Q.1

During a tensile test on a ductile material

  • nominal stress at fracture is higher than the ultimate stress
  • true stress at fracture is higher than the ultimate stress
  • true stress at fracture is the same as the ultimate stress
  • none of these.
Q.2

The ratio of the tensile stress developed in the wall of a boiler in the circumferential direction to the tensile stress in the axial direction, is

  • 4
  • 3
  • 2
  • 1
Q.3

Along the principal plan subjected to maximum principal stress

  • maximum shear stress acts
  • minimum shear stress acts
  • no shear stress acts
  • none of these.
Q.4

When a rectangular beam is loaded longitudinally, shear develops on

  • bottom fibre
  • top fibre
  • middle fibre
  • every-horizontal plane.
Q.5

Along the principal plan subjected to maximum principal stress

  • maximum shear stress acts
  • minimum shear stress acts
  • no shear stress acts
  • none of these.
Q.6

For structural analysis, Maxwell's reciprocal theorem can be applied to :

  • plastic structures
  • elastic structures
  • symmetrical structures
  • all the above.
Q.7

An arch may be subjected to

  • shear and axial force
  • bending moment and shear force
  • bending moment and axial force
  • shear force and thrust
  • thrust, shear force and bending moment.
Q.8

A solid cube is subjected to equal normal forces on all its faces. The volumetric strain will be x-times the linear strain in any of the three axes when

  • x = 1
  • x = 2
  • x = 3
  • x = 4
Q.9

In rectangular columns (cross-section b x h), the core is a

  • rectangle of lengths b/2 and h/2
  • square of length b/2
  • rhombus of length h/2
  • rhombus of diagonals b/3 and h/3
  • none of the these.
Q.10

Stress in members of statically determinate simple frames, can be determined by

  • method of joints
  • method of sections
  • graphical solution
  • all the above.
Q.11

The reaction at support A of the beam shown in below figure, is

  • zero
  • 5 T
  • 10 T
  • 1 T
  • 4 T.
Q.12

The ratio of the effective length of a column and minimum radius of gyration of its cross-sectional area, is known

  • buckling factor
  • slenderness ratio
  • crippling factor
  • none of these.
Q.13

The stress in the wall of a cylinder in a direction normal to its longitudinal axis, due to a force acting along the circumference, is known as

  • yield stress
  • longitudinal stress
  • hoop stress
  • circumferential stress
  • ultimate stress.
Q.14

The ratio of the flexural strengths of two square beams one placed with its two sides horizontal and the other placed with one diagonal vertical, diagonal, is

  • 2
  • 2
  • 5
  • 7
Q.15

For a beam of uniform strength keeping its depth constant, the width will vary in proportion to

  • bending moment (M)
  • M
  • M2
  • none of these.
Q.16

Rankine-Golden formula accounts for direct as well as buckling stress and is applicable to

  • very long columns
  • long columns
  • short columns
  • intermediate columns
  • all the above.
Q.17

For a beam of uniform strength keeping its depth constant, the width will vary in proportion to

  • bending moment (M)
  • M
  • M2
  • none of these.
Q.18

If a steel rod ofmm diameter and 5 metres long elongates by 2.mm when subjected to an axial pull ofkg, the stress developed, is

  • 9.5541 kg/cm2
  • 95.541 kg/cm2
  • 955.41 kg/cm2
  • 9554.1 kg/cm2.
Q.19

For keeping the stress wholly compressive the load may be applied on a circular column anywhere within a concentric circle of diameter

  • d/2
  • d/3
  • d/4
  • d/8
  • d/10
Q.20

A diagram which shows the variations of the axial load for all sections of the span of a beam, is called

  • bending moment diagram
  • shear force diagram
  • thrust diagram
  • stress diagram
  • none of these.
Q.21

The tension coefficient of any member is

  • force divided by the length
  • tension divided by the length
  • tension per unit area
  • tension in the member.
Q.22

The law which states, "within elastic limits strain produced is proportional to the stress producing it", is known as

  • Bernoulli's law
  • Stress law
  • Hooke's law
  • Poisson's law
  • none of these.
Q.23

The reaction at the supports will be vertical to the plane of the support if the frame structure rests on

  • roller supports
  • free supports
  • hinged supports
  • all the above.
Q.24

While testing a cast iron beam (2.5 cm x 2.5 cm) in section and a metre long simply supported at the ends failed when akg weight is applied at the centre. The maximum stress induced is :

  • 960 kg/cm2
  • 980 kg/cm2
  • 1000 kg/cm2
  • 1200 kg/cm2.
Q.25

In a simply supported beam (l + 2a) with equal overhangs (a) and carrying a uniformly distributed load over its entire length, B.M. at the middle point of the beam will be zero if

  • l = 2a
  • l = 4a
  • l < 2a
  • l > a
  • l > 3a.
Q.26

Beams of uniform strength are preferred to those of uniform section because these are economical for

  • large spans
  • heavy weights
  • light weights
  • short spans.
Q.27

A shaft 9 m long is subjected to a torquet-m at a point 3 m distant from either end. The reactive torque at the nearer end will be

  • 5 tonnes metre
  • 10 tonnes metre
  • 15 tonnes metre
  • 20 tonnes metre
  • none of these.
Q.28

Pick up the correct statement from the following :

  • The distance of the eccentric axial load from the C.G. beyond which tension develops, is known as kern distance
  • In visco-elastic material, stress-strain relation is dependent on time
  • An instropic material has different properties is different directions
  • An orthotropic material has different properties in three mutually perpendicular directions
  • All the above.
Q.29

In a continuous bending moment curve the point where it changes sign, is called

  • point of inflexion
  • point of contraflexture
  • point of virtual hinge
  • all the above.
Q.30

Beams of uniform strength are preferred to those of uniform section because these are economical for

  • large spans
  • heavy weights
  • light weights
  • short spans.
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