Mechanical Engineering - Hydraulics and Fluid Mechanics
Exercise :: Hydraulics and Fluid Mechanics - Section 3
| 16. |
The velocity corresponding to Reynold number of 2000 is called |
| A. |
sub-sonic velocity | | B. |
super-sonic velocity | | C. |
lower critical velocity | | D. |
higher critical velocity |
Answer: Option C
Explanation:
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| 17. |
The specific weight of water in S.I. units is taken as |
| A. |
9.81 kN/m3 | | B. |
9.81 x 103 kN/m3 | | C. |
9.81 x 10-6 N/mm3 | | D. |
any one of these |
Answer: Option A
Explanation:
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| 18. |
The loss of head at exit of a pipe is |
Answer: Option A
Explanation:
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| 19. |
The flow in a pipe is laminar, when Reynold number is less than 2000. |
Answer: Option A
Explanation:
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| 20. |
The power transmitted through the pipe is maximum when the head lost due to friction is equal to |
| A. |
one-fourth of the total supply head | | B. |
one-third of the total supply head | | C. |
one-half of the total supply head | | D. |
two-third of the total supply head |
Answer: Option B
Explanation:
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