GATE 2017-2018 :: GATE Agricultural
- During a test, sound level was measured as 90 dB in the operator's cabin on a tractor. Taking reference sound pressure as 2 * 10-5 N m-2, the measured RMS sound pressure in N m-2 is
- During land leveling of agricultural land for irrigation and drainage purposes, the acceptable deviation in elevation from the design value in metre is
- The gridiron pipe drainage system is more economical than the herringbone pipe drainage system because
- 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
- A soil has a void ratio of 0.75 and a specific gravity of 2.66. The value of critical hydraulic gradient at which quick sand condition will occur is
- The pressure that does not have any measurable influence on the void ratio or shearing resistance of the soil mass is
- The Rational method is used to estimate
- Pan evaporation data recorded at a certain location over a period of one week are 4.0, 4.3, 4.6, 4.9, 5.12, 5.18, and 6.21 mm. If irrigation scheduling based on ratio of irrigation water (IW) to cumulative pan evaporation (CPE) is practiced, the depth of irrigation at an interval of a week for IW/CPE = 0.9 is
- A 16 m high wind break is constructed to protect soil from wind erosion due to wind velocity of 18 m s-1 at 15 m height. The minimum wind velocity at 15 m height capable of moving the soil fraction is 8 m s-1. The angle of deviation of prevailing wind direction from the perpendicular to the wind break is 300. The distance of full protection from the wind break in m is
- Milk enters into the heating section of a high temperature short time (HTST) pasteurization plant at a temperature of 45ºC and leaves at 72ºC. Hot water at temperature of 95 ºC enters countercurrently into the heat exchanger and leaves at 77ºC. The effectiveness of the heat exchanger is
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