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Recent questions and answers in Digital Signal Processing

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1 answer
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At a room temperature of $300K$, calculate the thermal noise generated by two resistors of $10K\Omega$ and $20K\Omega$ when the bandwidth is $10KHz$. $1.2868\times10^{-6}V, 1.819\times10^{-6}V$ $6.08\times10^{-6}V, 15.77\times10^{-6}V$ $16.66\times10^{-6}V, 2.356\times10^{-6}V$ $1.66\times10^{-6}V, 0.23\times10^{-6}V$
answered Oct 4, 2020 in Digital Signal Processing Madhav 194 views
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3 answers
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Twelve $1\;\Omega$ resistances are used as edges to from a cube. The resistance between two diagonally opposite corners of the cube is $\frac{5}{6}\;\Omega$ $\frac{1}{6}\;\Omega$ $\frac{6}{5}\;\Omega$ $\frac{3}{2}\;\Omega$
asked Aug 28, 2020 in Digital Signal Processing Lakshman Patel RJIT 84 views
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5
In MOSFET fabrication, the channel; length is defined during the process of Isolation oxide growth Channel stop implantation Poly-silicon gate patterning Lithography step leading to the contact pad
asked Aug 28, 2020 in Digital Signal Processing Lakshman Patel RJIT 54 views
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Twelve $1\;\Omega$ resistances are used as edges to from a cube. The resistance between two diagonally opposite corners of the cube is $\frac{5}{6}\;\Omega$ $\frac{1}{6}\;\Omega$ $\frac{6}{5}\;\Omega$ $\frac{3}{2}\;\Omega$
asked Aug 28, 2020 in Digital Signal Processing Lakshman Patel RJIT 66 views
0 votes
0 answers
7
The final value theorem is used to find the Steady state value of the system output Initial value of the system output Transient behavior of the system output None of these
asked Aug 28, 2020 in Digital Signal Processing Lakshman Patel RJIT 68 views
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If the number of bits per sample in a PCM system is increased from a $n$ to $n+1,$ the improvement in signal to quantization nose ratio will be $3\;dB$ $6\;dB$ $2n\;dB$ $n\;dB$
asked Aug 28, 2020 in Digital Signal Processing Lakshman Patel RJIT 59 views
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11
A carrier $Ac\cos(\omega c)t$ is frequency modulated by a signal $Em\cos(\omega m)t.$ The modulation index is $mf.$ The expression for the resulting FM signal is $Ac\cos [\omega ct + mf\sin(\omega m)t]$ $Ac\cos [\omega ct + mf\cos(\omega m)t]$ $Ac\cos [\omega ct + \pi mf\sin \omega m t]$ $Ac\cos [\omega ct + 2\pi mf Em \cos(\omega m)t/\omega m]$
asked Aug 28, 2020 in Digital Signal Processing Lakshman Patel RJIT 57 views
0 votes
0 answers
12
In MOSFET fabrication, the channel; length is defined during the process of Isolation oxide growth Channel stop implantation Poly-silicon gate patterning Lithography step leading to the contact pad
asked Aug 28, 2020 in Digital Signal Processing Lakshman Patel RJIT 54 views
0 votes
0 answers
13
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The sequence of operation in which PCM is done is Sampling, quantizing, encoding Quantizing, sampling, encoding Quantizing, encoding, sampling None of the above
answered Jun 10, 2020 in Digital Signal Processing Ollie 986 views
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1 answer
16
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In a microprocessor, WAIT states are used to make the processor wait during a DMA operation make the processor wait during a power interrupt processing make the processor wait during a power shutdown interface slow peripherals to the processor
answered May 19, 2020 in Digital Signal Processing Mohit Kumar 6 138 views
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1 answer
18
A low pass filter is Passes the frequencies lower than the specified cut off frequency Used to recover signal from sampled signal Rejects higher frequencies All of the above
answered Apr 25, 2020 in Digital Signal Processing Sabirazain 242 views
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A stable multivibrator are used as comparator circuit squaring circuit frequency to voltage converter voltage to frequency converter
asked Apr 2, 2020 in Digital Signal Processing Lakshman Patel RJIT 69 views
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23
The communication network comprises number of base stations. The scope of each base station covers the circular area. To avoid the overlapping and gaping of areas, the scope of each base station is accounted by Rectangle Pentagon Hexagon Octagon
asked Aug 4, 2019 in Digital Signal Processing gatecse 34 views
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24
In a communicative network, though the scope of base station is circular area, the network scope is represented by______ shape, as it is nearest to the circular area. triangular rectangular pentagonal hexagonal.
asked Aug 4, 2019 in Digital Signal Processing gatecse 23 views
2 votes
3 answers
25
Consider a discrete memoryless channel and assume that H(x) is the amount of information per symbol at the input of the channel; H(y) is the amount of information per symbol at the output of the channel. H(x $\mid$ y) is the amount of uncertainty remaining on x knowing y; and I(x;y)is the information transmission. ... -H(y $\mid$ x)]; p(x) max [H(x)-H(x $\mid$ y)]; p(x) max H(x $\mid$y); p(x)
answered May 3, 2019 in Digital Signal Processing Adnan Ashraf 967 views
2 votes
1 answer
26
A Butterworth lowpass filter of order $n$, with a cutoff frequency at distance $D_{0}$ from the origin, has the transfer function $H(u, v)$ given by $\frac{1}{1+\left[\frac{D(u, v)}{D_{0}}\right]^{2n}}$ $\frac{1}{1+\left[\frac{D(u, v)}{D_{0}}\right]^{n}}$ $\frac{1}{1+\left[\frac{D_{0}}{D(u, v)}\right]^{2n}}$ $\frac{1}{1+\left[\frac{D_{0}}{D(u, v)}\right]^{n}}$
answered Jan 5, 2017 in Digital Signal Processing Sanjay Sharma 661 views
3 votes
1 answer
27
Given two spatial masks $S_{1}= \begin{bmatrix} 0&1&0 \\ 1&-4&0 \\ 0&1&0 \end{bmatrix}$ $S_{2} = \begin{bmatrix} 1&1&1 \\ 1&-8&1 \\ 1&1&1 \end{bmatrix}$ The Laplacian of an image at all points $(x, y)$ can be implemented by convolving the image with spatial mask. Which of the following can be used as the spatial mask ? only $S_{1}$ only $S_{2}$ Both $S_{1}$ and $S_{2}$ None of these
answered Dec 23, 2016 in Digital Signal Processing Sanjay Sharma 1.3k views
–2 votes
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28
3sin(200rt) is amplitude modulated with 600s(6000rt) Find the spectral response and expression of the AM signal generated
asked Nov 28, 2016 in Digital Signal Processing rahuldb 176 views
1 vote
1 answer
29
Blind image disconvolution is Combination of blur identification and image restoration Combination of segmentation and classification Combination of blur and non-blur image None of the above
answered Aug 11, 2016 in Digital Signal Processing Sanjay Sharma 828 views
3 votes
1 answer
30
Page Shift Keying (PSK) Method is used to modulate digital signal at 9600 bps using 16 level. Find the line signals and speed (i.e., modulation rate) 2400 bauds 1200 bauds 4800 bauds 9600 bauds
answered Jul 5, 2016 in Digital Signal Processing Sanjay Sharma 2.3k views
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