Candidates can prepare for the GATE Exam (2015) by referring the questions (and the answer key) of the previous year GATE exam (2014). 5 questions asked in Agricultural Engineering Paper of Engineering Exam 2014 are as follows:

1. 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

2. A partial differential equation containing dependent variable u is given by

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

4. The brake power of a four-cylinder engine is 30 kW with all cylinders firing and 20 kW with any one cylinder cut. The mechanical efficiency of the engine in percent is

(A) 60
(B) 67
(C) 75
(D) 83

5. A tractor is provided with an Ackerman steering gear mechanism. If b is the wheel base, c the distance between the front wheel pivot points, ? the steering angle of the inner wheel and f the steering angle of the outer wheel, the fundamental relationship to be satisfied to avoid skidding of the two front wheels during a turn is given by

Click here to get full question paper on the official website of GATE