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GATE ECE 1999

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

A dc power supply has a no-load voltage of 30V, and a full-load voltage of 25 V ...
A bipolar junction transistor amplifier circuit is shown in the figure. Assume t...
An NPN transistor (with $${C_\pi }\,\, = \,\,0.3\,\,$$ pf) has a unity gain cut...
An amplifier is assumed to have a single pole high frequency transfer function. ...
The first dominant pole encountered in the frequency response of a compensated o...
An amplifier has an open loop gain of 100, an input impedance of 1 k$$_\Omega $$...
Negative feedback in an amplifier
Crossover distortion behavior is characteristic of
A modulated signal is given by, $$s\left(t\right)=m_1\left(t\right)\cos\left(2{\...
Four independent messages have bandwidths of 100Hz, 100 Hz, 200Hz and 400Hz resp...
The peak-to-peak input to an 8-bit PCM coder is 2 volts . The signal power - to ...
The input to a matched filter is given by $$$S\left( t \right) = \left\{ {\matr...
Consider the points s<sub>1</sub> = −3 + j4 and s<sub>2</sub> = −3 − j2 in the s...
For a second-order system with the closed-loop transfer function $$$T\left(s\ri...
If the closed-loop transfer function T(s) of a unity negative feedback system is...
The loop transfer function of a feedback control system is given by $$$G\left(s\...
The gain margin of a system having the loop transfer function G(s)H(s) =$${{\sqr...
The phase margin (in degrees) of a system having the loop transfer function is $...
The asymptotic bode plot of the minimum phase open-loop transfer function G(s)H(...
Consider a feedback system with the open loop transfer function given by $$G(s)H...
The system mode described by the state equations $$$X = \left( {\matrix{ 0 &a...
For the system described by the state equation $$$\mathop x\limits^ \bull...
The Logical expression $$Y = A + \overline A B$$ is equivalent to
For a binary half-subtractor having two inputs A and B, the correct set of Logic...
The minimized form of the logical expression ($$\overline A \,\overline B \,\ove...
In certain application, four inputs A, B, C, D (both true and complement forms a...
For a binary half-sub-tractor having two inputs A and B, the correct set of logi...
The ripple counter shown in the figure works as a <img class="question-image" s...
Commercially available ECL gates use two ground lines and one negative supply in...
A Darlington Emitter follower circuit is sometimes used in the output stage of a...
The resolution of a 4-bit counting ADC is 0.5 Volts. For an analog input of 6.6 ...
The circuit diagram of a synchronous counter is shown in the figure. Determine t...
An electric field on a plane is described by its potential V = $$20\left(r^{-1}\...
Assuming perfect conductors of a transmission line, pure TEM propagation is NOT ...
In a twin-wire transmission line in air, the adjacent voltage maxima are at 12.5...
In air, a lossless transmission line of length 50 cm with $$L = 10\,\mu H/m,\,\,...
Identify which one of the following will <b>NOT</b> satisfy the wave equation.
Indicate which one of the following modes do NOT exist in a rectangular resonant...
A plane wave in free space with <br>$$\overrightarrow E = \left( {\sqrt \pi }...
A transmitting antenna radiates 251 W isotropically. A receiving antenna, locate...
The average power of an omni-directional antenna varies as the magnitude of cos(...
A 100 m section of an air-filled rectangular wave-guide operating in the $$T{E_{...
An n-channel JEFT has I<sub>DSS</sub> = 2 mA and V<sub>p</sub> = −4 V. It's tran...
If $$\,\,L\left\{ {f\left( t \right)} \right\} = F\left( s \right)$$ then $$\,\,...
If $$CS\;=\overline{A_{15}}\;A_{14}\;A_{13}$$ is used as the chip select logic o...
<p>The value of R (in ohms) required for maximum power transfer in the network s...
<p>The Thevenin equivalent voltage V<sub>TH</sub> appearing between the terminal...
<p>For the network shown in Fig., evaluate the current I flowing through the 2Ω ...
A Delta-connected network with its Wye-equivalent is shown in Fig.P2.4. The resi...
Identify which of the following is NOT a true of the graph shown in Fig. <img al...
In the circuit of figure, the switch $$'S'$$ has remained open for a long time. ...
A coil with a quality factor $$(Q)$$ of $$10$$ is put in series with a capacitor...
A 2-port network is shown in figure. The parameter $${h_{21}}$$ for this network...
A modulated signal is given by s(t)= $${e^{ - at}}$$ cos $$\left[ {({\omega _c} ...
A signal x(t) has a Fourier transform X ($$\omega $$). If x(t) is a real and odd...
$$If\,\,L\left[ {f\left( t \right)} \right]\, = \,F\left( s \right),$$ then $$L\...
The z-transform F(z) of the function f(nT) = $${a^{nT}}$$ is
The z-transform of a signal is given by c(z)=$${1 \over 4}{{{z^{ - 1}}(1 - {z^{ ...
The input to a channel is a band pass signal. It is obtained by linearly modulat...
The input to a matched filter is given by $$s(t) = \left\{ {\matrix{ {10\sin ...
The Nyquist sampling frequency (in Hz) of a signal given by $$16 \times {10^{4\,...

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