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451.

For the matrix the eigenvalue corresponding to the eigenvector is :
[2 marks]
(A) 2
(B) 4
(C) 6
(D) 8

asked in Electronics and Communication Engineering, 2006

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452.

Three companies, X, Y and Z supply computers to a university. The percentage of computers supplied by them and the probability of those being defective are tabulated below.

Company % of computers supplied
Probability of being defective

X 60% 0.01

Y 30% 0.02

Z 10% 0.03

Given that a computer is defective, the probability that it was supplied by Y is: [2 marks]
(A) 0.1
(B) 0.2
(C) 0.3
(D) 0.4

asked in Electronics and Communication Engineering, 2006

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453.

The integral _o∫^π sin³θ dθ is given by [2 marks]
(A) 1/2
(B) 2/3
(C) 4/3
(D) 8/3

asked in Electronics and Communication Engineering, 2006

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454.

The value of the contour integral ∮_|z-j|=2 1/(z²+4) dz in positive sense is
[2 marks]
(A) jπ/2
(B) -π/2
(C) -jπ/2
(D) π/2

asked in Electronics and Communication Engineering, 2006

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455.

For the function of a complex variable W = ln Z (where, W = u + jv and Z = x+jy), the u = constant lines get mapped in Z-plane as [2 marks]
(A) set of radial straight lines
(B) set of concentric circles
(C) set of confocal hyperbolas
(D) set of confocal ellipses

asked in Electronics and Communication Engineering, 2006

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456.

The eigenvalues and the corresponding eigenvectors of a 2 × 2 matrix are given by

The matrix is: [2 marks]

asked in Electronics and Communication Engineering, 2006

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806 1 ...‹‹74 7576 77 78 ›› ... 135

Company	% of computers supplied	Probability of being defective
X	60%	0.01
Y	30%	0.02
Z	10%	0.03

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