Civil Engineering - Water Resources Engineering
Exercise :: Water Resources Engineering - Section 1
| 21. |
The deficiency in rain catch due to vertical acceleration of air forced upward over the gauge, is |
| A. |
greater for heavy rain | | B. |
greater for lighter rain | | C. |
greater for large drops | | D. |
lesser for small rain drops. |
Answer: Option B
Explanation:
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| 22. |
If a gauge is installed perpendicular to the slope, its measurement is reduced by multiplying |
| A. |
sine of the angle of inclination with vertical | | B. |
cosine of the angle of inclination with vertical | | C. |
tangent of the angle of inclination with vertical | | D. |
calibration coefficient of the gauge. |
Answer: Option B
Explanation:
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| 23. |
For determination of average annual precipitation in a catchment basin, the best method is |
| A. |
Arithmetical method | | B. |
Thiessen's mean method | | C. |
Isohyetal method | | D. |
None of these. |
Answer: Option C
Explanation:
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| 24. |
While calculating the average depth of annual precipitation in a catchment basin, importance to individual raingauge station is given in |
| A. |
Arithmetical method | | B. |
Thiessen's mean method | | C. |
Isohyetal method | | D. |
both (a) and (b) | | E. |
both (b) and (c). |
Answer: Option E
Explanation:
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| 25. |
The critical depth in a channel can be produced |
| A. |
by raising the bottom of the channel | | B. |
by lowering the bottom of the channel | | C. |
by decreasing the width of the channel | | D. |
by increasing the width of the channel | | E. |
both (a) and (c) of above. |
Answer: Option E
Explanation:
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