Question 111. During land leveling of agricultural land for irrigation and drainage purposes, the acceptable deviation in elevation from the design value in metre is

Question 112. If the drainable porosity of a command area is 5% and the design rate of drop of the water table is 0.25 m day-1, the drainage coefficient of the command area in mm day-1 will be

Question 113. A 100 ha watershed received rainfall at a rate of 5 cm h-1 for 2 hours. If the runoff generated by the storm was at the rate of 1 m3 s-1 for 10 hours, the runoff coefficient for the watershed would be

Question 114. The work index of a material is 6.25. If 80% of the feed and 80% of the product pass through IS Sieve No. 340 (3.25 mm opening) and IS Sieve No. 40 (0.42 mm opening), respectively, the power consumed in kW to crush 5000 kg h-1 of sorghum is

Question 115. A watershed, with an area of 360 km2, has a triangular shaped 4-h unit hydrograph with a base of 50 hours. The peak discharge of direct runoff hydrograph due to 3 cm of rainfall-excess in 4 hours from the watershed in m3 s-1 is

Question 116. A 10 ha field has 1.2 m deep layer of sandy loam soil underlain by sandy soil up to a depth of 5 m. A pre-irrigation rainfall brings moisture content of the top 0.3 m layer to its field capacity. The moisture content of rest of the sandy loam layer remains at permanent wilting point. The volumetric moisture content at field capacity and permanent wilting point are 32 and 16%, respectively for the sandy loam soil. The field is irrigated with a stream size of 240 L s-1 for 24 hours. Considering the drainage from the sandy loam soil as deep percolation, application efficiency and deep percolation ratio in percent respectively are

Question 117. A rotary dryer is used to dry 1200 kg h-1 of paddy containing 30% moisture (wet basis) to give a product containing 15% moisture (wet basis). Alternately, a portion of the dry product may be recycled and mixed with the fresh feed such that the mixed feed enters the dryer with moisture content of 20% (wet basis). The moisture evaporation rate without recycle and the paddy recycle rate in kg h-1 respectively in the dryer are