Practice Test: Question Set - 16
1. The moment diagram for a cantilever carrying a concentrated load at its free end, will be
- (A) Triangle
- (B) Rectangle
- (C) Parabola
- (D) Cubic
parabola
2. The forces, which meet at one point, but their lines of action do not lie in a plane, are called
- (A) Coplanar non-concurrent forces
- (B) Non-coplanar concurrent forces
- (C) Non-coplanar non-concurrent forces
- (D) Intersecting forces
3. The shear stress at any section of a shaft is maximum
- (A) At the
centre of the section
- (B) At a
distance r/2 from the centre
- (C) At the top
of the surface
- (D) At
a distance 3/4 r from the centre
4. If the width b and depth d of a beam simply supported with a central load are interchanged, the deflection at the centre of the beam will be changed in the ratio of
- (A) b/d
- (B) d/b
- (C) (d/b)2
- (D) (b/d)2
5. The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be
- (A) r/2
- (B) 2r/3
- (C) r/A
- (D) 3r/2
6. A three hinged parabolic arch hinged at the crown and springing, has a horizontal span of 4.8 m and a central rise of 1 m. It carries a uniformly distributed load of 0.75 tonne per metre over half left hand span. The horizontal thrust at the support will be
- (A) 10.8
tonnes
- (B) 1.08 tonnes
- (C) 1.8 tonnes
- (D) 0.8 tonnes
7. A member which is subjected to reversible tensile or compressive stress may fail at a stress lower than the ultimate stress of the material. This property of metal, is called
- (A) Plasticity
of the metal
- (B) Elasticity
of the metal
- (C) Fatigue of
the metal
- (D) Workability
of the metal
8. A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly
- (A) 38 m
- (B) 62.5 m
- (C) 96 m
- (D) 124 m
9. Stress in a beam due to simple bending, is
- (A) Directly
proportional
- (B) Inversely
proportional
- (C) Curvilinearly
related
- (D) None of
these
10. The ratio of the tensile stress developed in the wall of a boiler in the circumferential direction to the tensile stress in the axial direction, is
- (A) 4
- (B) 3
- (C) 2
- (D) 1
11. According to law of triangle of forces
- (A) Three forces acting at a point will be in
equilibrium
- (B) Three forces acting at a point can be
represented by a triangle, each side being proportional to force
- (C) If three forces acting upon a particle are
represented in magnitude and direction by the sides of a triangle, taken in
order, they will be in equilibrium
- (D) If three forces acting at a point are in
equilibrium, each force is proportional to the sine of the angle between the
other two
12. The deflection due to couple M at the free end of a cantilever length L is
- (A) ML/EI
- (B) 2ML/EI
- (C) ML2/2EI
- (D) M2L/2EI
13. The bending moment is maximum on a section where shearing force
- (A) Is maximum
- (B) Is minimum
- (C) Is equal
- (D) Changes sign
14. Which one of the following statements is not correct?
- (A) The tangent of the angle of friction is equal to
coefficient of friction
- (B) The angle of repose is equal to angle of
friction
- (C) The tangent of the angle of repose is equal to
coefficient of friction
- (D) The sine of the angle of repose is equal to
coefficient to friction
15. For a simply supported beam with a central load, the bending moment is
- (A) Least at the
centre
- (B) Least at the
supports
- (C) Maximum at
the supports
- (D) Maximum at
the centre
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