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364
GATE ECE 2005 | Question: 84b
Statement of Linked Answer Questions $84a$ and $84b$ Voltage standing wave pattern in a lossless transmission line with characteristic impedance $50 \mathrm{W}$ and a resistive load is shown in the figure. The reflection coefficient is given by $-0.6$ $-1$ $0.6$ $0$
Statement of Linked Answer Questions $84a$ and $84b$Voltage standing wave pattern in a lossless transmission line with characteristic impedance $50 \mathrm{W}$ and a resi...
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365
GATE ECE 2005 | Question: 85b
Statement of Linked Answer Questions $85 a$ and $85b$ A sequence $x(n)$ has non-zero values as shown in the figure The Fourier transform of $y(2 n)$ will be $e^{-j2w} [\cos 4 w+2 \cos 2 w+2]$ $[\cos 2 w+2 \cos w+2]$ $e^{-jw} [\cos 2 w+2 \cos w+2]$ $e^{-j2w} [\cos 2 w+2 \cos w+2]$
Statement of Linked Answer Questions $85 a$ and $85b$A sequence $x(n)$ has non-zero values as shown in the figureThe Fourier transform of $y(2 n)$ will be$e^{-j2w} [\cos ...
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366
GATE ECE 1997 | Question 1.1
The current $i_4$ in the circuit of the figure is equal to $12 \mathrm{~A}$ $-12 \mathrm{~A}$ $4 \mathrm{~A}$ None of these
The current $i_4$ in the circuit of the figure is equal to$12 \mathrm{~A}$$-12 \mathrm{~A}$$4 \mathrm{~A}$None of these
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367
GATE ECE 1997 | Question: 1.2
The voltage $\mathrm{V}$ in the figure is equal to $3 \mathrm{~V}$ $-3 \mathrm{~V}$ $5 \mathrm{~V}$ None of these
The voltage $\mathrm{V}$ in the figure is equal to$3 \mathrm{~V}$$-3 \mathrm{~V}$$5 \mathrm{~V}$None of these
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368
GATE ECE 1997 | Question 1.3
The voltage $\mathrm{V}$ in the figure is always equal to $9 \mathrm{~V}$ $5 \mathrm{~V}$ $1 \mathrm{~V}$ None of the above
The voltage $\mathrm{V}$ in the figure is always equal to$9 \mathrm{~V}$$5 \mathrm{~V}$$1 \mathrm{~V}$None of the above
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369
GATE ECE 1997 | Question 1.4
The function $f(t)$ has the Fourier Transform $g(\omega)$. The Fourier Transform $f f(t) g(t)\left(=\int_{-\infty}^{\infty} g(t) e^{-j \omega t} d t\right)$ is $\frac{1}{2 \pi} f(\omega)$ $\frac{1}{2 \pi} f(-\omega)$ $2 \pi f(-\omega)$ None of the above
The function $f(t)$ has the Fourier Transform $g(\omega)$. The Fourier Transform$f f(t) g(t)\left(=\int_{-\infty}^{\infty} g(t) e^{-j \omega t} d t\right)$ is$\frac{1}{2 ...
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370
GATE ECE 1997 | Question 1.5
The Laplace Transform of $e \alpha t \cos (\alpha \; t)$ is equal to $\frac{(s-\alpha)}{(s-\alpha)^2+\alpha^2}$ $\frac{(s+\alpha)}{(s-\alpha)^2+\alpha^2}$ $\frac{1}{(s-\alpha)^2}$ None of the above
The Laplace Transform of $e \alpha t \cos (\alpha \; t)$ is equal to$\frac{(s-\alpha)}{(s-\alpha)^2+\alpha^2}$$\frac{(s+\alpha)}{(s-\alpha)^2+\alpha^2}$$\frac{1}{(s-\alph...
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371
GATE ECE 1997 | Question 1.6
A transmission line of $50 \; \Omega$ characteristic impedance is terminated with a $100 \; \Omega$ resistance. The minimum impedance measured on the line is equal to $0 \; \Omega$ $25 \; \Omega$ $50 \; \Omega$ $100 \; \Omega$
A transmission line of $50 \; \Omega$ characteristic impedance is terminated with a $100 \; \Omega$ resistance. The minimum impedance measured on the line is equal to$0 ...
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372
GATE ECE 1997 | Question 1.7
A rectangular air-filled waveguide has cross section of $4 \mathrm{~cm} \times 10 \mathrm{~cm}$. The minimum frequency which can propagate in the waveguide is $1.5\; \mathrm{GHz}$ $2.0\; \mathrm{GHz}$ $2.5\; \mathrm{GHz}$ $3.0\; \mathrm{GHz}$
A rectangular air-filled waveguide has cross section of $4 \mathrm{~cm} \times 10 \mathrm{~cm}$. The minimum frequency which can propagate in the waveguide is$1.5\; \math...
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373
GATE ECE 1997 | Question 1.8
The line code that has zero $\text{dc}$ component for pulse transmission of random binary data is Non-return to zero $\text{(NRZ)}$ Retrun to zero $\text{(RZ)}$ Alternate Mark Inversion $\text{(AM)}$ None of the above
The line code that has zero $\text{dc}$ component for pulse transmission of random binary data isNon-return to zero $\text{(NRZ)}$Retrun to zero $\text{(RZ)}$Alternate Ma...
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374
GATE ECE 1997 | Question 1.9
A probability density fucntion is given by $p(x)=\mathrm{K} e^{-x^2 / 2}-\infty<x<\infty$. The value of $K$ should be $\frac{1}{\sqrt{2 \pi}}$ $\sqrt{\frac{2}{\pi}}$ $\frac{1}{2 \sqrt{\pi}}$ $\frac{1}{\pi \sqrt{2}}$
A probability density fucntion is given by $p(x)=\mathrm{K} e^{-x^2 / 2}-\infty<x<\infty$. The value of $K$ should be$\frac{1}{\sqrt{2 \pi}}$$\sqrt{\frac{2}{\pi}}$$\frac{...
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375
GATE ECE 1997 | Question 1.10
A deterministic signal has the power spectrum given in the figure is, The minimum sampling rate needed to completely represent this signal is $1 \; \mathrm{kHz}$ $2 \; \mathrm{kHz}$ $3 \; \mathrm{kHz}$ None of the above
A deterministic signal has the power spectrum given in the figure is, The minimum sampling rate needed to completely represent this signal is$1 \; \mathrm{kHz}$$2 \; \mat...
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376
GATE ECE 1997 | Question 1.11
The voltage $V$ in the figure is $10 \mathrm{~V}$ $15 \mathrm{~V}$ $5 \mathrm{~V}$ None of the above
The voltage $V$ in the figure is$10 \mathrm{~V}$$15 \mathrm{~V}$$5 \mathrm{~V}$None of the above
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378
GATE ECE 1997 | Question 2.2
A cascade amplifier stage is equivalent to a common emitter stage followed by a common base stage a common base stage followed by an emitter follower an emitter follower stage followed by a common base stage a common base stage followed by a common emitter stage
A cascade amplifier stage is equivalent toa common emitter stage followed by a common base stagea common base stage followed by an emitter followeran emitter follower sta...
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379
GATE ECE 1997 | Question 2.3
For a $\text{MOS}$ capacitor fabricated on a $p$-type semiconductor, strong inversion occurs when surface potential is equal to Fermi potential surface potential is zero surface potential is negative and equal to Fermi potential in magnitude surface potential is positive and equal to twice the Fermi potential
For a $\text{MOS}$ capacitor fabricated on a $p$-type semiconductor, strong inversion occurs whensurface potential is equal to Fermi potentialsurface potential is zerosur...
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381
GATE ECE 1997 | Question 2.5
Each cell of a Static Random Access Memory contains $6 \; \text{MOS}$ transistors $4 \; \mathrm{MOS}$ transistors and $2$ capacitors $2 \; \text{MOS}$ transistors and $4$ capacitors $1 \; \text{MOS}$ transistor and $1$ capacitor
Each cell of a Static Random Access Memory contains$6 \; \text{MOS}$ transistors$4 \; \mathrm{MOS}$ transistors and $2$ capacitors$2 \; \text{MOS}$ transistors and $4$ ca...
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382
GATE ECE 1997 | Question 2.6
A $2$ bit binary multiplier can be implemented using $2$ inputs $\text{ANDs}$ only $2$ input $\text{XOR s}$ and $4$ input $\text{AND}$ gates only Two $2$ inputs $\text{NORs}$ and one $\text{XNOR}$ gate $\text{XOR}$ gates and shift registers
A $2$ bit binary multiplier can be implemented using$2$ inputs $\text{ANDs}$ only$2$ input $\text{XOR s}$ and $4$ input $\text{AND}$ gates onlyTwo $2$ inputs $\text{NORs}...
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383
GATE ECE 1997 | Question 2.7
In standard $\text{TTL}$, the 'totem pole' stage refers to the multi-emitter input stage the phase splitter the output buffer open collector output stage
In standard $\text{TTL}$, the 'totem pole' stage refers tothe multi-emitter input stagethe phase splitterthe output bufferopen collector output stage
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385
GATE ECE 1997 | Question 2.9
The output of the logic gate in the figure is $0$ $1$ $\text{A}$ $\mathrm{F}$
The output of the logic gate in the figure is$0$$1$$\text{A}$$\mathrm{F}$
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386
GATE ECE 1997 | Question 2.10
In an $8085 \; \mu \; \mathrm{P}$ system, the $\text{RST}$ instruction will cause an interrupt only if an interrupt service routine is not being executed only if a bit in the interrupt mask is made $0$ only if interrupts have been enabled by an $\text{El}$ instruction None of the above
In an $8085 \; \mu \; \mathrm{P}$ system, the $\text{RST}$ instruction will cause an interruptonly if an interrupt service routine is not being executedonly if a bit in t...
