Practice Test: Question Set - 20
1. For a given material Young's modulus is 200 GN/m2 and modulus of rigidity is 80 GN/m2. The value of Poisson's ratio is
- (A) 0.15
- (B) 0.20
- (C) 0.25
- (D) 0.30
2. The rise of a parabolic arch at quarter points, is equal to
- (A) 1/3 times
the rise of the crown
- (B) 1/4 times
the rise of the crown
- (C) 1/2
times the rise of the crown
- (D) 3/4 times
the rise of the crown
3. The number of points of contraflexure in a simple supported beam carrying uniformly distributed load, is
- (A) 0
- (B) 1
- (C) 2
- (D) 3
4. When two plates butt together and are riveted with two cover plates with two rows of rivets, the joint is known as
- (A) Lap joint
- (B) Butt joint
- (C) Single riveted
single cover butt joint
- (D) Double
riveted double cover butt joint
5. If the width of a simply supported beam carrying an isolated load at its centre is doubled, the deflection of the beam at the centre is changed by
- (A) 1/2
- (B) 1/8
- (C) 2
- (D) 8
6. The moment diagram for a cantilever carrying linearly varying load from zero at its free end and to maximum at the fixed end will be a
- (A) Triangle
- (B) Rectangle
- (C) Parabola
- (D) Cubic
parabola
7. When a rectangular beam is loaded longitudinally, shear develops on
- (A) Bottom fibre
- (B) Top fibre
- (C) Middle fibre
- (D) Every-horizontal
plane
8. For a simply supported beam carrying uniformly distributed load W on it entire length L, the maximum bending moment is
- (A) WL/4
- (B) WL/8
- (C) WL/2
- (D) WL/3
9. Along the principal plan subjected to maximum principal stress
- (A) Maximum
shear stress acts
- (B) Minimum
shear stress acts
- (C) No shear
stress acts
- (D) None
of these
10. The width of a beam of uniform strength having a constant depth d length L, simply supported at the ends with a central load W is
- (A) 2WL/3fd2
- (B) 3WL/2fd2
- (C) 2fL/3Wd4
- (D) 3fL2/2Wd
11. The distance between the centres of adjacent rivets in the same row, is called
- (A) Pitch
- (B) Lap
- (C) Gauge
- (D) Staggered
pitch
12. Hooke's law states that stress and strain are
- (A) Directly
proportional
- (B) Inversely
proportional
- (C) Curvilinearly
related
- (D) None of
these
13. For a beam, if fundamental equations of statics are not sufficient to determine all the reactive forces at the supports, the structure is said to be
- (A) Determinate
- (B) Statically
determinate
- (C) Statically
indeterminate
- (D) None of
these
14. The tension coefficient of any member is
- (A) Force
divided by the length
- (B) Tension
divided by the length
- (C) Tension
per unit area
- (D) Tension
in the member
15. Rankine-Golden formula accounts for direct as well as buckling stress and is applicable to
- (A) Very long
columns
- (B) Long columns
- (C) Short
columns
- (D) Intermediate
columns
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