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Questions without a selected answer in Digital Signal Processing
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TIFR System Science 2018 Question 1
Consider a discrete-time system which in response to input sequence x[n] (n integer) outputs the sequence y[n] such that $y[n] = 0, n = −1, −2, −3,...$ and $y[n]=2 (y[n − 1] + nx[n]), n = 0, 1, 2,...$. Find out if the system is linear and time-invariant.
analyse
asked
in
Digital Signal Processing
Nov 22, 2022
by
analyse
254
views
discrete
1
vote
1
answer
2
NIELIT 2022 April Scientist B | Section B | Question: 47
In a baseband communication link, frequencies upto $3500 \; \text{Hz}$ are used for signaling. Using a raised cosine pulse with $75 \%$ excess bandwidth and for no inter symbol interference, the maximum possible signaling rate is symbols $\text{per sec}$ is: $1750$ $2625$ $4000$ $5250$
soujanyareddy13
asked
in
Digital Signal Processing
Apr 12, 2022
by
soujanyareddy13
1.2k
views
nielit2022apr-scientistb
non-gate
1
vote
1
answer
3
NIELIT Scientific Assistant A 2020 November: 60
Term in the $\text{MVC}$ architecture that receives events is called _________. Receiver Controller Transmitter Modulator
gatecse
asked
in
Digital Signal Processing
Dec 9, 2020
by
gatecse
370
views
nielit-sta-2020
digital-signal-processing
0
votes
0
answers
4
NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 1
Twelve $1\;\Omega$ resistances are used as edges to from a cube. The resistance between two diagonally opposite corners of the cube is $\frac{5}{6}\;\Omega$ $\frac{1}{6}\;\Omega$ $\frac{6}{5}\;\Omega$ $\frac{3}{2}\;\Omega$
admin
asked
in
Digital Signal Processing
Aug 28, 2020
by
admin
382
views
nielit2017oct-assistanta-cs
non-gate
0
votes
1
answer
5
NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 2
An ideal op-amp is an ideal voltage controlled current source voltage controlled voltage source current controlled current source current controlled voltage source
admin
asked
in
Digital Signal Processing
Aug 28, 2020
by
admin
502
views
nielit2017oct-assistanta-cs
non-gate
0
votes
0
answers
6
NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 3
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
admin
asked
in
Digital Signal Processing
Aug 28, 2020
by
admin
360
views
nielit2017oct-assistanta-cs
non-gate
0
votes
0
answers
7
NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 4
For the discrete signal $x[n] = a^{n}u[n],a>0$ the $z$-transform is $\frac{(z+a)}{z}$ $\frac{(z-a)}{z}$ $\frac{z}{(z-a)}$ $\frac{z}{(z+a)}$
admin
asked
in
Digital Signal Processing
Aug 28, 2020
by
admin
331
views
nielit2017oct-assistanta-cs
non-gate
0
votes
0
answers
8
NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 5
For a periodic signal $v(t) = 30\sin 100t + 10\cos 300t + 6\sin(500t + \frac{\pi}{4}),$ the fundamental frequency in rad/s $100$ $300$ $500$ None of these
admin
asked
in
Digital Signal Processing
Aug 28, 2020
by
admin
468
views
nielit2017oct-assistanta-cs
non-gate
0
votes
0
answers
9
NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 7
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 $3\;dB$ $6\;dB$ $2n\;dB$ $n\;dB$
admin
asked
in
Digital Signal Processing
Aug 28, 2020
by
admin
340
views
nielit2017oct-assistanta-cs
non-gate
0
votes
1
answer
10
NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 8
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 $Ac\cos [\omega ct + mf\sin(\omega m)t]$ ... $Ac\cos [\omega ct + 2\pi mf Em \cos(\omega m)t/\omega m]$
admin
asked
in
Digital Signal Processing
Aug 28, 2020
by
admin
390
views
nielit2017oct-assistanta-cs
non-gate
0
votes
0
answers
11
NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 11
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
admin
asked
in
Digital Signal Processing
Aug 28, 2020
by
admin
299
views
nielit2017oct-assistanta-cs
non-gate
0
votes
0
answers
12
NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 12
The open-loop transfer function of a feedback control system is $G(s)\cdot H(s) = 1/(s+1)^{3}.$ The gain margin of the system is $2$ $4$ $8$ $16$
admin
asked
in
Digital Signal Processing
Aug 28, 2020
by
admin
345
views
nielit2017oct-assistanta-cs
non-gate
0
votes
0
answers
13
NIELIT 2016 MAR Scientist C - Section C: 42
A stable multivibrator are used as comparator circuit squaring circuit frequency to voltage converter voltage to frequency converter
admin
asked
in
Digital Signal Processing
Apr 2, 2020
by
admin
337
views
nielit2016mar-scientistc
non-gate
0
votes
0
answers
14
NIELIT 2016 MAR Scientist C - Section C: 43
The astable multivibrator has two quasi stable states two stable states one stable and one quasi-stable state none of these
admin
asked
in
Digital Signal Processing
Apr 2, 2020
by
admin
234
views
nielit2016mar-scientistc
non-gate
0
votes
1
answer
15
NIELIT 2016 MAR Scientist C - Section C: 48
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
admin
asked
in
Digital Signal Processing
Apr 2, 2020
by
admin
