# An irrigation stream of $27 \mathrm{~L} \mathrm{~s}^{-1}$ is diverted to a check basin of size $12 \mathrm{~m} \times 12 \mathrm{~m}$. The water holding capacity of the soil is $15 \%$ and the average soil moisture content in the crop root zone prior to applying water is $7.5 \% .$ The depth of crop root zone is $1.2 \mathrm{~m}$ and apparent specific gravity of the soil is $1.5 .$ Assuming no loss due to deep percolation, irrigation time (in minute) required to replenish the root zone moisture to its field capacity is____________

## Question ID - 156456 :- An irrigation stream of $27 \mathrm{~L} \mathrm{~s}^{-1}$ is diverted to a check basin of size $12 \mathrm{~m} \times 12 \mathrm{~m}$. The water holding capacity of the soil is $15 \%$ and the average soil moisture content in the crop root zone prior to applying water is $7.5 \% .$ The depth of crop root zone is $1.2 \mathrm{~m}$ and apparent specific gravity of the soil is $1.5 .$ Assuming no loss due to deep percolation, irrigation time (in minute) required to replenish the root zone moisture to its field capacity is____________

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Answer Key : (12 to 12) -

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Angle of internal friction of a certain grain (bulk density $=650 \mathrm{~kg} \mathrm{~m}^{-3}$ ) is $30^{\circ} .$ A bin filled with this grain experiences a pressure of $60 \mathrm{kPa}$ at its base. Ignoring the factor of safety, the safe height (in meter) to which water (density $=1000 \mathrm{~kg} \mathrm{~m}^{-3}$ ) can be filled in this bin ( rounded off to two decimal places) is________ 