Electrical Engineering Gate 2016 Set-1 Questions with Answer

Ques 27 GATE 2016 SET-1


In cylindrical coordinate system, the potential produced by a uniform ring charge is given by φ = f(r,z), where f is a continuous function of r and z. Let E⃗ be the resulting electric field. Then the magnitude of ∇ x E⃗

A

increases with r.

B

is 0.

C

is 3.

D

decreases with z.


(b) is the correct answer.

Ques 28 GATE 2016 SET-1


A soft-iron toroid is concentric with a long straight conductor carrying a direct current I. If the relative permeability μr of soft-iron is 100, the ratio of the magnetic flux densities at two adjacent points located just inside and just outside the toroid, is ________.


(100) is the correct answer.

Ques 29 GATE 2016 SET-1


Two electric charges q and -2q are placed at (0,0) and (6,0) on the x-y plane. The equation of the zero equipotential curve in the x-y plane is

A

x = -2

B

y = 2

C

x2+y2 = 2

D

(x+2)2+y2 = 16


(d) is the correct answer.

Ques 30 GATE 2016 SET-1


The maximum value attained by the function f(x) = x(x-1)(x-2) in the interval [1, 2] is ________.


(0.3849) is the correct answer.

Ques 31 GATE 2016 SET-1


Consider a 3x3 matrix with every element being equal to 1. Its only non-zero eigenvalue is ________.


(3) is the correct answer.

Ques 32 GATE 2016 SET-1


The Laplace Transform of f(t) = e2tsin(5t)u(t) is

A

5 / (s2 - 4s + 29)

B

5 / (s2 + 5)

C

(s-2) / (s2 - 4s + 29)

D

5 / (s+5)


(a) is the correct answer.

Ques 33 GATE 2016 SET-1


A function y(t), such that y(0)=1 and y(1)=3e-1, is a solution of the differential equation d2y/dt2 + 2(dy/dt) + y = 0. Then y(2) is

A

5e-1

B

5e-2

C

7e-1

D

7e-2


(b) is the correct answer.

Ques 34 GATE 2016 SET-1


The value of the integral ∫c (2z+5)/((z-1/2)(z2-4z+5)) dz over the contour |z|=1, taken in the anti-clockwise direction, would be

A

(24πi)/13

B

(48πi)/13

C

24/13

D

12/13


(b) is the correct answer.

Ques 35 GATE 2016 SET-1


Candidates were asked to come to an interview with 3 pens each. Black, blue, green and red were the permitted pen colours that the candidate could bring. The probability that a candidate comes with all 3 pens having the same colour is ________.


(0.0625) is the correct answer.

Ques 36 GATE 2016 SET-1


Let S = Σn=0n where |α|<1. The value of α in the range 0 < α < 1, such that S = 2α is ________.


(0.2928) is the correct answer.

Ques 37 GATE 2016 SET-1


Let the eigenvalues of a 2x2 matrix A be 1, -2 with eigenvectors x1 and x2 respectively. Then the eigenvalues and eigenvectors of the matrix A2 - 3A + 4I would, respectively, be

A

2, 14; x1, x2

B

2, 14; x1+x2, x1-x2

C

2, 0; x1, x2

D

2, 0; x1+x2, x1-x2


(a) is the correct answer.

Ques 38 GATE 2016 SET-1


Let A be a 4x3 real matrix with rank 2. Which one of the following statement is TRUE?

A

Rank of ATA is less than 2.

B

Rank of ATA is equal to 2.

C

Rank of ATA is greater than 2.

D

Rank of ATA can be any number between 1 and 3.


(b) is the correct answer.

Ques 39 GATE 2016 SET-1


The man who is now Municipal Commissioner worked as

A

the security guard at a university

B

a security guard at the university

C

a security guard at university

D

the security guard at the university


(b) is the correct answer.

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