Register
Filter

Recent questions in Digital Signal Processing

282
views
0 answers
0 votes
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[...
User Avatar
1.2k
views
1 answers
1 votes
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 ...
User Avatar
396
views
1 answers
1 votes
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
User Avatar
465
views
0 answers
0 votes
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...
User Avatar
550
views
1 answers
0 votes
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
User Avatar
374
views
0 answers
0 votes
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
User Avatar
350
views
0 answers
0 votes
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)}$$\frac{z}{(z+a)}$
User Avatar
501
views
0 answers
0 votes
NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 5
For a periodic signal $v(t) = 30\sin 100t + 10\cos 300t + 6\sin(500t + \frac{\pi}{4}),$ the fundamental frequency in rad/s $100$ $300$ $500$ None of these
For a periodic signal $v(t) = 30\sin 100t + 10\cos 300t + 6\sin(500t + \frac{\pi}{4}),$ the fundamental frequency in rad/s$100$$300$$500$None of these
User Avatar
365
views
0 answers
0 votes
NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 7
If the number of bits per sample in a PCM system is increased from a $n$ to $n+1,$ the improvement in signal to quantization nose ratio will be $3\;dB$ $6\;dB$ $2n\;dB$ $n\;dB$
If the number of bits per sample in a PCM system is increased from a $n$ to $n+1,$ the improvement in signal to quantization nose ratio will be$3\;dB$$6\;dB$$2n\;dB$$n\;d...
User Avatar
417
views
1 answers
0 votes
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 ...
User Avatar
322
views
0 answers
0 votes
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...
User Avatar
368
views
0 answers
0 votes
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$$16$
User Avatar
358
views
0 answers
0 votes
NIELIT 2016 MAR Scientist C - Section C: 42
A stable multivibrator are used as comparator circuit squaring circuit frequency to voltage converter voltage to frequency converter
A stable multivibrator are used as comparator circuitsquaring circuitfrequency to voltage convertervoltage to frequency converter
User Avatar
248
views
0 answers
0 votes
NIELIT 2016 MAR Scientist C - Section C: 43
The astable multivibrator has two quasi stable states two stable states one stable and one quasi-stable state none of these
The astable multivibrator hastwo quasi stable statestwo stable statesone stable and one quasi-stable statenone of these
User Avatar
618
views
1 answers
0 votes
NIELIT 2016 MAR Scientist C - Section C: 48
In a microprocessor, WAIT states are used to make the processor wait during a DMA operation make the processor wait during a power interrupt processing make the processor wait during a power shutdown interface slow peripherals to the processor
In a microprocessor, WAIT states are used to make the processor wait during a DMA operation make the processor wait during a power interrupt processingmake the processor ...
User Avatar
1.1k
views
2 answers
0 votes
NIELIT 2016 MAR Scientist C - Section C: 61
Microprogramming is a technique for writing small programs effectively programming output/input routines programming the microprocessors programming the control steps of a computer
Microprogramming is a technique for writing small programs effectivelyprogramming output/input routinesprogramming the microprocessorsprogramming the control steps of a c...
User Avatar
369
views
0 answers
0 votes
NIELIT 2017 OCT Scientific Assistant A (CS) - Section B: 27
At $100\%$ modulation, the power in each sideband is _______ of that of carrier. $50\%$ $40\%$ $60\%$ $25\%$
At $100\%$ modulation, the power in each sideband is _______ of that of carrier.$50\%$$40\%$$60\%$$25\%$
User Avatar
904
views
3 answers
0 votes
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
User Avatar
Page: