Irrigation Engineering If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the perimeter of the canal is 2R (θ + tan θ) R (θ + cos θ) 2R (θ + cos θ) R (θ + tan θ) 2R (θ + tan θ) R (θ + cos θ) 2R (θ + cos θ) R (θ + tan θ) ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering If D is the depth of scour below original bed, then the width of launching apron is generally taken as 2.0 D 1.2 D 2.5 D 1.5 D 2.0 D 1.2 D 2.5 D 1.5 D ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering As compared to gravity dams, earthen dams are less susceptible to failure require less skilled labour require sound rock foundations are costlier are less susceptible to failure require less skilled labour require sound rock foundations are costlier ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering According to Lacey, in regime conditions Neither (a) nor (b) Both (a) and (b) Silt is kept in suspension by vertical components of eddies Entire cross-section of the channel is generated at all points by the forces normal to the Neither (a) nor (b) Both (a) and (b) Silt is kept in suspension by vertical components of eddies Entire cross-section of the channel is generated at all points by the forces normal to the ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering Bed bars in a canal are provided To measure the discharge To raise the supply level To watch the general behavior of canal To control the silting To measure the discharge To raise the supply level To watch the general behavior of canal To control the silting ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the underside of the supporting structure, the structure so provided, is called Aqueduct Syphon Syphon-aqueduct Super passage Aqueduct Syphon Syphon-aqueduct Super passage ANSWER DOWNLOAD EXAMIANS APP
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