1
GATE ECE 2006
MCQ (Single Correct Answer)
+2
-0.6
The following question refer to wide sense stationary stochastic process:

The parameters of the system obtained in Q. 12 would be

A
first order R-L low pass filter would have $$R = 4\Omega \,L = 1\,H$$
B
first order R-C high pass filter would have $$R = 4\Omega \,C = 0.25F$$
C
tuned L-C filter would have $$L = 4H\,\,C = 4F.$$
D
series R-L-C low pass filter would have $$R = 1\Omega ,\,L = 4H,\,\,C = 4F.$$
2
GATE ECE 2006
MCQ (Single Correct Answer)
+2
-0.6
Let $$g\left( t \right){\mkern 1mu} {\mkern 1mu} \,\,\,\,\,{\mkern 1mu} = {\mkern 1mu} {\mkern 1mu} p\left( t \right){}^ * p\left( t \right)$$ where $$ * $$ denotes convolution and $$p(t) = u(t) - u(t-1)$$ with $$u(t)$$ being the unit step function

The impulse response of filter matched to the signal $$s(t) = g(t)$$ $$ - \delta {\left( {t - 2} \right)^ * }\,\,g\left( t \right)$$ is given as:

A
$$s\left( {1 - t} \right)$$
B
$$ - s\left( {1 - t} \right)$$
C
$$ - s\left( t \right)$$
D
$$ s\left( t \right)$$
3
GATE ECE 2006
MCQ (Single Correct Answer)
+2
-0.6
A zero-mean white Gaussian noise is passed through an ideal low-pass filter of bandwidth 10 kHz. The output is then uniformly sampled with sampling period ts = 0.03 msec. The samples so obtained would be
A
correlated
B
statistically independent
C
uncorrelated
D
orthogonal
4
GATE ECE 2006
MCQ (Single Correct Answer)
+2
-0.6
A source generates three symbols with probabilities 0.25, 0.25, 0.50 at a rate of 3000 symbols per second. Assuming independent generation of symbols, the most efficient source encoder would have average bit rate as
A
6000 bits/sec
B
4500 bits/sec
C
3000 bits/sec
D
1500 bits/sec