Agricultural Engineering Gate 2014 Questions with Answer

Ques 1 GATE 2014


Oil yield (Yo) of mustard after N days of flowering is expressed as Yo = -0.0018 N² + 0.1319 N - 0.743 For maximum oil yield, optimum stage of harvesting, in days after flowering is,

A

23

B

29

C

37

D

39



Ques 2 GATE 2014


If two independent variables X and Y are uncorrelated then

A

Cov(X, Y) = 0

B

Cov(X, Y) > 0

C

Cov(X, Y) < 0

D

-1 < Cov(X, Y) < 1



Ques 3 GATE 2014


A partial differential equation containing dependent variable u is given by A ∂²u/∂x² + 2B ∂²u/∂x∂y + C ∂²u/∂y² + D ∂u/∂x + E ∂u/∂y + F u + G = 0 where A, B, C, D, E, F and G are constants or functions of independent variables x or y only. Also G ≠ 0. The nature of the equation is

A

Linear and homogeneous

B

Non-linear and homogeneous

C

Linear and non-homogeneous

D

Non-linear and non-homogeneous



Ques 4 GATE 2014


If f(x, y) = 3x² -4xy + 2y², the summation of ∂f/∂x and ∂f/∂y for x=1 and y=2 is _______.



Ques 5 GATE 2014


The eigenvalues of the matrix are

A

1 and 2

B

2 and 3

C

3 and 4

D

4 and 5



Ques 6 GATE 2014


The value of line integral I = ∫_C (x²y dx + (x-z) dy + (xyz) dz), where C is the arc of the parabola y = x² in the plane z = 2 from P(0,0,2) to Q(1,1,2), is

A

-43/15

B

43/15

C

-17/15

D

17/15



Ques 7 GATE 2014


Consider the following set of linear equations x₁ + x₂ + x₃ = 6; 2x₁ + 2x₂ + 3x₃ = 14; 3x₁ + x₂ + 2x₃ = 14. The solution for this set exists only when the value of x₂ is _______.



Ques 8 GATE 2014


If f(x) is a normal distribution with mean 8 and standard deviation 1, the value of f(x) for x = 10 is

A

0.05

B

0.14

C

0.25

D

0.73



Ques 9 GATE 2014


The value of ∫_0^{π/2} cos²x / (1 + sin x) dx is

A

0

B

π/2 - 1

C

2

D

π/2 + 1



Ques 10 GATE 2014


The day length (sunshine hours) on 31st May 2014 at a place in India (26°18’ N, 73°01’ E) will be___________.



Ques 11 GATE 2014


While operating a pedal thresher, 14 kg of paddy seed remained unthreshed for a throughput of 112 kg. If the quantity of the threshed seed obtained was 70 kg, the threshing efficiency in percent is

A

62.50

B

80.00

C

83.33

D

87.50



Ques 12 GATE 2014


A vertical conveyor reaper costing Rs. 75000 has a useful life of 8 years. Taking salvage value of the machine as 10% of the initial cost, the depreciated value after half of its useful life following straight line method will be Rs. ________.



Ques 13 GATE 2014


With increasing grain height in a deep cylindrical grain bin, the pressure at its base will

A

decrease initially and then increase

B

increase initially and then decrease

C

decrease initially and then remain constant

D

increase initially and then remain constant



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