Mechanical Engineering - Hydraulics and Fluid Mechanics
Exercise :: Hydraulics and Fluid Mechanics - Section 5
| 46. |
A notch is used to measure __________ of liquids. |
| A. |
pressure | | B. |
discharge | | C. |
velocity | | D. |
volume |
Answer: Option B
Explanation:
|
| 47. |
A flow is called sonic, if the Mach number is unity. |
Answer: Option A
Explanation:
|
| 48. |
An error of 1% in measuring head over the crest of the notch (H) will produce an error of __________ in discharge over a triangular notch, |
Answer: Option D
Explanation:
|
| 49. |
A flow through a long pipe at decreasing rate is called __________ uniform flow. |
Answer: Option B
Explanation:
|
| 50. |
The surface tension of mercury at normal temperature is __________ that of water. |
| A. |
same as | | B. |
lower than | | C. |
higher than |
Answer: Option C
Explanation:
|
