Agricultural Engineering Gate Yearwise
Agricultural Gate 2024
Agricultural Gate 2023
Agricultural Gate 2022
Agricultural Gate 2021
Agricultural Gate 2020
Agricultural Gate 2019
Agricultural Gate 2018
Agricultural Gate 2017
Agricultural Gate 2016
Agricultural Gate 2015
Agricultural Gate 2014
Agricultural Gate 2013
Agricultural Engineering Gate 2019 Questions with Answer
Ques 27 GATE 2019
A tube-in-tube counter-flow heat exchanger is heating oil from 35 °C to 77 °C by circulating hot water at 100 °C. The outlet temperature of water is 70 °C. The log-mean-temperature difference (LMTD) is
Ques 28 GATE 2019
In a rubber roll sheller, 250 mm diameter rolls are set at a clearance of 1 mm. If the mean thickness of paddy grains being shelled is 2 mm, the length of husking zone in mm (rounded off to two decimal places) is.
22.25 is the correct answer.
Ques 29 GATE 2019
Air-water vapour mixture at 1 atmosphere pressure has 0.035 kg water vapour (kg dry air)⁻¹ and dry bulb temperature of 37 °C. The value of Universal gas constant is 8.314 kJ (kg mole K)⁻¹. The humid volume of this air-water vapour mixture in m³ (kg dry air)⁻¹ (rounded off to three decimal places) is.
0.925 is the correct answer.
Ques 30 GATE 2019
A cream separator has discharge radii of 6 cm and 9 cm and the density of cream and skim milk are 860 and 1035 kg m⁻³, respectively. The ideal radius (in meter) for placing the feed inlet is
Ques 31 GATE 2019
Head rice contents in the samples collected at feed inlet, head rice outlet and broken rice outlet of an indented cylinder grader are 82%, 94% and 15%, respectively. If the grader receives the feed at 1200 kg h⁻¹, the flow rate (in kg h⁻¹) of head rice in the broken rice stream is
Ques 32 GATE 2019
A batch of 100 kg grain at 32% moisture content (wet basis) is being dried using hot air at 70 °C and 30% RH. The values of Henderson equation's constants c and n for the grain are 8.5×10⁻⁶ and 2.07, respectively. Considering the maximum possible drying of the batch, the quantity of moisture removed in kg is
Ques 33 GATE 2019
A chiller working on mechanical vapour compression refrigeration system (COP = 4.5) is used for cooling 12500 kg of fresh cow milk (cp = 3.8 kJ kg⁻¹ K⁻¹) from 30 °C to 4 °C in 3 hours. Assuming ideal compression process, the power consumed by the electric motor in kW and the tonnage of refrigeration (TR), respectively are
Ques 34 GATE 2019
Two streams of air with the following conditions are adiabatically mixed:
Specific heat capacity of dry air = 1.005 kJ kg⁻¹ K⁻¹
Specific heat capacity of water vapour = 1.880 kJ kg⁻¹ K⁻¹
Using above values, the dry bulb temperature and the absolute humidity of the mixed air in °C and g water vapour (kg dry air)⁻¹, respectively are
Ques 35 GATE 2019
Angle of internal friction of a certain grain (bulk density = 650 kg m³) is 30°. A bin filled with this grain experiences a pressure of 60 kPa at its base. Ignoring the factor of safety, the safe height (in meter) to which water (density = 1000 kg m³) can be filled in this bin (rounded off to two decimal places) is
2.05 is the correct answer.
Ques 36 GATE 2019
The steady-state mass transfer coefficient (k_g) based on water vapour pressure differential (VPD) operating across stagnant, non-diffusing air was estimated to be 0.05 g mole s⁻¹ m² kPa⁻¹. If VPD varies from 12 kPa to 7 kPa over a distance of 2 mm, then the mass transfer coefficient (k_y') based on equimolar counter-diffusion in g mole s⁻¹ m⁻² (mole fraction)⁻¹ (rounded off to one decimal place) is
4.6 is the correct answer.
Ques 37 GATE 2019
In an air blast freezing operation, a flat tray of 1.0 m×1.0 m×0.02 m dimensions is used to freeze filled depodded peas. Bulk density and moisture content of peas are 550 kg m³ and 85% (w.b.), respectively. Latent heat of freezing from water to ice at -1 °C is 335 kJ kg⁻¹ and heat transfer occurs identically from the top and the bottom surfaces of the tray. Convective film heat transfer coefficient on the heat transfer surfaces of the tray is 30 W m² K⁻¹ and the thermal conductivity of frozen peas is 0.54 W m⁻¹ K⁻¹. Assuming the tray to be a semi-infinite slab, the freezing time (in minutes) to completely freeze the product (rounded off to one decimal place) is
marks to all is the correct answer.
Ques 38 GATE 2019
The fishermen, ________ the flood victims owed their lives, were rewarded by the government.
Ques 39 GATE 2019
Some students were not involved in the strike. If the above statement is true, which of the following conclusions is/are logically necessary? 1. Some who were involved in the strike were students. 2. No student was involved in the strike. 3. At least one student was involved in the strike. 4. Some who were not involved in the strike were students.
Total Unique Visitors