A load W is moving from left to right support on a simply supported beam of span T. The maximum bending moment at 0.4 1 from the left support is
A. 0.16 Wl
B. 0.20 Wl
C. 0.24 Wl
D. 0.25 Wl
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Effects of shear force and axial force on plastic moment capacity of a structure are respectively to
A. Increase and decrease
B. Increase and increase
C. Decrease and increase
D. Decrease and decrease
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The principle of virtual work can be applied to elastic system by considering the virtual work of
A. Internal forces only
B. External forces only
C. Internal as well as external forces
D. None of the above
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Pick up the correct statement for the web stiffeners.
A. Vertical stiffeners are spaced at a distance not greater than 1.5 d and not less than 0.33 d
B. d is the distance between flange angles or the clear distance between flanges
C. For horizontal stiffeners, d is the clear distance between the horizontal stiffener and the tension flange
D. All the above
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Number of unknown internal forces in each member of a rigid jointed plane frame is
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The number of independent displacement components at each joint of a rigid-jointed space frame is
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The slenderness effect of a wall is considered if the effective height of the wall exceeds the thickness
A. 8 times
B. 10 times
C. 12 times
D. 16 times
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The test strength of the sample is taken as the average of the strength of
A. 2 specimens
B. 3 specimens
C. 4 specimens
D. 5 specimens
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Degree of kinematic indeterminacy of a pin-jointed plane frame is given by
A. 2j - r
B. j - 2r
C. 3j - r
D. 2j + r
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If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by
A. m + r + 2j
B. m - r + 2j
C. m + r - 2j
D. m + r - 3j
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The effective length of lacing is the distance
A. Between the inner end rivets of the bar for single lacing
B. 0.7 of the distance between the inner end rivets of the bar for double lacing
C. Between the inner ends of effective lengths of welds connecting the members
D. All the above
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For a two-hinged arch, if one of the supports settles down vertically, then the horizontal thrust
A. Is increased
B. Is decreased
C. Remains unchanged
D. Becomes zero
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For a symmetrical two hinged parabolic arch, if one of the supports settles horizontally, then the horizontal thrust
A. Is increased
B. Is decreased
C. Remains unchanged
D. Becomes zero
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If the main reinforcement of the slab is parallel to a T-beam, the transverse reinforcement at mid span of the slab is provided at least __________ of main reinforcement.
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The deformation of a spring produced by a unit load is called
A. Stiffness
B. Flexibility
C. Influence coefficient
D. Unit strain
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The number of independent equations to be satisfied for static equilibrium of a plane structure is
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To generate the jth column of the flexibility matrix
A. A unit force is applied at coordinate j and the displacements are calculated at all co-ordinates
B. A unit displacement is applied at co-ordinate j and the forces are calculated at all co-ordinates
C. A unit force is applied at coordinate j and the forces are calculated at all co-ordinates
D. A unit displacement is applied at co-ordinate j and the displacements are calculated at all co-ordinates
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The three moments equation is applicable only when
A. The beam is prismatic
B. There is no settlement of supports
C. There is no discontinuity such as hinges within the span
D. The spans are equal
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The Castigliano's second theorem can be used to compute deflections
A. In statically determinate structures only
B. For any type of structure
C. At the point under the load only
D. For beams and frames only
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Bending moment at any section in a conjugate beam gives in the actual beam
A. Slope
B. Curvature
C. Deflection
D. Bending moment
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