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Hot questions 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.
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[...
analyse
251
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analyse
asked
Nov 22, 2022
Digital Signal Processing
discrete
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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: $1750$ $2625$ $4000$ $5250$
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 ...
soujanyareddy13
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soujanyareddy13
asked
Apr 12, 2022
Digital Signal Processing
nielit2022apr-scientistb
non-gate
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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 $Ac\cos [\omega ct + mf\sin(\omega m)t]$ ... $Ac\cos [\omega ct + 2\pi mf Em \cos(\omega m)t/\omega m]$
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 ...
admin
383
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admin
asked
Aug 28, 2020
Digital Signal Processing
nielit2017oct-assistanta-cs
non-gate
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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
The sequence of operation in which PCM is done is Sampling, quantizing, encodingQuantizing, sampling, encodingQuantizing, encoding, samplingNone of the above
admin
5.2k
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admin
asked
Mar 31, 2020
Digital Signal Processing
nielit2016dec-scientistb-cs
non-gate
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NIELIT Scientific Assistant A 2020 November: 60
Term in the $\text{MVC}$ architecture that receives events is called _________. Receiver Controller Transmitter Modulator
Term in the $\text{MVC}$ architecture that receives events is called _________.ReceiverControllerTransmitterModulator
gatecse
365
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gatecse
asked
Dec 9, 2020
Digital Signal Processing
nielit-sta-2020
digital-signal-processing
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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
Microprogramming is a technique for writing small programs effectivelyprogramming output/input routinesprogramming the microprocessorsprogramming the control steps of a c...
admin
927
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admin
asked
Apr 2, 2020
Digital Signal Processing
nielit2016mar-scientistc
co-and-architecture
microprogramming
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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 $10KHz$. $1.2868\times10^{-6}V, 1.819\times10^{-6}V$ $6.08\times10^{-6}V, 15.77\times10^{-6}V$ $16.66\times10^{-6}V, 2.356\times10^{-6}V$ $1.66\times10^{-6}V, 0.23\times10^{-6}V$
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...
admin
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admin
asked
Mar 30, 2020
Digital Signal Processing
nielit2017july-scientistb-cs
non-gate
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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
An ideal op-amp is an idealvoltage controlled current sourcevoltage controlled voltage sourcecurrent controlled current sourcecurrent controlled voltage source
admin
491
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admin
asked
Aug 28, 2020
Digital Signal Processing
nielit2017oct-assistanta-cs
non-gate
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3
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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
Microprocessors are used in which generation of computers?I – st GenerationII – nd GenerationIII – rd GenerationIV – th Generation
admin
849
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admin
asked
Mar 31, 2020
Digital Signal Processing
nielit2017dec-assistanta
non-gate
microprocessors
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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
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
461
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admin
asked
Aug 28, 2020
Digital Signal Processing
nielit2017oct-assistanta-cs
non-gate
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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 $\frac{(z+a)}{z}$ $\frac{(z-a)}{z}$ $\frac{z}{(z-a)}$ $\frac{z}{(z+a)}$
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)}$$\frac{z}{(z+a)}$
admin
324
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admin
asked
Aug 28, 2020
Digital Signal Processing
nielit2017oct-assistanta-cs
non-gate
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NIELIT 2017 OCT Scientific Assistant A (IT) - Section D: 1
Twelve $1\;\Omega$ resistances are used as edges to from a cube. The resistance between two diagonally opposite corners of the cube is $\frac{5}{6}\;\Omega$ $\frac{1}{6}\;\Omega$ $\frac{6}{5}\;\Omega$ $\frac{3}{2}\;\Omega$
Twelve $1\;\Omega$ resistances are used as edges to from a cube. The resistance between two diagonally opposite corners of the cube is$\frac{5}{6}\;\Omega$$\frac{1}{6}\;\...
admin
385
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admin
asked
Aug 28, 2020
Digital Signal Processing
nielit2017oct-assistanta-it
non-gate
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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 $2$ $4$ $8$ $16$
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$$16$
admin
334
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admin
asked
Aug 28, 2020
Digital Signal Processing
nielit2017oct-assistanta-cs
non-gate
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NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 7
If the number of bits per sample in a PCM system is increased from a $n$ to $n+1,$ the improvement in signal to quantization nose ratio will be $3\;dB$ $6\;dB$ $2n\;dB$ $n\;dB$
If the number of bits per sample in a PCM system is increased from a $n$ to $n+1,$ the improvement in signal to quantization nose ratio will be$3\;dB$$6\;dB$$2n\;dB$$n\;d...
admin
336
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admin
asked
Aug 28, 2020
Digital Signal Processing
nielit2017oct-assistanta-cs
non-gate
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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 $\frac{5}{6}\;\Omega$ $\frac{1}{6}\;\Omega$ $\frac{6}{5}\;\Omega$ $\frac{3}{2}\;\Omega$
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}\;\...
admin
375
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admin
asked
Aug 28, 2020
Digital Signal Processing
nielit2017oct-assistanta-cs
non-gate
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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
The final value theorem is used to find theSteady state value of the system outputInitial value of the system outputTransient behavior of the system outputNone of these
admin
350
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admin
asked
Aug 28, 2020
Digital Signal Processing
nielit2017oct-assistanta-cs
non-gate
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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
In MOSFET fabrication, the channel; length is defined during the process ofIsolation oxide growthChannel stop implantationPoly-silicon gate patterningLithography step lea...
admin
291
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admin
asked
Aug 28, 2020
Digital Signal Processing
nielit2017oct-assistanta-cs
non-gate
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NIELIT 2017 OCT Scientific Assistant A (IT) - 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
In MOSFET fabrication, the channel; length is defined during the process ofIsolation oxide growthChannel stop implantationPoly-silicon gate patterningLithography step lea...
admin
381
views
admin
asked
Aug 28, 2020
Digital Signal Processing
nielit2017oct-assistanta-it
non-gate
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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
A low pass filter isPasses the frequencies lower than the specified cut off frequencyUsed to recover signal from sampled signalRejects higher frequenciesAll of the above
admin
1.6k
views
admin
asked
Mar 31, 2020
Digital Signal Processing
nielit2016dec-scientistb-cs
non-gate
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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
$T1$ carrier system is used:For delta modulationIndustrial noiseFor frequency modulated signalsNone of the above
admin
894
views
admin
asked
Mar 31, 2020
Digital Signal Processing
nielit2016dec-scientistb-cs
non-gate
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