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387
GATE ECE 1997 | Question 3.1
In the circuit of the figure is the energy absorbed by the $4 \; \Omega$ resistor in the time interval $(0, \infty)$ is $36$ Joules $16$ Joules $256$ Joules None of the above
In the circuit of the figure is the energy absorbed by the $4 \; \Omega$ resistor in the time interval $(0, \infty)$ is$36$ Joules$16$ Joules$256$ JoulesNone of the above...
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388
GATE ECE 1997 | Question 3.2
In the circuit of the figure is the equivalent impedance seen across terminals $\text{a, b}$ is $\left(\frac{16}{3}\right) \Omega$ $\left(\frac{8}{3}\right) \Omega$ $\left(\frac{8}{3}+12 j\right) \Omega$ None of the above
In the circuit of the figure is the equivalent impedance seen across terminals $\text{a, b}$ is$\left(\frac{16}{3}\right) \Omega$$\left(\frac{8}{3}\right) \Omega$$\left(\...
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389
GATE ECE 1997 | Question 3.3
In the circuit of in the figure is the current $i_{D}$ through the ideal diode (zero cut in voltage and forward resistance) equals $0 \mathrm{~A}$ $4 \mathrm{~A}$ $1 \mathrm{~A}$ None of the above
In the circuit of in the figure is the current $i_{D}$ through the ideal diode (zero cut in voltage and forward resistance) equals$0 \mathrm{~A}$$4 \mathrm{~A}$$1 \mathrm...
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390
GATE ECE 1997 | Question 3.4
In the signal flow graph of the figure is $\text{y/ x}$ equals $3$ $\frac{5}{2}$ $2$ None of the above
In the signal flow graph of the figure is $\text{y/ x}$ equals$3$$\frac{5}{2}$$2$None of the above
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392
GATE ECE 1997 | Question 3.6
A communication channel has first-order low pass transfer function. The channel is used to transmit pulses at a symbol rate greater than the half-power frequency of the low pass function. Which of the network shown in the figure is can be used to equalise the received pulses?
A communication channel has first-order low pass transfer function. The channel is used to transmit pulses at a symbol rate greater than the half-power frequency of the l...
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393
GATE ECE 1997 | Question 3.7
The power spectral density of a deterministic signal is given by $\left[\sin (f) / f^{2}\right]$ where $f$ is frequency. The autocorrelation function of this signal in the time domain is a rectangular pulse a delta function a sine pulse a triangular pulse
The power spectral density of a deterministic signal is given by $\left[\sin (f) / f^{2}\right]$ where $f$ is frequency. The autocorrelation function of this signal in th...
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395
GATE ECE 1997 | Question 3.9
A parabolic dish antenna has a conical beam $2^{\circ}$ wide, the directivity of the antenna is approximately $20 \; d \mathrm{B}$ $30 \; d \mathrm{B}$ $40 \; d \mathrm{B}$ $50 \; d \mathrm{B}$
A parabolic dish antenna has a conical beam $2^{\circ}$ wide, the directivity of the antenna is approximately$20 \; d \mathrm{B}$$30 \; d \mathrm{B}$$40 \; d \mathrm{B}$$...
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396
GATE ECE 1997 | Question 3.10
A very lossy, $\lambda / 4$ long, $50 \; \Omega$ transmission line is open circuited at the load end. The input impedance measured at the other end of the line is approximately $0$ $50 \; \Omega$ $\infty$ None of the above
A very lossy, $\lambda / 4$ long, $50 \; \Omega$ transmission line is open circuited at the load end. The input impedance measured at the other end of the line is approxi...
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398
GATE ECE 1997 | Question 4.1
The output voltage $V_{0}$ of the circuit shown in the figure is $-4 \mathrm{~V}$ $6 \mathrm{~V}$ $5 \mathrm{~V}$ $-5.5 \mathrm{~V}$
The output voltage $V_{0}$ of the circuit shown in the figure is$-4 \mathrm{~V}$$6 \mathrm{~V}$$5 \mathrm{~V}$$-5.5 \mathrm{~V}$
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400
GATE ECE 1997 | Question 4.3
The following insturctions have been executed by an $8085 \; \mu \mathrm{P}$ ... $6019$ $6379$ $6979$ None of the above
The following insturctions have been executed by an $8085 \; \mu \mathrm{P}$$\begin{array}{cl}\text { ADDRESS (HEX) } & \text { INSTRUCTION } \\ 6010 & \text { LXI H, 8A ...
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