Q.1

The total strain energy of a beam of length L, having moment of inertia of its section I, when subjected to a bending moment M, is

Q.2

The stiffness of the close coil helical spring is

Q.3

Pick up the correct statement from the following:

  • The point of intersection of the bending axis with the cross section of the beam, is called shear centre
  • For I sections, the shear centre coincides with the centroid of the cross section of the beam
  • For channels, the shear centre does not concide its centroid
  • Bending loads should pass through the shear centre to avoid twisting
  • All the above.
Q.4

In plastic analysis, the shape factor for rectangular section, is

  • 1.4
  • 1.5
  • 1.6
  • 1.7
Q.5

The total strain energy of a beam of length L, having moment of inertia of its section I, when subjected to a bending moment M, is

Q.6

The maximum deflection due to a uniformly distributed load w/unit length over entire span of a cantilever of length l and of flexural rigidly EI, is

Q.7

The maximum magnitude of shear stress due to shear force F on a rectangular section of area A at the neutral axis, is

Q.8

The stiffness of the close coil helical spring is

Q.9

The assumption in the theory of bending of beams, is :

  • material is homogeneous
  • material is isotropic
  • Young's modulus is same in tension as well as in compression
  • each layer is independent to expand or to contract
  • all the above.
Q.10

The tangential component of stress on an plane inclined θ° to the direction of the force, may be obtained by multiplying the normal stress by

  • sin θ
  • cos θ
  • tan θ
  • sin θ cos θ
  • sin2θ
Q.11

The shape factor of standard rolled beam section varies from

  • 1.10 to 1.20
  • 1.20 to 1.30
  • 1.30 to 1.40
  • 1.40 to 1.50
Q.12

Shear strain energy theory for the failure of a material at elastic limit, is due to

  • Rankine
  • Guest or Trecas
  • St. Venant
  • Haig
  • Von Mises.
Q.13

Stress may be defined as

  • force per unit length
  • force per unit volume
  • force per unit area
  • none of these.
Q.14

There are two hinged semicircular arches A, B and C of radii 5 m, 7.5 m andm respectively and each carries a concentrated load W at their crowns. The horizontal thrust at their supports will be in the ratio of

  • 1 : 1 1/2 : 2
  • 2 : 1 1/2 : 1
  • 1 : 1 : 2
  • none of these.
Q.15

The point of contraflexure is the point where

  • B.M. changes sign
  • B.M. is maximum
  • B.M. is minimum
  • S.F. is zero.
Q.16

There are two hinged semicircular arches A, B and C of radii 5 m, 7.5 m andm respectively and each carries a concentrated load W at their crowns. The horizontal thrust at their supports will be in the ratio of

  • 1 : 1 1/2 : 2
  • 2 : 1 1/2 : 1
  • 1 : 1 : 2
  • none of these.
Q.17

Total strain energy theory for the failure of a material at elastic limit, is known

  • Guest's or Trecas' theory
  • St. Venant's theory
  • Rankine's theory
  • Haig's theory
  • Von Mises's theory.
Q.18

A spring of mean radiusmm contains 8 action coils of steel (N =N/mm2), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is

  • 25 N
  • 30 N
  • 35 N
  • 40 N
Q.19

The normal component of a force inclined through θ° is obtained by multiplying the force by

  • sin θ
  • cos θ
  • tan θ
  • sin θ cos θ
  • sin2θ
Q.20

Total strain energy theory for the failure of a material at elastic limit, is known

  • Guest's or Trecas' theory
  • St. Venant's theory
  • Rankine's theory
  • Haig's theory
  • Von Mises's theory.
Q.21

A spring of mean radiusmm contains 8 action coils of steel (N =N/mm2), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is

  • 25 N
  • 30 N
  • 35 N
  • 40 N
Q.22

Total strain energy theory for the failure of a material at elastic limit, is known

  • Guest's or Trecas' theory
  • St. Venant's theory
  • Rankine's theory
  • Haig's theory
  • Von Mises's theory.
Q.23

Total strain energy theory for the failure of a material at elastic limit, is known

  • Guest's or Trecas' theory
  • St. Venant's theory
  • Rankine's theory
  • Haig's theory
  • Von Mises's theory.
Q.24

m1 and m2 are the members of two individual simple trusses of a compound truss. The compound truss will be rigid and determinate if

  • m = m1 + m2
  • m = m1 + m2 + 1
  • m = m1 + m2 + 2
  • m = m1 + m2 + 3
Q.25

For a strongest rectangular beam cut from a circular log, the ratio of the width and depth, is

  • 0.303
  • 0.404
  • 0.505
  • 0.606
  • 0.707
Q.26

At any point of a beam, the section modulus may be obtained by dividing the moment of inertia of the section by

  • depth of the section
  • depth of the neutral axis
  • maximum tensile stress at the section
  • maximum compressive stress at the section
  • none of these.
Q.27

In case of a simply supported I-section beam of span L and loaded with a central load W, the length of elasto-plastic zone of the plastic hinge, is

  • none of these.
Q.28

The ratio of maximum and average shear stresses on a rectangular section, is

  • 1
  • 1.25
  • 1.5
  • 2.0
  • 2.5
Q.29

The strain energy due to volumetric strain

  • is directly proportional to the volume
  • is directly proportional to the square of exerted pressure
  • is inversely proportional to Bulk modulus
  • all the above.
Q.30

The locus of the moment of inertia about inclined axes to the principal axis, is

  • straight line
  • parabola
  • circle
  • ellipse.
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