607
views
nielit2016mar-scientistc
non-gate
microprocessors
0
votes
2
answers
16
NIELIT 2016 MAR Scientist C - Section C: 61
Microprogramming is a technique for writing small programs effectively programming output/input routines programming the microprocessors programming the control steps of a computer
admin
asked
in
Digital Signal Processing
Apr 2, 2020
by
admin
943
views
nielit2016mar-scientistc
co-and-architecture
microprogramming
0
votes
0
answers
17
NIELIT 2017 OCT Scientific Assistant A (CS) - Section B: 27
At $100\%$ modulation, the power in each sideband is _______ of that of carrier. $50\%$ $40\%$ $60\%$ $25\%$
admin
asked
in
Digital Signal Processing
Apr 1, 2020
by
admin
349
views
nielit2017oct-assistanta-cs
non-gate
0
votes
3
answers
18
NIELIT 2017 DEC Scientific Assistant A - Section B: 8
Microprocessors are used in which generation of computers? I – st Generation II – nd Generation III – rd Generation IV – th Generation
admin
asked
in
Digital Signal Processing
Mar 31, 2020
by
admin
864
views
nielit2017dec-assistanta
non-gate
microprocessors
0
votes
1
answer
19
NIELIT 2016 DEC Scientist B (CS) - Section B: 17
$T1$ carrier system is used: For delta modulation Industrial noise For frequency modulated signals None of the above
admin
asked
in
Digital Signal Processing
Mar 31, 2020
by
admin
900
views
nielit2016dec-scientistb-cs
non-gate
0
votes
1
answer
20
NIELIT 2016 DEC Scientist B (CS) - Section B: 25
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
admin
asked
in
Digital Signal Processing
Mar 31, 2020
by
admin
1.6k
views
nielit2016dec-scientistb-cs
non-gate
0
votes
1
answer
21
NIELIT 2016 DEC Scientist B (CS) - Section B: 41
The IETF standard documents are called: RFC RCF ID none of the above
admin
asked
in
Digital Signal Processing
Mar 31, 2020
by
admin
440
views
nielit2016dec-scientistb-cs
non-gate
0
votes
1
answer
22
NIELIT 2016 DEC Scientist B (CS) - Section B: 60
The sequence of operation in which PCM is done is Sampling, quantizing, encoding Quantizing, sampling, encoding Quantizing, encoding, sampling None of the above
admin
asked
in
Digital Signal Processing
Mar 31, 2020
by
admin
5.2k
views
nielit2016dec-scientistb-cs
non-gate
0
votes
1
answer
23
NIELIT 2017 July Scientist B (CS) - Section B: 31
At a room temperature of $300K$, calculate the thermal noise generated by two resistors of $10K\Omega$ and $20K\Omega$ when the bandwidth is $10KHz$. $1.2868\times10^{-6}V, 1.819\times10^{-6}V$ $6.08\times10^{-6}V, 15.77\times10^{-6}V$ $16.66\times10^{-6}V, 2.356\times10^{-6}V$ $1.66\times10^{-6}V, 0.23\times10^{-6}V$
admin
asked
in
Digital Signal Processing
Mar 30, 2020
by
admin
1.4k
views
nielit2017july-scientistb-cs
non-gate
0
votes
0
answers
24
KPGCET-CSE-2019-49
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
gatecse
asked
in
Digital Signal Processing
Aug 4, 2019
by
gatecse
177
views
kpgcet-cse-2019
non-gate
data-communication
0
votes
0
answers
25
KPGCET-CSE-2019-51
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.
gatecse
asked
in
Digital Signal Processing
Aug 4, 2019
by
gatecse
138
views
kpgcet-cse-2019
non-gate
data-communication
–2
votes
0
answers
26
3sin(200rt) is amplitude modulated with 600
3sin(200rt) is amplitude modulated with 600s(6000rt) Find the spectral response and expression of the AM signal generated
rahuldb
asked
in
Digital Signal Processing
Nov 28, 2016
by
rahuldb
321
views
non-gate
2
votes
3
answers
27
UGC NET CSE | June 2016 | Part 3 | Question: 58
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( ... $\mid$ y)]; p(x) max H(x $\mid$y); p(x)
go_editor
asked
in
Digital Signal Processing
Aug 21, 2016
by
go_editor
1.6k
views
ugcnetcse-june2016-paper3
digital-image-processing
discrete-memoryless-channel
2
votes
1
answer
28
UGC NET CSE | December 2014 | Part 3 | Question: 66
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 $\frac{1}{1+\left[\frac{D(u, v)}{D_{0}}\right]^{2n}}$ ... $\frac{1}{1+\left[\frac{D_{0}}{D(u, v)}\right]^{n}}$
makhdoom ghaya
asked
in
Digital Signal Processing
Aug 2, 2016
by
makhdoom ghaya
1.3k
views
ugcnetcse-dec2014-paper3
digital-image-processing
butterworth-lowpass-filter
3
votes
1
answer
29
UGC NET CSE | December 2014 | Part 3 | Question: 64
Given two spatial masks $S_{1}= \begin{bmatrix} 0&1&0 \\ 1&-4&0 \\ 0&1&0 \end{bmatrix}$ $S_{2} = \begin{bmatrix} 1&1&1 \\ 1&-8&1 \\ 1&1&1 \end{bmatrix}$ ... can be used as the spatial mask ? only $S_{1}$ only $S_{2}$ Both $S_{1}$ and $S_{2}$ None of these
makhdoom ghaya
asked
in
Digital Signal Processing
Aug 2, 2016
by
makhdoom ghaya
1.8k
views
ugcnetcse-dec2014-paper3
digital-image-processing
spatial-mask
1
vote
1
answer
30
UGC NET CSE | December 2012 | Part 3 | Question: 60
The transform which posses ‘multi-resolution’ property is Fourier transform Short-time Fourier transform Wavelet transform Karhunen-Loere transform
go_editor
asked
in
Digital Signal Processing
Jul 13, 2016
by
go_editor
1.5k
views
ugcnetcse-dec2012-paper3
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