Que. |
Most accurate method for estimating mean rainfall over a catchment,is : |
- A. arithmetic mean method
- B. Thiessen's polygon method
- C. isohyetal method
- D. unit hydrograph method
Right Answer is :
✓ C. isohyetal method
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If absolutely no error is allowed in the measurement of mean rainfall in a catchment, then optimum number of rain gauge stations required, would be :
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Uplift pressure acting on a dam is controlled by :
Horizontal acceleration due to earthquake results in :
The thickness of concrete lining, for discharge upto 200 cumes varies from :
A standard project flood is :
If wind velocity at a height of 2 m above ground is 4.0 km per hour, then its value at a height of 10 m above ground can be expected to the about :
The force considered for the analysis of an elementary profile of a gravity dam under empty reservoir condition are: