SSC JE 2019-20: Technical Quiz 68 for ESE & GATE CE Exams

Question 1

Consider the following statement and determine which of the following is correct:
i) The moving boat method is used for determining the discharge of the alluvial river
ii) Storativity has no dimension and important for yield from an aquifer
iii) Evaporation increases with the decrease in atmospheric pressure
iv) Discharge during falling stage is always less than rising stage

Question 2

Select the correct principles, which are given below, to be consider for draw the hydrograph when excess rainfall is about 1cm.
1) The whole area of drainage basin distributed by effective rainfall uniformly.
2) Hydrograph of direct run off from basin due to a given period of effective rainfall reflects the combination of all the physical characteristics of the basin.
3) Effective rainfall is not uniformly distributed throughout the rainfall duration.
4) The hydrographs of direct runoff due to effective rainfall of equal duration have the same time base

Question 3

Find the corresponding hydraulic conductivity of aquifer when discharge through the aquifer is 1500 m³/day. The length and width of the aquifer normal to the discharge direction is 10,000 m and 1500 m respectively. 300 m and 250 m are the hydraulic heads at the entry and exits points of aquifer respectively.