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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[...
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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$$\frac{1}{6}\;\...
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NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 3
The final value theorem is used to find the Steady state value of the system output Initial value of the system output Transient behavior of the system output None of these
The final value theorem is used to find theSteady state value of the system outputInitial value of the system outputTransient behavior of the system outputNone of these
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NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 4
For the discrete signal $x[n] = a^{n}u[n],a>0$ the $z$-transform is $\frac{(z+a)}{z}$ $\frac{(z-a)}{z}$ $\frac{z}{(z-a)}$ $\frac{z}{(z+a)}$
For the discrete signal $x[n] = a^{n}u[n],a>0$ the $z$-transform is$\frac{(z+a)}{z}$$\frac{(z-a)}{z}$$\frac{z}{(z-a)}$$\frac{z}{(z+a)}$
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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
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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$$n\;d...
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NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 11
In MOSFET fabrication, the channel; length is defined during the process of Isolation oxide growth Channel stop implantation Poly-silicon gate patterning Lithography step leading to the contact pad
In MOSFET fabrication, the channel; length is defined during the process ofIsolation oxide growthChannel stop implantationPoly-silicon gate patterningLithography step lea...
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NIELIT 2017 OCT Scientific Assistant A (CS) - Section D: 12
The open-loop transfer function of a feedback control system is $G(s)\cdot H(s) = 1/(s+1)^{3}.$ The gain margin of the system is $2$ $4$ $8$ $16$
The open-loop transfer function of a feedback control system is $G(s)\cdot H(s) = 1/(s+1)^{3}.$ The gain margin of the system is $2$$4$$8$$16$
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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
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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
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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\%$
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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
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 sc...
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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.
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. tri...
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14
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
3sin(200rt) is amplitude modulated with 600s(6000rt)Find the spectral response and expression of the AM signal generated
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