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## GATE ECE 1991

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

In figure, all transistors are identical and have a high value of beta. The volt...
Two non-inverting amplifiers, one having a unity gain and other having a gain of...
For the signal constellation shown in the figure, the type of modulation is ____...
A binary source has symbol probabilities 0.8 and 0.2. If extension coding (block...
Two resistors $$\,{R_1}$$ and $$\,{R_2}$$ (in ohms) at temperatures $${T_1}{}^ \... In the signal flow graph of Figure, the gain c/r will be <img alt="GATE 1991 Con... A unity feedback control system has the open loop transfer function$$G\left(s\...
A second order system has a transfer function given by $$\mathrm G\left(\mathrm ... The characteristic equation of a feedback control system is given by <br>s<sup>3... The open-loop transfer function of a feedback control system is G(s)=$${1 \over...
A linear second order single input continuous-time system is described by the fo...
The four variable function f is given in terms of min-terms as: f (A B C D ) = \$...
A SR FLIP-FLOP can be converted into a T FLIP-FLOP by connecting ___ to Q and __...
The CMOS equivalent of the following n MOS gate (figure) is ________ (draw the ...
In figure, the Boolean expression for the output in terms of inputs A, B and C w...
The electric field component of a uniform plane electromagnetic wave propagating...
The input impedance of a short-circuited lossless transmission line guarter wave...
A uniform plane electromagnetic wave traveling in free-space enters into a lossl...
In a board side array of 20 isotropic radiators, equally spaced at a distance of...
In the radiation pattern of a 3-element array of isotropic radiators equally spa...
A silicon sample is uniformly doped with 10<sup>16</sup> phosphorous atoms/cm<su...
The small signal capacitances of an abrupt P<sup>+</sup>−N junction is 1 nF at z...
Referring to the figure. The switch S is in position 1 initially and steady stat...
The program given below is run on an 8085 based microcomputer system. Determine ...
In a series RLC high Q circuit, the current peaks at a frequency
Two two-port networks are connected in cascade. The combination is to be represe...
The necessary and sufficient condition for a rational function of s, T(s) to be ...
The network shown in figure is initially under steady-state condition with the s...
Find the Laplace transform of the waveform x(t) shown in Fig.1. <img class="ques...
The voltage across an impedance in a network is V(s) = Z(s) I(s), where V(s), Z(...
An excitation is applied to a system at $$t = T$$ and its response is zero for ...
The pole-zero pattern of a certain filter is shown in the Fig. The filter must b...
A signal has frequency components from 300 Hz to 1.8 KHz. The minimum possible r...

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