# 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 cm**

^{3}. 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/cm

^{2}tensile

- (B) 13.33 kg/cm

^{2}compressive

- (C) 26.67 kg/cm

^{2}tensile

- (D) 26.67 kg/cm

^{2}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/cm**

^{2}. 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 Î¸ to its transverse plane, is- (A) (

*P*/

*A*) sin

^{2}Î¸

- (B) (

*P*/2

*A*) sin 2Î¸

- (C) (

*P*/2

*A*) cos 2Î¸

- (D) (

*P*/

*A*) cos

^{2}Î¸

**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) 2

*M*/

*T*

- (D) 2

*T*/

*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

**View All Answers**

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