Practice Test: Question Set - 05
1. The direction of the reaction at support B of a truss shown in below figure will be
- (A) East of
North
- (B) West of
North
- (C) East of
South
- (D) West of
South
2. A beam of length L supported on two intermediate rollers carries a uniformly distributed load on its entire length. If sagging B.M. and hogging B.M. of the beam are equal, the length of each overhang, is
- (A) 0.107 L
- (B) 0.207 L
- (C) 0.307 L
- (D) 0.407 L
3. The unit of work or energy in S.I. units is
- (A) Newton
- (B) Pascal
- (C) Kilogram meter
- (D) Joule
4. The shear force on a simply supported beam is proportional to
- (A) Displacement
of the neutral axis
- (B) Sum of the
forces
- (C) Sum of the
transverse forces
- (D) Algebraic
sum of the transverse forces of the section
5. Shear deflection of a cantilever of length L, cross sectional area A and shear modulus G, subjected to w/m u.d.l., is
- (A) (3/4) (L2w/GA)
- (B) (3/2) (L2w/GA)
- (C) (2/3) (L3w/GA)
- (D) (3/2) (Lw/GA2)
6. Which of the following is not the unit of distance?
- (A) Angstrom
- (B) Light year
- (C) Micron
- (D) Milestone
7. In a bar of large length when held vertically and subjected to a load at its lower end, its own-weight produces additional stress. The maximum stress will be
- (A) At the lower
cross-section
- (B) At
the built-in upper cross-section
- (C) At the
central cross-section
- (D) At every
point of the bar
8. The value of Poisson's ratio always remains
- (A) Greater than
one
- (B) Less than
one
- (C) Equal to one
- (D) None of
these
9. The B.M. diagram of the beam shown in below figure, is
- (A) A rectangle
- (B) A triangle
- (C) A
trapezium
- (D) A parabola
10. Which of the following is not a vector quantity?
- (A) Weight
- (B) Velocity
- (C) Acceleration
- (D) Force
11. The greatest eccentricity which a load W can have without producing tension on the cross-section of a short column of external diameter D and internal diameter d, is
- (A) 4W/π
(D2 - d2)
- (B) π (D2
- d2)/32D
- (C) (D2 + d2)/8D
- (D) (D2 - d2)/8D
12. If ‘S’ is the shear force at a section of an I-joist, having web depth ‘d’ and moment of inertia ‘I’ about its neutral axis, the difference between the maximum and mean shear stresses in the web is,
- (A) Sd2/8I
- (B) Sd2/12I
- (C) Sd2/16I
- (D) Sd2/24I
13. Center of gravity of a thin hollow cone lies on the axis at a height of
- (A) One-fourth of the total height above base
- (B) One-third of the total height above base
- (C) One-half of the total height above base
- (D) Three-eighth of the total height above the
base
14. A rectangular bar of width b and height h is being used as a cantilever. The loading is in a plane parallel to the side b. The section modulus is
- (A) bh3/12
- (B) bh2/6
- (C) b2h/6
- (D) None of
these
15. A beam is said to be of uniform strength, if
- (A) B.M. is same
throughout the beam
- (B) Shear stress
is same throughout the beam
- (C) Deflection
is same throughout the beam
- (D) Bending
stress is same at every section along its longitudinal axis
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