GATE 2017-2018 :: GATE Agricultural
- The equation representing the heat of respiration (q) of fruits and vegetables as a function of temperature (θ) with positive constants a and b is
- For an initial spore load equal to 25 spores per container inoculated with Clostridium botulinum having D121 = 0.25 min, the spoilage probability of the container subjected to F121 = 1.5 min is
- Slope and intercept of the BET equation relating [aw/x(1 - aw)] and aw, where aw is water activity and x is the moisture content on dry basis, are 18 and 2, respectively. The values of thermodynamic constant C and BET monolayer moisture content xm(%) are respectively
- A cold storage chamber is constructed with 10 mm mortar, 200 mm brick, 100 mm insulation and 5 mm wood-board having thermal conductivities of 0.8, 1.5, 0.025 and 0.2 W m-1 K-1, respectively. The resistance of 4 K m-1 W-1 is offered by
- The horse power of the motor running the compressor of a refrigerator having COP of 4.5 and extracting 200 kJ kg-1 of evaporating heat with 1.5 kg min-1 refrigerant flow rate is
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f(x) = e-x2 for x = 1.1, 1.2, 1.3, 1.4 and 1.5, the value of by
Simpson's 1/3rd rule is ______ - A tractor operated single acting trailing type disc harrow has 8 discs on each gang. The gang angle of both the gangs is maintained at 350. The horizontal component of resultant soil reaction force on each disc is 600 N and it makes an angle of 300 with the gang axis. If the speed of operation is 6 km h-1, the required drawbar power in kW to operate the harrow will be _______________
- A two-wheel drive tractor pulls an implement that has a draft force of 11.5 kN. The total motion resistance of the tractor is 2.5 kN. Under these circumstances, the slip of the drive wheels is 20%. If the power loss in transmission is 20%, the percentage of power lost in converting engine power into drawbar power is _______________
- An unconfined aquifer extends over an area of 1 m2 and has hydraulic conductivity, total porosity and specific retention of 20 m per day, 30% and 10%, respectively. After pumping some groundwater from this aquifer, the water table dropped to a depth of 20 m from the ground level. If the water table was initially at 14.5 m below the ground level, the change in groundwater storage in million cubic meters would be _______________
- Two parallel canals 50 m apart fully penetrate a homogeneous unconfined aquifer resting on a horizontal impermeable layer. The aquifer has a hydraulic conductivity of 3 m day-1 and an effective porosity of 0.25. One-dimensional steady groundwater flow occurs from the upper canal to the lower canal with the height of water levels in the canals 10 m and 8.5 m from the aquifer bottom, respectively. If a sediment layer of 4 cm thick with hydraulic conductivity of 1.2 * 10-2 m day-1is ultimately deposited on the inflow face, the groundwater discharge per 1000 m width between the two canals in m3 day-1 will be _______________
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