GATE CE format:mcq PYQs & Answers — Page 48

Questions 471–480 of 724. Imported answers require independent review unless marked reviewed.

A prismatic linearly elastic bar of length

, cross-sectional area

, and made up of a material with Young’s modulus

, is subjected to axial tensile force as shown in the figures

Diagram for Civil Engineering question 28

. When the bar is subjected to axial tensile forces

and

, the strain energies stored in the bar are

and

, respectively.

is the strain energy stored in the same bar when subjected to an axial tensile force

, the correct relationship is

Your answerChoose one option.

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A rigid weightless platform PQR shown in the figure (not drawn to the scale) can slide freely in the vertical direction. The platform is held in position by the weightless member OJ and four weightless, frictionless rollers. Points O and J are pin connections. A block of 90 kN rests on the platform as shown in the figure. The magnitude of horizontal component of the reaction (in kN) at pin O, is

Diagram for Civil Engineering question 29

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120

150

180

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The planar structure RST shown in the figure

is roller-supported at S and pin-supported at R. Members RS and ST have uniform flexural rigidity

and S is a rigid joint. Consider only bending deformation and neglect effects of self-weight and axial stiffness.

When the structure is subjected to a concentrated horizontal load

at the end T, the magnitude of rotation at the support R, is

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A cantilever beam PQ of uniform flexural rigidity (EI) is subjected to a concentrated moment M at R as shown in the figure. The deflection at the free end Q is

Diagram for Civil Engineering question 30

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Joints I, J, K, L, Q and M of the frame shown in the figure

(not drawn to the scale) are pins. Continuous members IQ and LJ are connected through a pin at N. Continuous members JM and KQ are connected through a pin at P. The frame has hinge supports at joints R and S. The loads acting at joints I, J and K are along the negative Y direction and the loads acting at joints L and M are along the positive X direction.

The magnitude of the horizontal component of reaction (in kN) at S, is

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A dowel bar is placed at a contraction joint. When contraction occurs, the concrete slab cracks at predetermined location(s). Identify the arrangement, which shows the correct placement of dowel bar and the place of occurrence of the contraction crack(s).

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Diagram for Civil Engineering question 31

Diagram for Civil Engineering question 31 (figure 2)

Diagram for Civil Engineering question 31 (figure 3)

Diagram for Civil Engineering question 31 (figure 4)

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The flow-density relationship of traffic on a highway is shown in the figure

. The correct representation of speed-density relationship of the traffic on this highway is

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Diagram for Civil Engineering question 31 (figure 5)

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The relationship between traffic flow rate (q) and density (D) is shown in the figure. The shock wave condition is depicted by

Diagram for Civil Engineering question 32

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flow with respect to point 1 (q₁ = qₘₐₓ)

flow changing from point 2 to point 6 (q₂ > q₆)

flow changing from point 3 to point 7 (q₃ < q₇)

flow with respect to point 4 and point 5 (q₄ = q₅)

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Group-I gives a list of test methods for evaluating properties of aggregates. Group-II gives the list of properties to be evaluated.

Group-I: Test methods P. Soundness test Q. Crushing test R. Los Angeles abrasion test S. Stripping value test

Group-II: Properties

Strength

Resistance to weathering

Adhesion

Hardness

The correct match of test methods under Group-I to properties under Group-II, is

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P-4; Q-1; R-2; S-3

P-2; Q-1; R-4; S-3

P-3; Q-4; R-1; S-2

P-2; Q-4; R-3; S-1

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The appropriate design length of a clearway is calculated on the basis of ‘Normal Take-off condition’. Which one of the following options correctly depicts the length of the clearway? (Note: None of the options are drawn to scale.)

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