Test: Strength of Materials Level - 3 - Mechanical Engineering MCQ
25 Questions MCQ Test - Test: Strength of Materials Level - 3
The stretch in a steel of circular section having a length L subjected to a tensile load P and tepering uniformly from a diameter d1 at one end to a diameter d2 at the other end, is given by
The total extension of the bar loaded as shown in the figure is A = area of cross-section E = modulus of elasticity
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The deformation of a bar under its own weight as compared to that when subjected to a direct axial load equal to its own weight will be
A slender bar of 100 mm2 cross-section is subjected to loading as shown in the figure below. If the modulus of elasticity is taken as 200 × 109. pa. then the elongation produced in the bar will be
A straight bar is fixed at edges A and B. its elastic modulus is E and cross-section is A. There is a load P = 120 N acting at C. The reactions at the ends are
In a tensile test, near the elastic limit zone
If Poisson's ratio of a material is 0.5, then the elastic modulus for the material is
The number of independent elastic constants required to express the stress strain relationship for a linearly elastic isotropic material is
The number of elastic constants for a completely anisotropic elastic material is
For a given material, the modulus of rigidity is 100 GPa and Poisson's ratio is 0.25. The value of modulus of elasticity in GPa is
The volumetric strain in case of a thin cylindrical shell of diameter 'd', thickness 't', subjected to internal pressure 'P' is
The modulus of elasticity for a material is 200 GN/m2 and Poisson's ratio is 0.25. What is the modulus of rigidity ?
E, G, K andm represent the elastic modulus, shear modulus, Bulk modulus and poisson's ratio respectively of a linearly elastic. isotropic and homogeneous material. To express the stressstrain relations completely for this material, at least
What is the relationship between the linear elastic properties; Young's modulus (E), rigidity modulus (G) and bulk modulus (K) ?
A copper rod 400 mm long is pulled in tension to a length of 401.2 mm by applying a tensile stress of 330 MPa. If the deformation is entirely elastic, the Young's Modulus of copper is
Match List – I (State of stress) with List -II (kind of loading) and select the correct answer using the codes given below the lists:
State of stress at a point in a strained body is shown in figure A. which one of the figure given below represents correctly the mohr's circle for the state of stress?
Plane stress at a point in a body is defined by principal stresses 3s and s. The ratio of the normal stress to the maximum shear stress on the plane of maximum shear stress is
Which one of the following Mohr's circles represents the state of pure shear?
In a two dimensional problem the state of pure shear at a point is characterized by
A cantilever is loaded by a concentrated load P at the free and as shown. The shear stress in the element LMNOPQRS is under consideration
Which of the following figures represents the shear stress direction in the cantilever ?
A circular shaft subjected to twisting moment results in maximum shear stress of 60 MPa. Then the maximum compressive stress in the material is
Consider a two dimensional state of stress given for an element as shown in the diagram given below: What are the coordinates of the centre of Mohr's circle
A steel bar of 5 mm is heated from 25°C to 45°C and it is free to expand. The bar will induce
At a point in two-dimensional stress system sx = 100 N/mm2,sy =txy= 400 N/mm2. what drawn with a scale of 1cm = 100 N/mm2.
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