1
GATE ECE 1995
MCQ (Single Correct Answer)
+1
-0.3
If the number of bits per sample in a PCM system is increased from n to n+1, the improvement in signal-to-quantization noise ratio will be
A
3 dB
B
6 dB
C
2n dB
D
n dB
2
GATE ECE 1995
MCQ (Single Correct Answer)
+1
-0.3
The signal to quantization noise ratio in an n-bit PCM system
A
depends upon the sampling frequency employed.
B
is independent of the value of 'n'.
C
increasing with increasing value of 'n'.
D
decreases with the increasing value of n'.
3
GATE ECE 1995
MCQ (Single Correct Answer)
+1
-0.3
For a narrow band noise with Gaussian quadrature and inphase components, the probability density function of its enveolope will be
A
uniform
B
Gaussian
C
exponential
D
Rayleigh
4
GATE ECE 1995
MCQ (Single Correct Answer)
+1
-0.3
If $$L\left(f\left(t\right)\right)=\frac{2\left(s+1\right)}{s^2+2s+5}$$ then f(0+) and f($$\infty$$) are given by [Note: 'L' stands for 'Laplace Transform of']
A
0,2 respectively
B
2,0 respectively
C
0,1 respectively
D
2/5,0 respectively
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