Agricultural Engineering Gate 2019 Questions with Answer

Ques 53 GATE 2019

A 20 cm diameter well fully penetrates a confined aquifer of thickness 20 m. After a long period of pumping at the rate of 1500 L min⁻¹, the steady drawdowns in the wells at 30 m and 50 m from the pumping well are found to be 2.0 m and 1.5 m, respectively. Assuming π = 3.14, the transmissivity of the aquifer in m² s⁻¹ is

Ques 54 GATE 2019

Water is flowing at a velocity of 1.6 m s⁻¹ in a pipe of diameter 8 cm and length 100 m. Assuming the value of coefficient of friction for pipe, f = 0.005 and acceleration due to gravity, g = 9.81 m s⁻², the head loss (in meter) due to friction in the pipe is

Ques 55 GATE 2019

The peak of a flood hydrograph due to a 5-hour storm is 670 m³ s⁻¹. The total depth of rainfall is 9 cm. Assuming an average infiltration loss of 0.2 cm h⁻¹ and a constant baseflow of 30 m³ s⁻¹, the peak discharge of the 5-hour unit hydrograph for this catchment in m³ s⁻¹ is.

Ques 56 GATE 2019

A parabolic grassed water channel 8 m wide at the top and 60 cm deep is laid on a slope of 3%. Assuming the value of 'n' in Manning's formula as 0.04 m⁻¹/³ s, the discharge capacity (in m³ s⁻¹) of the channel (rounded off to two decimal places) is.

Ques 57 GATE 2019

An irrigation stream of 27 L s⁻¹ is diverted to a check basin of size 12 m × 12 m. The water holding capacity of the soil is 15% and the average soil moisture content in the crop root zone prior to applying water is 7.5%. The depth of crop root zone is 1.2 m and apparent specific gravity of the soil is 1.5. Assuming no loss due to deep percolation, irrigation time (in minute) required to replenish the root zone moisture to its field capacity is

Ques 58 GATE 2019

The amount of biogas required to run a diesel engine is 0.65 m³ kW⁻¹ h⁻¹. The minimum size of the Deenbandhu model biogas plant in m³ required to run a 1 kW (brake power) diesel engine daily for one hour is

Ques 59 GATE 2019

A horizontal axis drag type wind rotor, fitted with 4 thin rectangular blades having drag coefficient 1.29, is used to extract power when the average wind velocity in the rotor plane is 10 km h⁻¹. The maximum power coefficient is

Ques 60 GATE 2019

A soil conservation structure has an expected life of 10 years and is designed for a flood magnitude of return period 50 years. The risk of this hydrologic design in percentage (rounded off to two decimal places) is.

Ques 61 GATE 2019

On a 4% land slope in a medium rainfall zone, the horizontal spacing of bunds in meter and the length of bunds per hectare in meter, respectively are

Ques 62 GATE 2019

A soil sample has a porosity of 40%. Void ratio of the soil sample is

Ques 63 GATE 2019

Tensiometer installed in the soil measures

Ques 64 GATE 2019

Undisturbed soil sample is collected from a field when the soil moisture is at field capacity. The inside diameter of the core sampler is 7.5 cm with a height of 15 cm. Weight of the core sampling cylinder with moist soil is 2.81 kg and that with oven dry soil is 2.61 kg. The weight of the core sampling cylinder is 1.56 kg. Assuming π = 3.14, the water depth in centimeter per meter depth of soil (rounded off to two decimal places) is

Ques 65 GATE 2019

Match the following items between Column-I and Column-II with the most appropriate combinations: Column-I 1) Uniformly spaced contour lines 2) Widely spaced contour lines 3) Closely spaced contour lines 4) A series of close contours with high value inside Column-II P) Flat ground Q) Steep ground R) Hill S) Uniform slope