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If a body is stressed within its elastic limit, the lateral strain bears a constant ratio to the linear strain. This constant is known as:
Which point on the stress strain curve occurs after proportionality limit?
A rod of length L and diameter D is subjected to a tensile load P. Which of the following is sufficient to calculate the resulting change in diameter?
A static load is mounted at the centre of a shaft rotating at uniform angular velocity. This shaft will be designed for
Which of the following is a good example of a composite bar?
A 1.5 mm thick sheet is subject to unequal biaxial stretching and the true strains in the directions of stretching are 0.05 and 0.09. The final thickness of the sheet in mm is
A steel bar of 40 mm × 40 mm square crosssection is subjected to an axial compressive load of 200 kN. If the length of the bar is 2 m and E = 200 GPa, the elongation of the bar will be:
The ultimate tensile strength of a material is 400 MPa and the elongation up to maximum load is 35%. If the material obeys power law of hardening, then the true stresstrue strain relation (stress in MPa) in the plastic deformation range is:
An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue life of the shaft in the presence of the residual compressive stress is:
A test specimen is stressed slightly beyond the yield point and then unloaded. Its yield strength will
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:
The phenomenon of slow growth of strain under a steady stress is called:
A bar of length L tapers uniformly from diameter 1.1 D at one end to 0.9 D at the other end. The elongation due to axial pull is computed using mean diameter D. What is the approximate error in computed elongation?
In the case of an engineering material under unidirectional stress in the x direction, the Poisson's ratio is equal to (symbols have the usual meanings)
If a piece of material neither expands nor contracts in volume when subjected to stress, then the Poisson‟s ratio must be
Assertion (A): Plastic deformation is a function of applied stress, temperature and strain rate.
Reason (R): Plastic deformation is accompanied by change in both the internal and external state of the material.
The correct sequence of creep deformation in a creep curve in order of their elongation is :
Consider the following statements:
For increasing the fatigue strength of welded joints it is necessary to employ
1. Grinding
2. Coating
3. Hammer peening
Of the above statements
The maximum energy that can be absorbed up to the elastic limit, without creating a permanent distortion is called
27 docs243 tests

27 docs243 tests
