| 16. | In frictional fluid flow, the following quantity is
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| a. | constant along a streamline. |
| b. | not constant along a streamline. |
| c. | increased in the direction of flow. |
| d. | none of these. |
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Answer: (b).not constant along a streamline.
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| 17. | What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water iterface? The balloon is of radius 0.1 m and is filled with air.
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| a. | A |
| b. | B |
| c. | C |
| d. | D |
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Answer: (a).A
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| 18. | For the manometer set up shown in the figure, the pressure difference Pᴀ - Pʙ is given by
  |
| a. | A |
| b. | B |
| c. | C |
| d. | D |
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Answer: (a).A
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| 19. | Drag co-officient Cᴅ, in Stoke's law range is given by
 |
| a. | A |
| b. | B |
| c. | C |
| d. | D |
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Answer: (b).B
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| 20. | In power law, consider the following equation, then the fluid is
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| a. | Newtonian |
| b. | dilatant |
| c. | thixotropic |
| d. | rheopectic |
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Answer: (a).Newtonian
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