Agricultural Studies > EXAM > BRAE Midterm 1 Problem Sets & Top Hat Questions (UPDATED 2022) with COMPLETE SOLUTION (38 PAGES) (All)

BRAE Midterm 1 Problem Sets & Top Hat Questions (UPDATED 2022) with COMPLETE SOLUTION (38 PAGES)

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What is the common method for describing how much water to apply to meet the crop needs? a Inches b Gallons per minute c Cubic feet d Acres - ✔✔A. Inches Which of the following is considered ... a beneficial use of water? a Wind drift b Deep percolation c Uncollected runoff d Soil preparation - ✔✔D Soil Prepation Which of these can be a unit of pressure? a ft b gal c sq in d acre-in - ✔✔A. Feet An alfalfa crop uses 0.32 inches per day. How many days will it take to extract 4.52 inches from the soil? - ✔✔o 4.52 / 0.32 = 14.25 days 14.1 An elevated water tank is used to feed water into a drip system. How high (feet) must the tank outlet be in order to have 26 psi pressure at the inlet to the drip system? - ✔✔26 psi x 2.31 ft = 60.06Water has been turned into a 4 acre reservoir until it stands 3 inches deep. What volume of water has been added in ac-ft? a 1 b 7 c 12 d 0.75 - ✔✔A. 1 12/ 12 A pump must deliver water to an irrigation system on the top of a hill, which is 192 feet above the pump. What should the pump outlet pressure (psi) be in order to raise water just to the top of the hill (ignore losses)? - ✔✔o 1 psi = 2.31 feet o 192 feet / 2.31 feet = 83.12 What salinity (ds/m) is equivalent to a soil moisture tension of 0.43 bars? a 1.23 b 1.43 c 1.54 d 1.70 - ✔✔0.43 bars / 0.3 bars = 1.43 ds/m B A metric sprinkler catalog shows a sprinkler that delivers 0.50 liters per second (Lps) at an operating pressure of 314 kiloPascals (kPa). What is the sprinkler operating pressure in feet of water? - ✔✔Convert kPa into feet of pressure [Show More]

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