Agricultural Engineering Gate 2019 Questions with Answer

Ques 1 GATE 2019


0 dx / (x² + 1)² has the value

A

0.785

B

0.915

C

1.000

D

1.245



Ques 2 GATE 2019


The determinant of the matrix A = is

A

1

B

0

C

-1

D

2



Ques 3 GATE 2019


In a relay race there are five teams A, B, C, D and E. Assuming that each team has an equal chance of securing any position (first, second, third, fourth or fifth) in the race, the probability that A, B and C finish first, second and third, respectively is

A

1/60

B

1/20

C

1/10

D

3/10



Ques 4 GATE 2019


Using trapezoidal rule, the value of I = ∫4.05.2 ln(x) dx (rounded off to three decimal places) is.


1.825 is the correct answer.


Ques 5 GATE 2019


Two cards are drawn at random and without replacement from a pack of 52 playing cards. The probability that both the cards are black (rounded off to three decimal places) is.


0.245 is the correct answer.


Ques 6 GATE 2019


General solution to the differential equation y″ + 4y' + 5y = 0 is

A

e²ˣ (a cosx + b sin x)

B

e⁻²ˣ (a cos x + b sin x)

C

eˣ (a cos 2x + b sin 2x)

D

e⁻ˣ (a cos 2x + b sin 2x)



Ques 7 GATE 2019


For vectors F = 3xy î − y² ĵ and R = x î + y ĵ, the value of ∮C F.dR on the curve C (y = 2x²) in the x-y plane from (0, 0) to (1, 2) is

A

-1.17

B

1.50

C

-2.67

D

2.67



Ques 8 GATE 2019


Directional derivative of f(x, y, z) = xy² + yz³ at the point (2, -1, 1) in the direction of vector î + 2ĵ + 2k (rounded off to two decimal places) is.


-3.65 is the correct answer.


Ques 9 GATE 2019


The mean absolute deviation about the median for the data 3, 9, 5, 3, 12, 10, 18, 4, 7, 19, 21 (rounded off to two decimal places) is.


5.27 is the correct answer.


Ques 10 GATE 2019


The path traced by the material threshed between the cylinder and the concave of an axial flow thresher is

A

straight single pass and perpendicular to the cylinder shaft

B

curved and perpendicular to the cylinder shaft

C

helical and several times

D

straight and parallel to the cylinder shaft



Ques 11 GATE 2019


The farm machine/implement used only for preparing wetland is

A

rotavator

B

disk harrow

C

hydro-tiller

D

cultivator



Ques 12 GATE 2019


The type of typical spray distribution profile of a hollow cone nozzle is

A

steep sided slopes

B

gradual sloping sides

C

narrow topped with gradual slopes

D

narrow topped with steep sides



Ques 13 GATE 2019


Head pulley of a bucket elevator has an effective radius of 150 mm. In order to obtain the most satisfactory discharge from this elevator, the speed of the head pulley in rpm is

A

36

B

44

C

50

D

77



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