Agricultural Engineering Gate Yearwise 



Agricultural Engineering Gate 2026 Questions with Answer

Ques 53 GATE 2026

In wind erosion, the amount of soil transported varies

A

directly as the cube of the threshold wind velocity and inversely as the square of the mean soil particle diameter

B

directly as the cube of the actual wind velocity and inversely as the square of the mean soil particle diameter

C

directly as the cube of the difference in actual and threshold wind velocity and the square of the mean soil particle diameter

D

directly as the cube of the difference in actual and threshold wind velocity and the square root of the mean soil particle diameter


(d) is the correct answer.

Ques 54 GATE 2026

When the bed slope of the discharge carrier in a chute spillway changes from steeper to milder, we provide a

A

concave vertical curve

B

convex vertical curve

C

reverse curve

D

converging transition


(b) is the correct answer.

Ques 55 GATE 2026

A natural colloidal clay, having the characteristics of absorbing water and swelling 8 to 15 times its dry size, used as an efficient and effective sealing material for farm ponds, is

A

EPDM (Ethylene Propylene Diene Monomer)

B

Butyl

C

Bentonite

D

Soil cement


(c) is the correct answer.

Ques 56 GATE 2026

By depth-area-duration analysis, the maximum average depth of rainfall over a 103 km2 catchment due to a 6-hour storm is 80 mm. For the same storm, the maximum average depth of rainfall for a 104 km2 catchment, in mm, is

A

greater than 88

B

lesser than 80

C

equal to 80

D

between 81 and 88


(b) is the correct answer.

Ques 57 GATE 2026

A tile drainage system having a drainage coefficient of 25 mm drains an area of 0.2 km2. The average discharge from the system (in m3.s−1) is ________. (Rounded off to three decimal places)


(0.058) is the correct answer.

Ques 58 GATE 2026

A homogeneous earthen embankment has an upstream water level of 12 m. The top width of the embankment is 3 m, and its upstream and downstream slopes (horizontal: vertical) are 2:1 and 2.5:1, respectively. A freeboard of 2 m is provided. The coefficient of permeability of the fill material is 2.5 × 10−5 m.s−1. If a 20 m long horizontal filter is placed inward from the downstream toe, the seepage discharge per unit length of the embankment is n × 10−5 m3.s−1.m−1. The value of n is ________. (Rounded off to two decimal places)


(0.88) is the correct answer.

Ques 59 GATE 2026

A 0.80 km2 agricultural watershed has a slope of 0.30% and the maximum length of travel of water is 1 km. The 10-year maximum depth of rainfall is tabulated below:


Duration (minutes): 5, 10, 20, 30, 40, 60
Maximum depth of rainfall (mm): 16, 24, 39, 50, 60, 65
Half of the watershed has row crops (runoff coefficient = 0.40), whilst the other half of the watershed has pasture (runoff coefficient = 0.35). The peak flow rate for the watershed (in m3.s−1) for the 10-year return period is ________. (Rounded off to two decimal places)


(0.72) is the correct answer.

Ques 60 GATE 2026

Two catchments M and N are meteorologically similar. The basin length (L), length to the centroid (Lca), and the drainage area (A) of catchment M are 36 km, 18 km, and 250 km2, respectively. The L, Lca and A for catchment N are 50 km, 30 km, and 400 km2, respectively.
For 6-h unit hydrograph in catchment M, the peak discharge of 50 m3.s−1 occurs at 12 h from the beginning of the rainfall excess. Using Snyder’s method, the peak of the 6-h unit hydrograph for catchment N (in m3.s−1) is ________. (Rounded off to two decimal places)


(65.10) is the correct answer.

Ques 61 GATE 2026

Two rectangular channels, A and B, join to form a large rectangular channel, C. Each rectangular channel is lined with the same material and has the same bottom slope. The bottom widths of Channels A and B are 2 m and 1 m, respectively. If the flow depth in each channel is 2 m, the bottom width of Channel C (in m) is ________. (Rounded off to two decimal places)


(5.04) is the correct answer.

Ques 62 GATE 2026

Bench terraces are planned on 15% hill slope. The vertical interval is 2.5 m, and the riser has a slope of 1:1. The earthwork in cutting is equal to the earthwork in filling. The volume of earthwork per hectare (in m3.ha−1) is ________ (Rounded off to the nearest integer)


(2083) is the correct answer.

Ques 63 GATE 2026

An undisturbed soil sample is collected from a field with core cylinder having an internal diameter of 60 mm and length of 100 mm. The weights of moist soil and oven dried soil are 0.48 kg and 0.44 kg, respectively. Assuming density of water as 1000 kg.m−3, the water depth (in metres per metre depth of soil) is ________ (Rounded off to two decimal places)


(0.14) is the correct answer.

Ques 64 GATE 2026

At an initial pressure of 100 kPa, 1 kg air is compressed reversibly from 15 litres to 1 litre at final pressure of 2000 kPa. Neglecting other losses, the Polytropic Exponent (n) is ________. (Rounded off to three decimal places)


(1.108) is the correct answer.

Ques 65 GATE 2026

A refrigeration system based on reverse Carnot cycle operates between −30 °C and 20 °C. The refrigeration capacity of the system is 70 kW. Heat rejected at the condenser to atmosphere (hot reservoir), in kW, is nearest to

A

84.40

B

14.41

C

186.67

D

116.67


(a) is the correct answer.

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