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GATE ECE 1998

Exam Held on Thu Jan 01 1970 00:00:00 GMT+0000 (Coordinated Universal Time)
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GATE ECE

For full wave rectification, a four diode bridge rectifier is claimed to have th...
The emitter coupled pair of BJT’s gives a linear transfer relation between the d...
From a measurement of the rise time of the output pulse of an amplifier whose in...
The circuit of Fig. is an example of feedback of the following type <img alt="ga...
In a series regulated power supply circuit, the voltage gain A<sub>v</sub> of th...
In the circuit of fig. Determine the resistance R<sub>o</sub> seen by the output...
The $${f_T}$$ of a BJT is related to its $${g_{m,}}\,\,{C_\pi }$$ and $${C_\mu }...
In the MOSFET amplifier of the figure the signal output V<sub>1</sub> and V<sub>...
One input terminal of high gain comparator circuit is connected to ground and a ...
Find the value of $${R^1}$$ in the circuit of fig. For generating sinusoidal Osc...
In a differential Amplifier, CMRR can be improved by using an increased
In a shunt-shunt negative feedback Amplifier, as compared to the basic Amplifier...
Implement a monostable multivibrator using the timer circuit shown, in Fig. Also...
The image channel selectivity of super heterodyne receiver depends upon
A DSB-SC signal is generated using the carrier $$\cos\left(\omega_ct\;+\;\theta\...
Compression in PCM refers to relative compression of
Quadrature multiplexing is
In a PCM system with uniform quantization, increasing the number of bits from 8 ...
For a given data rate, the bandwidth B<sub>p</sub> of a BPSK signal and the band...
The amplitude spectrum of a Gaussian pulse is
The probability density function of the envelope of narrow band Gaussian noise ...
The ACF of a rectangular pulse of duration T is
If $$F\left(s\right)\;=\;\frac\omega{s^2\;+\;\omega^2}$$, then the value of $$\u...
Consider a unity feedback control system with open-loop transfer function $$G\le...
The unit impulse response of a linear time invariant system is the unit step fun...
The number of roots of $$s^3\;+\;5s^2\;+\;7s\;+\;3\;=\;0$$ in the left half of t...
The transfer function of a tachometer is of the form
Draw a signal flow graph for the following set of algebraic equations: $$$\begin...
Consider a feedback control system with loop transfer function $$$G\left(s\right...
The open loop transfer function of a unity feedback open-loop system is $$\frac{...
Consider the system shown in Fig. Determine the value of 'a' such that the dam...
The characteristic equation of a feedback control system is $$$s^4+20s^3+15s^2+2...
In the Bode-plot of a unity feedback control system, the value of phase of G($$j...
The Nyquist plot of a loop transfer function G$$(j\omega )$$ H$$(j\omega )$$, of...
The loop transfer function of a single loop control system is given by $$G(s)H(s...
The transfer function of a phase lead controller is $${\textstyle{{1 + 3Ts} \ove...
An equivalent 2’s complement representation of the 2’s complement number 1101 is...
Two 2' s complement numbers having sign bits x and y added and the sign bit of ...
The K-map for a Boolean function is shown in figure. The number of essential pri...
Figure shows a mod-K counter, Here K is equal to <img class="question-image" sr...
The noise margin of a TTL gate is about
The threshold voltage for each transistor in Fig.2.5, is 2V. For this circuit to...
In figure, A = 1 and B = 1. The input B is now replaced by a sequence 101010 ___...
The advantage of using a dual slope ADC in a digital voltmeter is that
For an ADC, match the following : if <br><b>List 1</b> <br> A. Flash converter <...
The mod-5 counter shown in figure counts through states Q<sub>2</sub> Q<sub>1</...
The Maxwell's equation $$\nabla\times\overrightarrow H\;=\;\overrightarrow J\;+\...
A loop is rotating about the y-axis in a magnetic field $$$\overrightarrow B\;=\...
The intrinsic impedance of copper at high frequencies is
The depth of penetration of a wave in a lossy dielectric increases with increasi...
The wavelength of a wave with propagation constant $$\left( {0.1\,\pi + j\,0.2\...
All transmission line sections shown in Fig. have characteristic impedance $${R_...
The polarization of a wave with electric field vector $$\overrightarrow E = {E_...
The time averaged Poynting vector, in W/m<sup>2</sup>, for a wave with $$\vec E ...
A plane wave with $$\overrightarrow E = 10\,{e^{j\left( {\omega t - \beta z} \r...
The electric field vector of a wave is given as $$$\vec E = {E_0}{\mkern 1mu} {...
An antenna in free space receives 2$$\mu $$ W of power when the incident electri...
The radiation resistance of a circular loop of one turn is 0.01 $$\Omega $$. The...
The far field of an antenna varies with distance r as
The vector $$\mathop H\limits^ \to $$ in the far field of an antenna satisfiels...
A rectangular waveguide with inner dimensions 6 cm $$ \times $$ 3 cm has been de...
The region between a pair of parallel perfectly conducting planes of infinite ex...
The static characteristic of an adequately forward biased p-n junction is a stra...
For small signal a.c. operation, a practical forward biased diode can be modeled...
The eigen values of the matrix $$A = \left[ {\matrix{ 0 &amp; 1 \cr 1 &a...
If $$\,\,\,L\,\,\left\{ {f\left( t \right)} \right\} = {w \over {{s^2} + {w^2}}}...
An I/O processor control the flow of information between
An instruction used to set the carry flag in a computer can be classified as
<p>The Nodal method of circuit analysis is based on</p>
<p>The voltage across the terminals a and b in Fig. is</p> <img alt="GATE 1998 N...
<p>Superposition theorem is NOT applicable to networks containing</p>
<p>A voltage source of internal impedance $${\mathrm R}_\mathrm s\;+\;{\mathrm{j...
The short-circuit admittance matrix of a two-port network is $$$\begin{bmatrix}0...
A network has 7 nodes and 5 independent loops. The number of branches in the net...
The parallel $$RLC$$ circuit shown in figure is in resonance. In this circuit <...
Determine the frequency of resonance and the resonant impedance of the parallel ...
The trigonometric Fourier series of a periodic time function can have only
The amplitude spectrum of a Gaussian pulse is
The Fourier transform of a function x(t) is X(f). The Fourier transform of $${{...
The Fourier transform of a voltage of a voltage signal x(t) is X(f). The unit of...
If L$$\left[ {f\left( t \right)} \right]$$ = $$\omega /\left( {{s^2} + {\omega ^...
The z - transform of the time function $$\sum\limits_{k = 0}^\infty {\delta \le...
The transfer function of a zero - order - hold system is
The unit impulse response of a linear time invariant system is the unit step fun...
Consider a rectangular pulse g(t) existing between $$t = \, - {T \over 2}\,and\,...
Flat top sampling of low pass signals
The ACF of a rectangular pulse of duration T is

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