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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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