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ESE ME 2018 Achiever Study Plan:Strength of Materials Quiz 1

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Question 1

If E, G and K denotes Young’s modulus, Modulus of rigidity and Bulk Modulus, respectively, for an elastic material, then which one of the following can be possible true for certain value of Poisson’s ratio.

Question 2

Two principal tensile stresses of magnitude 40 MPa and 20 MPa are acting at a point across two perpendicular planes. An oblique plane makes an angle of 30 ° with the major principal plane. The normal stress on the oblique plane is

Question 3

The modulus of rigidity and the bulk modulus of a material are found as 70 GPa and 150 GPa respectively.
(i) elasticity modulus is 200 GPa
(ii) Poisson‟s ratio is 0.22
(iii) elasticity modulus is 182 GPa
(iv) Poisson‟s ratio is 0.3
Which of the above statements are correct?

Question 4

An elastic material of Young’s modulus E and ratio v is subjected to a compressive stress of σ₁ in the longitudinal direction. Suitable lateral compressive stress σ₂ are also applied along the other two lateral directions to limit the net strain in each of the directions to half of the magnitude that would be under σ₁ acting along. The magnitude of σ₂ is

Question 5

A rectangular strain rosette, shown in figure, give following reading in a strain measurement task ϵ₁ = 1000 × 10^-6, ϵ₂ = 800 × 10^-6, ϵ₃ = 600 × 10^-6. The direction of the major principal strain with respect to gauge 1 is
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Question 6

A bar produces a lateral strain of magnitude -60 × 10^-5 when subjected to tensile stress of magnitude 300 MPa along the axial direction. What is the elastic modulus of the material, if the Poisson ratio is 0.3?

Question 7

Shear force and bending moment diagrams for a beam ABCD are shown in figure. It can be concluded that
$Description: F:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE-22-April\GATE-IES-ME-Strength-of-Materials_files\image261.jpg$

Question 8

A beam is said to be of uniform strength if
A. The bending moment is the same throughout the beam
B. The shear stress is the same throughout the beam
C. The deflection is the same throughout the beam
D. The bending stress is the same at every section along its longitudinal axis
Answer ||| D
Solution ||| Section modulus (Z) represents the strength of the section. A beam is said to be of uniform strength if the bending stress is the same at every section along its longitudinal axis.
Linked To Above Question ||| No
Difficulty ||| Medium
Time ||| 60
Marking ||| 2, -0.66
Topic ||| Strength of Materials || SFD/BMD || SFD/BMD
PYSP ||| ESE-2007

84. The shearing force diagram for a beam is shown in the figure below.
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The bending moment diagram is represented by which one of the following?