E-PolyLearning

16. In frictional fluid flow, the following quantity is
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.

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.
a. A
b. B
c. C
d. D
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Answer: (a).A

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

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

20. In power law, consider the following equation, then the fluid is
a. Newtonian
b. dilatant
c. thixotropic
d. rheopectic
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Answer: (a).Newtonian

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