Irrigation Engineering If the risk of a flood occurring in the next 10 years is accepted to 10%, then the return period for design should be 1 + (0.9)010 1 – (0.9)°l0 1/(1+ 0.9010) 1/(1-0.9°10) 1 + (0.9)010 1 – (0.9)°l0 1/(1+ 0.9010) 1/(1-0.9°10) ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering For a standing crop, the consumptive use of water is equal to the depth of water Evaporated by the crop Used by the crop in transpiration, evaporation and also the quantity of water evaporated from adjacent soil Transpired by the crop Transpired and evaporated by the crop Evaporated by the crop Used by the crop in transpiration, evaporation and also the quantity of water evaporated from adjacent soil Transpired by the crop Transpired and evaporated by the crop ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering If the straight sides of a triangular section of a lined canal with circular bottom of radius D, make an angle ? with horizontal, the hydraulic mean depth is D/2 D/3 D/5 D D/2 D/3 D/5 D ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering A minimum of 90 cm free board is provided if the discharge in the canal is between 30 to 60 cumecs Over 60 cumecs 30 to 33 cumecs Over 100 cumecs 30 to 60 cumecs Over 60 cumecs 30 to 33 cumecs Over 100 cumecs ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering If D is the depth of water upstream of the throat above its sill, B is the width of the throat, to achieve critical flow in an open venturi flume, the theoretical maximum flow Q, is Q = 1.71 BD3/2 Q = 1.71 BD Q = 1.71 BD1/2 Q = 1/71 BD2/3 Q = 1.71 BD3/2 Q = 1.71 BD Q = 1.71 BD1/2 Q = 1/71 BD2/3 ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering The net speed under which the turbine reaches its peak efficiency is called rated speed operating speed design speed gross speed rated speed operating speed design speed gross speed ANSWER DOWNLOAD EXAMIANS APP
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