Stress and Strain MCQs | Stress and Strain Multiple Choice Questions and Answers
Questions
2
Young's modulus is defined as the ratio of
Answer: longitudinal stress and longitudinal strain
⭐ Make GKSeries Your Preferred Source on Google
Add GKSeries as Preferred Source
3
Deformation per unit length in the direction of force is known as
Answer: linear strain
4
The materials having same elastic properties in all directions are called
Answer: isotropic materials
5
A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under
Answer: increase uniformly first and then increase rapidly
6
Modulus of rigidity is defined as the ratio of
Answer: shear stress and shear strain
7
Tensile strength of a material is obtained by dividing the maximum load during the test by the
Answer: original cross-sectional area
8
The Young's modulus of a wire is defined as the stress which will increase the length of wire compared to its original length
Answer: same amount
9
Percentage reduction of area in performing tensile test on cast iron may be of the order of
Answer: 0%
10
The intensity of stress which causes unit strain is called
Answer: modulus of elasticity
11
During a tensile test on a specimen of 1 cm cross-section, maximum load observed was 8 tonnes and area of cross-section at neck was 0.5 cm2. Ultimate tensile strength of specimen is
Answer: 8 tonnes/cm2
12
For steel, the ultimate strength in shear as compared to in tension is nearly
Answer: half
13
If a part is constrained to move and heated, it will develop
Answer: compressive stress
14
The value of modulus of elasticity for mild steel is of the order of
Answer: 2.1 X 106 kg/cm2
16
The buckling load for a given material depends on
Answer: slenderness ratio, area of cross-section and modulus of elasticity
17
The total elongation produced in a bar of uniform section hanging vertically downwards due to its own weight is equal to that produced by a weight
Answer: half the weight of bar applied at lower end
18
The property of a material by virtue of which a body returns to its original, shape after removal of the load is called
Answer: elasticity
19
The materials which exhibit the same elastic properties in all directions are called
Answer: isotropic
