perpendicular act on a rectangular parallelepiped bar are equal, the resulting elongation of the pipe, is
- (A) (P/E)
(1 - m)
- (B) (E/P)
(m -1)
- (C) (E/P)
(1 - m)
- (D) (P/E)
(1 + m)
9. On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be
- (A) Towards the wall at its upper end
- (B) Away from the wall at its upper end
- (C) Upwards at its upper end
- (D) Downwards at its upper end
10. If the rivets in adjacent rows are staggered and outermost row has only one rivet, the arrangement of the rivets, is called
- (A) Chain
riveting
- (B) Zig-zag
riveting
- (C) Diamond
riveting
- (D) None of
these
11. The bending moment at C of a portal frame shown in below figure is
- (A) 8 t-m
- (B) 4 t-m
- (C) 28 t-m
- (D) Zero
12. If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either
- (A) Meet in a point
- (B) Be all parallel
- (C) At least two of them must meet
- (D) All the above are correct
13. In a three hinged arch, the shear force is usually
- (A) Maximum at
crown
- (B) Maximum at
springing
- (C) Maximum at
quarter points
- (D) Varies with
slope
14. If Z and I are the section modulus and moment of inertia of the section, the shear force F and bending moment M at a section are related by
- (A) F = My/I
- (B) F = M/Z
- (C) F = dM/dx
- (D) F = ∫Mdx
15. A pair of smith's tongs is an example of the lever of
- (A) Zeroth order
- (B) First order
- (C) Second order
- (D) Third order