Design Against Static Load Objective Questions - Set 01 - ObjectiveBooks

# Practice Test: Question Set - 01

1. The modulus of rigidity of carbon steel is
(A) 2,07,000 N/mm2
(B) 1,00,000 N/mm2
(C) 50,000 N/mm2
(D) 80,000 N/mm2

2. Within elastic limit, the stress is
(A) Equal to strain
(B) Inversely proportional to strain
(C) Directly proportional to strain
(D) Directly proportional to the square of strain

3. When a shaft of diameter ‘d’ and length ‘l’ is subjected to torsional moment Mt, then the angle of twist   in degrees is given by,
(A) 584 Mtl/Gd4
(B) Mtl/Ï€d4
(C) 584 Mtl/Gd3
(D) MtG/d4l

4. A component made of grey cast iron is designed on strength basis by
(A) Ultimate tensile strength
(B) Yield strength
(C) Modulus of elasticity
(D) Modulus of rigidity

5. A taper is provided for cotter
(A) To ensure tightness in operating condition
(B) To provide wedge action
(C) To ease the removal of cotter during dismantling
(D) For all three reasons

6. Knuckle joint is used for the joint between
(A) Tie bars in roof trusses
(C) Fulcrum of lever and support
(D) For all three applications

7. In ‘second’ type of levers, mechanical advantage is
(A) Less than one
(B) More than one
(C) Equal to one
(D) Any one of the above

8. The fulcrum pin of lever is designed on the basis of
(A) Torsional moment
(B) Axial tensile force
(C) Bending moment
(D) Bearing pressure

9. According to distortion energy theory of failure, the relationship between yield strength in shear (Ssy) and tensile yield strength (Syt) is
(A) Ssy = 0.5 Syt
(B) Ssy = 0.577 Syt
(C) Ssy = 0.75 Syt
(D) Ssy = 0.4 Syt

10. The maximum bending stress in a curved beam, having symmetrical cross-section, always occurs at
(A) Inner fiber
(B) Outer fiber
(C) Centroidal axis
(D) Neutral axis

11. Hooke’s law holds good up to
(A) Breaking point
(B) Yield point
(C) Elastic limit
(D) Plastic limit

12. The modulus of rigidity of grey cast iron is
(A) 2,07,000 N/mm2
(B) 1,00,000 N/mm2
(C) 40,000 N/mm2
(D) 80,000 N/mm2

13. The ratio of tensile stress to tensile strain within elastic limit is called
(A) Bulk modulus
(B) Poisson’s ratio
(C) Modulus of rigidity
(D) Modulus of elasticity

14. The bending stress induced in a beam is
(A) Maximum at the farthest fiber from neutral axis and zero at the neutral axis
(B) Uniform throughout the cross-section
(C) Zero at the farthest fiber from neutral axis and maximum at the neutral axis
(D) Zero at the neutral axis and zero at the farthest fiber and maximum at the mean distance

15. The factor of safety for cast iron component, subjected to static force, is
(A) 1.5 to 2
(B) 3 to 5
(C) 1.3 to 1.5
(D) 5 to 10

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