Strength of Materials - Set 03 - ObjectiveBooks

Strength of Materials - Set 03

Practice Test: Question Set - 03

1. The shape of cantilever for uniformly distributed load will be
    (A) Straight line
    (B) Parabolic
    (C) Elliptical
    (D) Cubic

2. For a simply supported beam of length ‘l’, when a concentrated load W is applied in the center of the beam, the maximum deflection is
    (A) 5WL³/ 384EI
    (B) WL³/384EI
    (C) WL³/ 348EI
    (D) WL³/ 48EI

3. The point of contra flexure is a point where
    (A) Shear force changes sign
    (B) Shear force is maximum
    (C) Bending moment changes sign
    (D) Bending moment is maximum

4. The maximum stress produced in a bar of tapering section is at
    (A) Smaller end
    (B) Larger end
    (C) Middle
    (D) Anywhere

5. The ultimate tensile stress of mild steel compared to ultimate compressive stress is
    (A) Same
    (B) More
    (C) Less
    (D) Unpredictable

6. The energy stored in a body when strained within elastic limit is known as
    (A) Resilience
    (B) Proof resilience
    (C) Strain energy
    (D) Impact energy

7. Modular ratio of two materials is the ratio of
    (A) Strains
    (B) Stress and strain
    (C) Shear stress and shear strain
    (D) Moduli and elasticity

8. In compression test, the fracture in cast iron specimen would occur along
    (A) The axis of load
    (B) An oblique plane
    (C) At right angles to the axis of specimen
    (D) Would not occur

9. A coil is cut into two halves, the stiffness of cut coil will be
    (A) Double
    (B) Half
    (C) Same
    (D) None of these

10. The bending stress in a beam is _________ section modulus.
    (A) Inversely proportional to two times
    (B) Directly proportional to
    (C) Inversely proportional to
    (D) None of these

11. When shear force at a point is zero, then bending moment is _________ at that point.
    (A) Zero
    (B) Minimum
    (C) Maximum
    (D) Infinity

12. Elasticity of Mild Steel specimen is defined by
    (A) Hooke’s law
    (B) Yield point
    (C) Plastic flow
    (D) Proof stress

13. When a bar is cooled to -5°C, it will develop
    (A) No stress
    (B) Shear stress
    (C) Tensile stress
    (D) Compressive stress

14. If the radius of wire stretched by a load is doubled, then its Young’s modulus will be
    (A) Doubled
    (B) Halved
    (C) Becomes four times
    (D) None of the above

15. In order to know whether a column is long or short, we must know its
    (A) Ultimate shear stress of the column
    (B) Factor of safety
    (C) Torque resisting capacity
    (D) Slenderness ratio

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