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 2020 Questions with Answer
Ques 53 GATE 2020
A tubewell has a discharge of 40 m³ h-1 and operates daily for 20 h during irrigation season. The irrigation interval is 20 days and depth of irrigation is 8 cm. The command area of tubewell in ha is _______.
20 is the correct answer.
Ques 54 GATE 2020
The drainage coefficient of a watershed of 720 ha area is 1.2 cm. The design discharge of the drain in m³ s-1 is _______.
1 is the correct answer.
Ques 55 GATE 2020
In an irrigation channel of uniform section, water passes through a 90° triangular weir measuring 36 cm head over the crest. After traveling certain distance in the same channel, water passes through 1.0 m long rectangular weir. There is no loss of water in between two weirs. Using Francis' formula, the head over the crest of rectangular weir in cm is
Ques 56 GATE 2020
Two ends of a differential mercury manometer are connected at two points on a pipe carrying oil. The manometer shows difference in mercury level of 20 cm. The specific gravity of oil and mercury are 0.8 and 13.6, respectively. The density of water is 1000 kg m−3 at 4 °C and acceleration due to gravity (g) is 9.81 m s−2. At the same two points in pipe, the difference of pressure in N m−2 is
Ques 57 GATE 2020
A 40 cm diameter tubewell is constructed in a 10 m thick confined aquifer having hydraulic conductivity of 25 m day−1. The peizometric surface is observed to be 40 m high from the impervious stratum at the radius of influence of 500 m. The drawdown in the tubewell is 30 m. If the thickness of aquifer is doubled and diameter of tubewell is reduced to half, keeping all other parameters and conditions same, the change in discharge from the well is ____________. [Take π = 3.14]
Ques 58 GATE 2020
At the maximum power output of a solar panel, the voltage and current are 18 V and 5.56 A, respectively. If the open circuit voltage and short circuit current of the same solar panel are 21.6 V and 6.11 A, respectively, the fill factor of the panel (round off to 2 decimal places) is _______.
0.76 is the correct answer.
Ques 59 GATE 2020
A water pumping system is driven by a horizontal axis multi-bladed wind turbine at a power coefficient (Cp) of 0.4. The total pumping head and discharge are 20 m and 15 L s−1, respectively. The mean wind velocity is 8 m s−1 and the pump efficiency is 70%. The density of air and water are 1.2 and 1000 kg m−3, respectively. If the transmission efficiency from wind turbine to the pump is 90%, the required diameter of the wind turbine in m (round off to 2 decimal places) is _______.
6.95 is the correct answer.
Ques 60 GATE 2020
The following data were used for a watershed experiencing soil erosion problem:
Rainfall Erosivity Index = 280 MJ mm ha-1 h-1 year-1, Soil Erodibility Index = 0.38 ton ha h MJ-1 mm-1, Slope length = 200 m, Average slope of the land = 8%, Slope steepness factor = 0.85, Cropping management factor = 0.35, and Conservation practice factor = 0.60
If the slope length is reduced to half, percentage reduction in soil loss (round off to 2 decimal places) is _______.
29.30 is the correct answer.
Ques 61 GATE 2020
A retaining wall of 5 m height retains cohesionless dry soil having density of 1.9 Mg m−3 and angle of internal friction of 28°. The surface of the backfill soil is horizontal. The active and passive earth pressures per meter length of the wall in kN are ______ and ______, respectively. [Take g = 9.81 m s−2]
Ques 62 GATE 2020
The Curve Number (CN) of a watershed of 40 ha area under given hydrologic soil group, land use and management practices, and Antecedent Moisture Condition (AMC)-II is 80. The initial abstraction is 20% of maximum retention. For the rainfall event of 40 mm, the direct runoff in mm (round off to 2 decimal places) is _______.
8.20 is the correct answer.
Ques 63 GATE 2020
Match the following items between Column I and Column II with the most appropriate combinations:
Column I
P. Hydraulic Conductivity
Q. Permeability
R. Viscosity
S. Surface Tension
T. Saturation Capacity
U. Field Capacity
Column II
1. Upper limit of moisture available to plant
2. All soil pores are filled with water
3. Soil capillarity
4. Properties of fluid as well as soil
5. Property of the medium
6. Internal friction that brings about resistance to flow
Ques 64 GATE 2020
Area enclosed by different contours of a pond is given in the following Table. Using trapezoidal formula, the total estimated capacity of pond in m³ is_______.
4860 is the correct answer.
Ques 65 GATE 2020
The underside beam of a railway bridge, marked as permanent Bench Mark (BM) with Reduced Level (RL) of 85.168 m, is taken as reference for leveling operation. The Back Sight (BS) on the staff held vertically inverted to the BM is 3.645 m. For the Fore Sight (FS) of 1.523 m at a point in the construction site, the RL or elevation in m is _______.
80 is the correct answer.
Total Unique Visitors