1. Bulk modulus is defined as the ratio of

- Direct stress to direct strain
- Direct stress to shear strain
- Direct stress to lateral strain
- Direct stress to volumetric strain

2. What would be the value of Bulk modulus for a material which has Young’s modulus = 1.2 × 10^{5} N/mm^{2} and modulus of Rigidity = 4.8 × 10^{4} N/mm^{2}?

- 4 × 10
^{4}N/mm^{2} - 2 × 10
^{4}N/mm^{2} - 6 × 10
^{4}N/mm^{2} - 8 × 10
^{4}N/mm^{2}

3. The Bulk modulus (K) of a material having Young’s Modulus (E) = 200 GPa and Modulus of Rigidity (G) = 80 GPa is

- 133.3 GPa
- 233.3 GPa
- 160 GPa
- 250 GPa

4. If for a given material, E = 2G (E is modulus of elasticity, G is the shear modulus), then the bulk modulus K will be

- E/2
- E/3
- E
- E/4

5. If the bulk modulus of Brass is 110 GPa and its Poisson’s ratio is 0.30, then the elastic modulus (in GPa) of this material is

- 33
- 367
- 222
- 132

6. 1 N/mm^{2} is equal to

- 1 Pa
- 1 MPa
- 1 GPa
- 1 KPa

7. When a round bar material with diameter of 37.5 mm, length of 2.4 m, Young’s modulus of 110 GN/m^{2} and shear modulus of 42 GN/m^{2} is stretched for 2.5 mm, its Bulk modulus will be nearly

- 96 GN/m
^{2} - 104 GN/m
^{2} - 76 GN/m
^{2} - 84 GN/m
^{2}

8. If E, G, K and μ represent the elastic modulus, shear modulus, bulk modulus and Poisson’s ratio respectively of a linear elastic, isotropic and homogeneous material, and if you need to express the stress-strain relationships completely for this material, at least

- All the four must be known
- E, G and μ must be known
- E, K and μ must be known
- Any two of the four must be known

9. A glass rod having an elastic modulus of 90 GPa and Poisson’s ratio of 0.2 will have its bulk modulus (in GPa)

- 108
- 50
- 270
- 100

10. Which of the following expression gives the correct relationship between Young’s modulus (E), Bulk modulus (K) and Poisson’s ratio (μ)?

- E = 3K(1 – 2μ)
- K = 3E (1 – 2μ)
- K = 3E(1 – μ)
- E = 3K (1 – μ)

11. Bulk modulus is

- the ratio of lateral strain to linear strain within elastic limit
- the ratio of stress to strain within elastic limit
- the ratio of shear stress to shear strain within elastic limit
- the ratio of direct stress to corresponding volumetric strain