McqMate
Chapters
| 1. |
The branch of Engineering-science, which deals with water at rest or in motion is called |
| A. | hydraulics |
| B. | Fluid mechanics |
| C. | Applied mechanics |
| D. | Kinematics. |
| Answer» A. hydraulics | |
| 2. |
A solid can resist which of the following stresses? |
| A. | Tensile |
| B. | Compressive |
| C. | Shear |
| D. | All of the above. |
| Answer» D. All of the above. | |
| 3. |
.......... possesses no definite volume and is compressible. |
| A. | Solid |
| B. | Liquid |
| C. | Gas |
| D. | Vapour. |
| Answer» C. Gas | |
| 4. |
The ratio of the specific weight of the liquid to the specific weight of a standard fluid is known as |
| A. | Specific volume |
| B. | Weight density |
| C. | Specific gravity |
| D. | Viscosity. |
| Answer» C. Specific gravity | |
| 5. |
The property of a fluid which determines its resistance to shearing stress is called |
| A. | Viscosity |
| B. | Surface tension |
| C. | Compressibility |
| D. | None of the above. |
| Answer» A. Viscosity | |
| 6. |
Fluids which do not follow the linear relationship between shear stress and rate of deformation are termed as.... fluids. |
| A. | Newtonian |
| B. | Non-Newtonian |
| C. | Dilatant |
| D. | ideal |
| Answer» B. Non-Newtonian | |
| 7. |
The printer’s ink is an example of |
| A. | Newtonian fluid |
| B. | Non-Newtonian |
| C. | Thixotropic substance |
| D. | Elastic solid. |
| Answer» C. Thixotropic substance | |
| 8. |
The viscosity of liquids ..... with increase in temperature. |
| A. | Decreases |
| B. | Increases |
| C. | First decreases and then increases |
| D. | First increases and then decreases. |
| Answer» A. Decreases | |
| 9. |
Surface tension is caused by the force of ..... at the free surface. |
| A. | Cohesion |
| B. | Adhesion |
| C. | Both (a) and (b) |
| D. | None of the above. |
| Answer» A. Cohesion | |
| 10. |
Which of the following is an example of phenomenon of surface tension? |
| A. | Rain drops |
| B. | Rise of sap in a tree |
| C. | Break up of liquid jets |
| D. | All of the above. |
| Answer» D. All of the above. | |
| 11. |
Surface tension is expressed in |
| A. | N/m |
| B. | N/m2 |
| C. | N2/m |
| D. | N/m3 |
| Answer» A. N/m | |
| 12. |
Pressure inside a water droplet is given by the relation |
| A. | p = 4𝜎/d |
| B. | p = 3𝜎/d |
| C. | p = 8𝜎/d |
| D. | p = 16𝜎/d |
| Answer» A. p = 4𝜎/d | |
| 13. |
. ...... is a phenomenon by which a liquid rises into a thin glass tube above or below its general level. |
| A. | Surface tension |
| B. | Capillarity |
| C. | Cohesion |
| D. | Adhesion. |
| Answer» B. Capillarity | |
| 14. |
The capillary rise of water in the glass tube is given by |
| A. | h = 2σ/wd |
| B. | h = 3σ/wd |
| C. | h = 4σ/wd |
| D. | h = 6σ/wd |
| Answer» C. h = 4σ/wd | |
| 15. |
Elasticity of fluids is measured in terms of |
| A. | Young’s modulus of elasticity |
| B. | Shear modulus of elasticity |
| C. | Bulk modulus of elasticity |
| D. | None of the above. |
| Answer» C. Bulk modulus of elasticity | |
| 16. |
Compressibility is the reciprocal of |
| A. | Bulk modulus of elasticity |
| B. | Shear modulus of elasticity |
| C. | Young’s modulus of elasticity |
| D. | Any of the above. |
| Answer» A. Bulk modulus of elasticity | |
| 17. |
Bulk modulus of elasticity is the ratio of |
| A. | Tensile stress to tensile strain |
| B. | Compressive stress to compressive strain |
| C. | Compressive stress to volumetric strain |
| D. | None of the above. |
| Answer» C. Compressive stress to volumetric strain | |
| 18. |
The value of bulk modulus of elasticity .......... with increase of pressure. |
| A. | Increases |
| B. | Decreases |
| C. | Either of the above |
| D. | None of the above. |
| Answer» A. Increases | |
| 19. |
The pressure of a liquid on a surface will always act ...... to the surface. |
| A. | Parallel |
| B. | Normal |
| C. | 45° |
| D. | 60°. |
| Answer» B. Normal | |
| 20. |
The pressure ....... as the depth of the liquid increases. |
| A. | Increases |
| B. | Decreases |
| C. | Remain unchanged |
| D. | None of the above. |
| Answer» A. Increases | |
| 21. |
The intensity of pressure in a liquid due to its depth will vary .... with depth. |
| A. | Directly |
| B. | Indirectly |
| C. | Either of the above |
| D. | None of the above. |
| Answer» A. Directly | |
| 22. |
The height of the free surface above any point is known as |
| A. | Static head |
| B. | Intensity of pressure |
| C. | Either of the above |
| D. | None of the above. |
| Answer» A. Static head | |
| 23. |
“The intensity of pressure at any point in a liquid at rest is the same in all directions.” The above statement is known as |
| A. | Kirchhoff’s law |
| B. | Pascal’s law |
| C. | Either of the above |
| D. | None of the above. |
| Answer» B. Pascal’s law | |
| 24. |
Any pressure measured above the absolute zero of pressure is termed as |
| A. | Atmospheric pressure |
| B. | Gauge pressure |
| C. | Either of the above |
| D. | None of the above |
| Answer» C. Either of the above | |
| 25. |
The fundamental S.I. unit of pressure is N/m2; this is also known as ...... |
| A. | Pascal |
| B. | Stoke |
| C. | Poise |
| D. | None of the above |
| Answer» A. Pascal | |
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