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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