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Agricultural Engineering Gate 2017 Questions with Answer
Ques 27 GATE 2017
A tractor of 19.5 kN weight and 1.8 m wheel base has 70% static weight on the rear axle. It pulls 8 kN drawbar load parallel to the ground through a hitch point located 450 mm above the ground. The dynamic weight on the rear axle of the tractor under operating condition in kN will be
16 is the correct answer.
Ques 28 GATE 2017
A cylindrical shallow bin is filled with grains having angle of repose of 33°. The limiting height to diameter ratio of the bin is
1.84 is the correct answer.
Ques 29 GATE 2017
A cylindrical silo, 3 m in diameter and 20 m high, is filled with barley having bulk density of 625 kg/m³. Coefficient of friction between grain and the bin wall is 0.45 and the ratio of lateral pressure to vertical pressure is 0.4. The lateral pressure at the base of the bin in kPa will be
10.2 is the correct answer.
Ques 30 GATE 2017
The reaction rate for destruction of Clostridium botulinum increases 11 times for temperature rise of 10°C from 121.1°C. The decimal reduction time of this organism is 5.7 s at 121.1°C. The minimum sterilization time in seconds at 135°C, for eight log cycle reduction of the organism, is
Ques 31 GATE 2017
In a vertical tube single effect evaporator, the boiling film coefficient inside the tubes is 1350 W/m² K. Steam condensation film coefficient outside is 7500 W/m² K. Thermal conductivity of 20 tubes made of SS 304 is 16 W/m K. The vertical tubes are 4.3 m long and are of 25 mm ID and 27 mm OD, maintaining a steady 15°C temperature difference across the tube walls. Assume no boiling point rise, no heat losses, the feed enters the evaporator at the boiling point and the latent heat of vaporization of water is 2346.3 kJ/kg. Total water evaporation rate from the evaporator bundle of tubes in kg/h will be
168 is the correct answer.
Ques 32 GATE 2017
Hot water at 95°C is sent through a countercurrent tube-in-tube heat exchanger with cold water entering at 25°C. Hot/cold water specific heat capacity is 4.2 kJ/kg K. Flow rates of hot and cold water are 2.7 and 4.1 kg/min, respectively. Overall heat transfer coefficient is 55 W/m² K and the area of heat transfer is 5 m². Cold water outlet temperature from the heat exchanger in °C will be
55 is the correct answer.
Ques 33 GATE 2017
In a cold storage, 10 metric ton of potato is to be brought down from 30 to 8°C storage temperature in 6 hours of air blast at the evaporator temperature of -10°C. Specific heat capacity of potato is 3.2 kJ/kg K. COP of the refrigeration cycle deployed is 4.2 with evaporator load extraction capacity of 210 kJ/kg. Neglecting the respiration load of potato, the refrigerant flow rate and compressor power requirement will be
Ques 34 GATE 2017
Steam (h_f = 632.2, h_fg = 2113.2, h_g = 2745.4 kJ/kg) at 150°C is used to sterilize milk by direct steam injection. Milk is initially at 90°C and after sterilization, the blend of resultant milk and condensed steam (h_r = 567.6, h_fg = 2159.2, h_g = 2726.7 kJ/kg) are at 135°C. Specific heat capacity of milk is 3.8 kJ/kg K. Assuming no energy loss, the amount of milk in kg sterilized per kg steam supplied is
Ques 35 GATE 2017
A batch of 1000 kg of apples containing 6.2% bruised apples is sorted by an electronic colour sorter. The sorted apples contain 927.3 kg red apples and 17.4 kg bruised apples. Remaining red and bruised apples are delivered at the rejection outlet of the sorter. Overall effectiveness of the sorter is
0.71 is the correct answer.
Ques 36 GATE 2017
Spherical dust particles of 50 μm are settling under gravity in air at 21°C and normal atmospheric pressure. Density of particles is 1250 kg/m³ and density of air is 1.2 kg/m³. Considering viscosity of air as 1.81 × 10-5 Pa s, the settling velocity of dust in mm/s will be
94 is the correct answer.
Ques 37 GATE 2017
India's annual paddy production is 160 million ton clean paddy basis. Average husk content of paddy is 22% and milled rice yield is 70%. Considering 18% oil content in bran fraction and calorific value of 12 MJ/kg of husk, the oil potential of bran and energy potential of husk will respectively be
Ques 38 GATE 2017
The ways in which this game can be played is/are potentially infinite.
Ques 39 GATE 2017
If you choose plan P, you will have to _____ plan Q, as these two are mutually _____.
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