GATE ECE 1991
View Questions

## GATE ECE

In figure, all transistors are identical and have a high value of beta. The voltage VDC is equal to ______.
View Question
Two non-inverting amplifiers, one having a unity gain and other having a gain of twenty, are made using identical opera
View Question
For the signal constellation shown in the figure, the type of modulation is ________.
View Question
A binary source has symbol probabilities 0.8 and 0.2. If extension coding (blocks of 4 symbols) is used, the lower and u
View Question
Two resistors $$\,{R_1}$$ and $$\,{R_2}$$ (in ohms) at temperatures $${T_1}{}^ \circ K$$ and $${T_2}{}^ \circ K$$ respec
View Question
In the signal flow graph of Figure, the gain c/r will be
View Question
A unity feedback control system has the open loop transfer function $$G\left(s\right)\;=\;\frac{4\left(1\;+\;2s\right)} View Question A second order system has a transfer function given by$$\mathrm G\left(\mathrm s\right)\;=\;\frac{25}{\mathrm s^2\;+\;8
View Question
The characteristic equation of a feedback control system is given by s3 +5s2 +(K + 6)s + K =0 Where K &gt; 0 is a scalar
View Question
The open-loop transfer function of a feedback control system is G(s)=$${1 \over {{{\left( {s + 1} \right)}^3}}}$$The ga
View Question
A linear second order single input continuous-time system is described by the following set of differential equations \$
View Question
The four variable function f is given in terms of min-terms as: f (A B C D ) = $$\sum {}$$m (2,3,8,10,11,12,14,15 .) U
View Question
A SR FLIP-FLOP can be converted into a T FLIP-FLOP by connecting ___ to Q and ___ to $$\overline Q$$.
View Question
The CMOS equivalent of the following n MOS gate (figure) is ________ (draw the circuit ).
View Question
In figure, the Boolean expression for the output in terms of inputs A, B and C when the clock ‘CK’ is high, is given by
View Question
The electric field component of a uniform plane electromagnetic wave propagating in the $$Y$$-direction in a lossless
View Question
The input impedance of a short-circuited lossless transmission line guarter wave long is
View Question
A uniform plane electromagnetic wave traveling in free-space enters into a lossless medium at normal incidence. In the m
View Question
In a board side array of 20 isotropic radiators, equally spaced at a distance of $$\lambda /2$$, the veam width between
View Question
In the radiation pattern of a 3-element array of isotropic radiators equally spaced at distances of $${\lambda /4}$$ it
View Question
A silicon sample is uniformly doped with 1016 phosphorous atoms/cm3 and 2 ×1016 boron atoms/cm3. If all the dopants are
View Question
The small signal capacitances of an abrupt P+−N junction is 1 nF at zero bias. If the built-in voltage is 1 volt, the ca
View Question
Referring to the figure. The switch S is in position 1 initially and steady state conditions exist from time t = 0 to t
View Question
The program given below is run on an 8085 based microcomputer system. Determine the contents of the registers: PC, SP, B
View Question
In a series RLC high Q circuit, the current peaks at a frequency
View Question
Two two-port networks are connected in cascade. The combination is to be represented as a single two-port network. The p
View Question
The necessary and sufficient condition for a rational function of s, T(s) to be driving point impedance of an RC network
View Question
The network shown in figure is initially under steady-state condition with the switch in position 1. The switch is moved
View Question
Find the Laplace transform of the waveform x(t) shown in Fig.1.
View Question
The voltage across an impedance in a network is V(s) = Z(s) I(s), where V(s), Z(s) and $${\rm I}$$(s) are the Laplace Tr
View Question
An excitation is applied to a system at $$t = T$$ and its response is zero for $$- \infty &lt; t &lt; T$$. Such a sys
View Question
The pole-zero pattern of a certain filter is shown in the Fig. The filter must be of the following type.
View Question
A signal has frequency components from 300 Hz to 1.8 KHz. The minimum possible rate at which the signal has to be sample
View Question
EXAM MAP
Medical
NEET