Irrigation Engineering According to G.W. Pickles the effect of confining the flood water of a river between levee, is to increase Surface slope of streams above the levied portion Rate of flood wave Water surface elevation during floods Maximum discharge Surface slope of streams above the levied portion Rate of flood wave Water surface elevation during floods Maximum discharge ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering Retrogression of the bed level of a river downstream a weir, occurs due to Soft soil strata Increase of the bed level Less percentage of silt Heavy impact of water Soft soil strata Increase of the bed level Less percentage of silt Heavy impact of water ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering If the irrigation efficiency is 80%, conveyance losses are 20% and the actual depth of watering is 16 cm, the depth of water required at the canal outlet, is 10 cm 25 cm 20 cm 15 cm 10 cm 25 cm 20 cm 15 cm ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering Presence of tail water in a gravity dami) increases the principal stressii) decreases the principal stressiii) increases the shear stressiv) decreases the shear stressThe correct answer is (ii) and (iii) (i) and (iii) (ii) and (iv) (i)and(iv) (ii) and (iii) (i) and (iii) (ii) and (iv) (i)and(iv) ANSWER DOWNLOAD EXAMIANS APP
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)°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) 1 + (0.9)010 ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering Side slopes generally kept for canals in loam soil, are: Neither (A) nor (B) 1 : 1 in cutting and 1½ : 1 in filling Both (A) and (B) 1½ : 1 in cutting and 2 : 1 in filling Neither (A) nor (B) 1 : 1 in cutting and 1½ : 1 in filling Both (A) and (B) 1½ : 1 in cutting and 2 : 1 in filling ANSWER DOWNLOAD EXAMIANS APP
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