Q.1

If a constant section beam is subjected to a uniform bending moment throughout, its length bends to

  • a circular arc
  • a parabolic arc
  • a catenary
  • none of these.
Q.2

The length of a column, having a uniform circular cross-section of 7.5 cm diameter and whose ends are hinged, is 5 m. If the value of E for the material istonnes/cm2, the permissible maximum crippling load will be

  • 1.288 tonnes
  • 12.88
  • 128.8 tonnes
  • 288.0
  • none of these.
Q.3

A cantilever beam rectangular in cross-section is subjected to an isolated load at its free end. If the width of the beam is doubled, the deflection of the free end will be changed in the ratio of

  • 8
  • 1/8
  • 1/2
  • 2
  • 3
Q.4

A simply supported wooden beamcm long and having a cross sectioncm xcm carries a concentrated load, at the centre. If the permissible stress ft =kg/cm2 and fs =kg/cm2 the safe load is

  • 3025 kg
  • 3050 kg
  • 3075 kg
  • 3100 kg.
Q.5

When equal and opposite forces applied to a body, tend to elongate it, the stress so produced, is called

  • shear stress
  • compressive stress
  • tensile stress
  • transverse stress.
Q.6

The maximum resistance against rotation, is offered by the weld at a point

  • most distant
  • least distant
  • at either end
  • centrally located.
Q.7

A cylinder is said to be thin if the ratio of its thickness and diameter, is less than

  • 1/25
  • 1/20
  • 1/15
  • 1/10
  • 1/5
Q.8

A joint of a frame is subjected to three tensile force P, Q and R equally inclined to each other. If P istonnes, the other forces will be

  • Q = 10 tonnes and R = zero
  • R + 10 tonnes and Q = zero
  • Q + R = 10 tonnes
  • Q - R = zero
  • Q and R each is equal to 10 tonnes.
Q.9

In a bar of large length when held vertically and subjected to a load at its lower end, its own-weight produces additional stress. The maximum stress will be

  • at the lower cross-section
  • at the built-in upper cross-section
  • at the central cross-section
  • at every point of the bar.
Q.10

At either end of a plane frame, maximum number of possible bending moments, are

  • one
  • two
  • three
  • four
  • zero.
Q.11

In a three hinged arch, the third hinge is generally kept at

  • crown of the arch
  • midpoint of the crown and left support hinge
  • midpoint of the crown and right support hinge
  • none of these.
Q.12

A simply supported beam (l + 2a) with equal overhangs (a) carries a uniformly distributed load over the whole length, the B.M. changes sign if

  • l > 2a
  • l < 2a
  • l = 2a
  • l = 4a
  • l = 3a.
Q.13

If a three hinged parabolic arch carries a uniformly distributed load on its entire span, every section of the arch resists.

  • compressive force
  • tensile force
  • shear force
  • bending moment.
Q.14

The phenomenon of slow extension of materials having constant load, i.e. increasing with the time is called

  • creeping
  • yielding
  • breaking
  • none of these.
Q.15

Stress in a beam due to simple bending, is

  • directly proportional
  • inversely proportional
  • curvilinearly related
  • none of these.
Q.16

For structural analysis of forces, the method refers to

  • moment-area-theorem
  • three-moment equation
  • Maxwell's reciprocal theorem
  • none of these.
Q.17

The shear force on a simply supported beam is proportional to

  • displacement of the neutral axis
  • sum of the forces
  • sum of the transverse forces
  • algebraic sum of the transverse forces of the section
  • curvature of the neutral axis.
Q.18

The principal stresses at a point areand-kgf/cm2, the octo hedral shear stress at the point is :

  • 100 2 kg/cm2
  • 200 2 kg/cm2
  • 300 2 kg/cm2
  • 400 2 kg/cm2
  • 500 2 kg/cm2.
Q.19

In a three hinged arch, the bending moment will be zero

  • at right hinge only
  • at left hinge only
  • at both right and left hinges
  • at all the three hinges.
Q.20

The shape of the bending moment diagram over the length of a beam, carrying a uniformly increasing load, is always

  • linear
  • parabolic
  • cubical
  • circular.
Q.21

A bending moment may be defined as :

  • Arithmetic sum of the moments of all the forces on either side of the section
  • Arithmetic sum of the forces on either side of the section
  • Algebraic sum of the moments of all the forces on either side of the section
  • None of these.
Q.22

If the width b and depth d of a beam simply supported with a central load are interchanged, the deflection at the centre of the beam will be changed in the ratio of

  • b/d
  • d/b
  • (d/b)2
  • (b/d)2
  • (b/d)3.
Q.23

The type of butt joints in common use, is :

  • single inverted V-butt joint
  • double V-butt joint
  • double U-butt joint
  • single V-butt joint.
Q.24

In a three hinged arch, the shear force is usually

  • maximum at crown
  • maximum at springings
  • maximum at quarter points
  • varies with slope.
Q.25

A cantilever carrying a uniformly distributed load W over its full length is propped at its free end such that it is at the level of the fixed end. The bending moment will be zero at its free end also at

  • mid point of the cantilever
  • fixed point of the cantilever
  • 1/4th length from free end
  • 3/4th length from free end
  • half length from free end.
Q.26

An arch with three hinges, is a structure

  • statically determinate
  • statically indeterminate
  • geometrically unstable
  • structurally sound but indeterminate
  • none of these.
Q.27

The point of contraflexture occurs in

  • cantilever beams only
  • continuous beams only
  • over hanging beams only
  • all types of beams
  • both (a) and (b).
Q.28

The under mentioned type is simple strain

  • tensile strain
  • compressive strain
  • shear strain
  • volumetric strain
  • all the above.
Q.29

As the elastic limit reaches, tensile strain

  • increases more rapidly
  • decreases more rapidly
  • increases in proportion to the stress
  • decreases in proportion to the stress.
Q.30

Struts are load carrying members of a frame structure which are subjected to

  • axial tension loads
  • axial compressive loads
  • torsional loads
  • transverse loads.
0 h : 0 m : 1 s