McqMate
Chapters
| 1. |
The intensity of pressure p is related to specific weight w of the liquid and vertical depth h of the point by the equation |
| A. | p = wh |
| B. | h = pw |
| C. | p = wh2 |
| D. | p = wh3. |
| Answer» A. p = wh | |
| 2. |
The point of application of the total pressure on the surface is |
| A. | Centroid of the surface |
| B. | Centre of pressure |
| C. | Either of the above |
| D. | None of the above. |
| Answer» B. Centre of pressure | |
| 3. |
If A is the area of the immersed surface, w is the specific weight of the liquid and ͞x is the depth of horizontal surface from the liquid surface, then the total pressure P on the surface is given by |
| A. | p = wA2 ͞x |
| B. | p = w2A ͞x |
| C. | p = wA ͞x |
| D. | p = wA ͞x2 |
| Answer» C. p = wA ͞x | |
| 4. |
The side of the dam to which the water from the river or the stream approaches is known as |
| A. | Downstream |
| B. | Upstream |
| C. | Either of the above |
| D. | None of the above. |
| Answer» B. Upstream | |
| 5. |
Lock gates are provided to |
| A. | Change the water level in a canal or river for irrigation |
| B. | Store water for irrigation purpose |
| C. | Either of the above |
| D. | None of the above. |
| Answer» A. Change the water level in a canal or river for irrigation | |
| 6. |
The term........ means the study of pressure exerted by a fluid at rest. |
| A. | Hydrostatics |
| B. | Fluid mechanics |
| C. | Continuum |
| D. | Kinetics |
| Answer» A. Hydrostatics | |
| 7. |
The tendency for an immersed body to be lifted up in the fluid, due to an upward force opposite to the action of gravity is known as |
| A. | Buoyancy |
| B. | Centre of buoyancy |
| C. | Buoyant force |
| D. | None of the above. |
| Answer» A. Buoyancy | |
| 8. |
The magnitude of the buoyant force can be determined by |
| A. | Newton’s second law of motion |
| B. | Archimedes’ principle |
| C. | Principle of moments |
| D. | None of the above. |
| Answer» B. Archimedes’ principle | |
| 9. |
When a body is immersed in a fluid, partially or completely, the force of buoyancy is equal to |
| A. | The weight of the body |
| B. | The weight of the fluid displaced by the body |
| C. | The weight of the volume of the fluid equal to the volume of body |
| D. | None of the above. |
| Answer» B. The weight of the fluid displaced by the body | |
| 10. |
The point of application of the force of buoyancy on the body is known as |
| A. | Centre of gravity |
| B. | Centre of buoyancy |
| C. | Metacenter |
| D. | None of the above. |
| Answer» B. Centre of buoyancy | |
| 11. |
“When a body is immersed in a fluid either wholly or partially, it is buoyed or lifted up by a force which is equal to the weight of fluid displaced by the body”. This principle was enunciated by |
| A. | Archimedes |
| B. | Newton |
| C. | Pascal |
| D. | Kirchhoff. |
| Answer» A. Archimedes | |
| 12. |
A floating body is in stable equilibrium when |
| A. | The metacentre is below its centre of gravity |
| B. | The metacentre is above its centre of gravity |
| C. | The metacentric height is zero. |
| D. | Its centre of gravity is below the centre of buoyancy. |
| Answer» B. The metacentre is above its centre of gravity | |
| 13. |
An ice-cube is floating in glass of water. As the cube melts the water level |
| A. | Remain constant |
| B. | Falls |
| C. | Rises |
| D. | None of the above. |
| Answer» B. Falls | |
| 14. |
Metacentric height can be determined by |
| A. | Only analytical method |
| B. | Only experimental method |
| C. | Both (a) and (b) |
| D. | None of the above. |
| Answer» C. Both (a) and (b) | |
| 15. |
If a body does not return to its original position from the slightly displaced angular position and heels farther away, when given a small angular displacement; such an equilibrium is called |
| A. | Stable equilibrium |
| B. | Unstable equilibrium |
| C. | Neutral equilibrium |
| D. | Any of the above |
| Answer» B. Unstable equilibrium | |
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