Practice Test: Question Set - 12
1. The width b and depth d of a beam cut from a wooden cylindrical log of 100 cm diameter for maximum strength are:
- (A) b =
57.73 cm d = 81.65 cm
- (B) b =
81.65 cm d = 57.73 cm
- (C) b =
50.00 cm d = 50.00 cm
- (D) b =
40.00 cm d = 80.00 cm
2. Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one
- (A) Ellipse
- (B) Hyperbola
- (C) Parabola
- (D) Circle
3. As compared to uniaxial tension or compression, the strain energy stored in bending is only
- (A) 1/8
- (B) 1/4
- (C) 1/3
- (D) 1/2
4. Strain energy of any member may be defined as work done on it
- (A) To deform it
- (B) To
resist elongation
- (C) To
resist shortening
- (D) All the
above
5. Effect of a force on a body depends upon
- (A) Magnitude
- (B) Direction
- (C) Position or line of action
- (D) All of the above
6. If n is the ratio of internal and external diameters of a hollow shaft, the ratio of the weight of the hollow shaft and that of solid shaft of same strength, will be
- (A) (1 - n2)/(1 - n2)1/2
- (B) (1 - n2)/(1 - n4)2/3
- (C) (1 + n3)/(1 + n4)1/2
- (D) (1 + n1)/(1 + n4)2/3
7. The effect of arching a beam, is
- (A) To reduce
the bending moment throughout
- (B) To increase the bending moment throughout
- (C) Nothing on
the bending throughout
- (D) All the
above
8. D' Alembert's principle is used for
- (A) Reducing the problem of kinetics to
equivalent statics problem
- (B) Determining stresses in the truss
- (C) Stability of floating bodies
- (D) Designing safe structures
9. The range within which a load can be applied on a rectangular column, to avoid any tensile stress, is
- (A) One-half
of the base
- (B) One-fifth of
the base
- (C) One-fourth
of the base
- (D) One-sixth of
the base
10. For the same height, the bottom width for no tension,
- (A) For
triangular section is more than rectangular section
- (B) For
rectangular section is more than triangular section
- (C) For
triangular section is same as that of a rectangular section
- (D) None of
these
11. Coefficient of friction is the
- (A) Angle between normal reaction and the resultant of
normal reaction and the limiting friction
- (B) Ratio of limiting friction and normal
reaction
- (C) The friction force acting when the body is just
about to move
- (D) The friction force acting when the body is
in motion
12. An arch may be subjected to
- (A) Shear and
axial force
- (B) Bending
moment and shear force
- (C) Bending
moment and axial force
- (D) Thrust,
shear force and bending moment
13. The shape of the bending moment diagram over the length of a beam, carrying a uniformly increasing load, is always
- (A) Linear
- (B) Parabolic
- (C) Cubical
- (D) Circular
14. The C.G. of a right circular solid cone of height h lies at the following distance from the base
- (A) h/2
- (B) h/3
- (C) h/6
- (D) h/4
15. For a channel section, the shear centre lies at a distance of
- (A) dbt/2I
- (B) d2bt/3I
- (C) d2b2t/4I
- (D) db2t/5I