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ESE ME: Strength of Materials Champion Quiz 1
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Question 1
A solid uniform metal bar of diameter D and length L is hanging vertically from its upper end. The elongation of the bar due to self-weight is
Question 2
In a tensile test, near the elastic limit zone
Question 3
Two Tapering bars of the same material are subjected to a tensile load P. The lengths of both bars are the same. The larger diameter of each of the bars id D. The diameter of the bar A at its smaller end is D/2 and that of the bar B is D/3. What is the ratio of elongation of the bar A to that of the bar B?
Question 4
Longitudinal stress in a thin cylinder subjected to internal pressure is
Question 5
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 6
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 7
What is the relationship between elastic constants E,G and K?
Question 8
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 9
The maximum principal stress for the stress state shown in the figure is
Question 10
Direction: The following items consists of two statement: one labelled as ‘Assertion’ A. and the other as ‘Reason’(R). You are to examine these two statements carefully and select the answers to these items using codes given below:
Assertion (A): A plane state of stress always results in a plane state of strain.
Reason (R): A uni-axial state of stress results in a three dimensional state of strain.
Reason (R): A uni-axial state of stress results in a three dimensional state of strain.
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Aug 17ESE & GATE ME
