Correct Answer:
Welding takes more time than riveting.
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2. In a beam, the neutral plane
Answer
Correct Answer:
Does not change during deformation
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3. The shape of the bending moment diagram over the length of a beam, having no external load, is always
Answer
Correct Answer:
Linear
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4. If the rivets in adjacent rows are staggered and outermost row has only one rivet, the arrangement of the rivets, is called
Answer
Correct Answer:
Diamond riveting
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5. The shear stress at any section of a shaft is maximum
Answer
Correct Answer:
At the top of the surface
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6. A simply supported beam carrying a uniformly distributed load over its whole span, is propped at the centre of the span so that the beam is held to the level of the end supports. The reaction of the prop will be
Answer
Correct Answer:
5/8th the distributed load
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7. The maximum twisting moment a shaft can resist, is the product of the permissible shear stress and
Answer
Correct Answer:
Polar modulus
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8. If two forces acting at a joint are not along the straight line, then for the equilibrium of the joint
Answer
Correct Answer:
Each force must be zero
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9. The minimum number of rivets for the connection of a gusset plate, is
Answer
Correct Answer:
2
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10. The slenderness ratio of a vertical column of a square cross-section of 2.5 cm sides and 300 cm length, is
Answer
Correct Answer:
416
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11. The deflection of any rectangular beam simply supported, is
Answer
Correct Answer:
Inversely proportional to the cube of its depth
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12. A three-hinged arch is said to be:
Answer
Correct Answer:
Statically determinate structure
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13. Influence lines are drawn for structures
Answer
Correct Answer:
Of any type
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14. The radius of gyration of a rectangular section is not proportional to
Answer
Correct Answer:
None of these.
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15. A beam of length L is pinned at both ends and is subjected to a concentrated bending couple of moment M at its centre. The maximum bending moment in the beam is
Answer
Correct Answer:
M
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16. If the shear force along a section of a beam is zero, the bending moment at the section is
Answer
Correct Answer:
Maximum
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17. 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
Answer
Correct Answer:
One-quarter of the radius
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18. 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
Answer
Correct Answer:
1/2
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19. The ratio of the moment of inertia of a circular plate and that of a square plate for equal depth, is
Answer
Correct Answer:
Equal to 3Π/16
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20. 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
Answer
Correct Answer:
0.25
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