Practice Test: Question Set - 19
1. If the depth of a simply supported beam carrying an isolated load at its centre, is doubled, the deflection of the beam at the centre will be changed by a factor of
- (A) 2
- (B) 1/2
- (C) 8
- (D) 1/8
2. The minimum number of rivets for the connection of a gusset plate, is
- (A) 1
- (B) 2
- (C) 3
- (D) 4
3. The cross sections of the beams of equal length are a circle and a square whose permissible bending stress is same under same maximum bending. The ratio of their flexural weights is,
- (A) 1.118
- (B) 1.338
- (C) 1.228
- (D) 1.108
4. Pick up the correct statement from the following:
- (A) A ductile
material has large plastic zone
- (B) A
brittle material has no plastic zone
- (C) A rigid
material has no plastic zone
- (D) All the
above
5. The section modulus of a rectangular light beam 25 metres long is 12.500 cm3. The beam is simply supported at its ends and carries a longitudinal axial tensile load of 10 tonnes in addition to a point load of 4 tonnes at the centre. The maximum stress in the bottom most fibre at the mid span section, is
- (A) 13.33 kg/cm2 tensile
- (B) 13.33 kg/cm2 compressive
- (C) 26.67 kg/cm2 tensile
- (D) 26.67 kg/cm2 compressive
6. Stress in members of statically determinate simple frames, can be determined by
- (A) Method of
joints
- (B) Method of
sections
- (C) Graphical
solution
- (D) All the
above
7. The point of contraflexure occurs in
- (A) Cantilever
beams only
- (B) Continuous
beams only
- (C) Over hanging
beams only
- (D) All types of
beams
8. A rectangular beam 20 cm wide is subjected to a maximum shearing force of 10,000 kg, the corresponding maximum shearing stress being 30 kg/cm2. The depth of the beam is
- (A) 15 cm
- (B) 20 cm
- (C) 25 cm
- (D) 30 cm
9. If a member is subjected to a tensile force P, having its normal cross-section A, the resulting shear stress in an oblique plane inclined at an angle θ to its transverse plane, is
- (A) (P/A) sin2θ
- (B) (P/2A)
sin 2θ
- (C) (P/2A)
cos 2θ
- (D) (P/A)
cos2θ
10. If a shaft is simultaneously subjected to a toque T and a bending moment M, the ratio of maximum bending stress and maximum shearing stress is
- (A) M/T
- (B) T/M
- (C) 2M/T
- (D) 2T/M
11. The ratio of the effective length of a column and minimum radius of gyration of its cross-sectional area, is known
- (A) Buckling
factor
- (B) Slenderness
ratio
- (C) Crippling
factor
- (D) None of
these
12. The region of the cross-section of a column in which compressive load may be applied without producing any tensile stress, is known as the core of the cross-section. In circular columns the radius of the core, is
- (A) One-half of
the radius
- (B) One-third of
the radius
- (C) One-quarter
of the radius
- (D) One-fifth
of the radius
13. 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) 2 times
- (B) 4 times
- (C) 8 times
- (D) 1/2 times
14. A cylinder is said to be thin if the ratio of its thickness and diameter, is less than
- (A) 1/25
- (B) 1/20
- (C) 1/15
- (D) 1/10
15. As the elastic limit reaches, tensile strain
- (A) Increases
more rapidly
- (B) Decreases
more rapidly
- (C) Increases in
proportion to the stress
- (D) Decreases in
proportion to the stress
Next Tests: