Answer: any one of the above

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Questions

2
Young's modulus is defined as the ratio of

Answer: longitudinal stress and longitudinal strain

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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

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

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