Irrigation Engineering The most suitable chemical which can be applied to the water surface for reducing evaporation is Methyl alcohol Ethyl alcohol Cetyl alcohol Butyl alcohol Methyl alcohol Ethyl alcohol Cetyl alcohol Butyl alcohol 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 20 cm 25 cm 15 cm 10 cm 20 cm 25 cm 15 cm 10 cm ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering As compared to gravity dams, earthen dams require less skilled labour are costlier are less susceptible to failure require sound rock foundations require less skilled labour are costlier are less susceptible to failure require sound rock foundations ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering The intensity of irrigation means Total depth of water supplied by the number of waterings Percentage of culturable commanded area to be irrigated annually Percentage of the mean of culturable commanded area and the gross commanded area to be irrigated annually Percentage of gross commanded area to be irrigated annually Total depth of water supplied by the number of waterings Percentage of culturable commanded area to be irrigated annually Percentage of the mean of culturable commanded area and the gross commanded area to be irrigated annually Percentage of gross commanded area to be irrigated annually ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering The uplift pressure on a dam can be controlled by i) constructing cutoff under upstream face ii) constructing drainage channels bet-ween the dam and its foundation iii) by pressure grouting in foundation The corret answer is only (i) both (i) and (ii) (i), (ii) and (iii) both (i) and (iii) only (i) both (i) and (ii) (i), (ii) and (iii) both (i) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering When surface of transpiration is submerged under water, then potential evapotranspiration is much less than evapotranspiration equal to evapotranspiration much more than evapotranspiration equal to or less than evapotranspi-ration much less than evapotranspiration equal to evapotranspiration much more than evapotranspiration equal to or less than evapotranspi-ration ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS