Recent questions tagged gate1991-ec

An excitation is applied to a system at $\mathrm{t}=\mathrm{T}$ and its response is zero for $-\infty<t<T$. Such a system isnon-causal systemstable systemcausal systemuns...

In a series RLC high $Q$ circuit, the current peaks at a frequencyequal to the resonant frequencygreater than the resonant frequencyless than the resonant frequencynone o...

The voltage across an impedance in a network is $V(s)=z(s) I(s)$, where $V(s)$, $Z(s)$ are the Laplace transforms of the corresponding time function $v(t), z(t)$ and $i(t...

Two two-port networks are connected in cascade. The combination is to be represented as a single two-port network. The parameters of the network are obtained by multiplyi...

The pole-zero pattern of a certain filter is shown in the figure below. The filter must be of the following type.low passhigh passall passband pass

The necessary and sufficient condition for a rational function of $\mathrm{s}$. $\mathrm{T}(\mathrm{s})$ to be driving point impedance of an $\text{RC}$ network is that a...

In the signal flow graph of Figure, the gain $c / r$ will be$\frac{11}{9}$$\frac{22}{15}$$\frac{24}{23}$$\frac{44}{23}$

A second order system has a transfer function given by$$ G(s)=\frac{25}{s^2+8 s+25} $$If the system, initially at rest is subjected to a unit step input at $\mathrm{t}=0$...

A unity feedback control system has the open loop transfer function$$ G(s)=\frac{4(1+2 s)}{s^2(s+2)} $$If the input to the system is a unit ramp, the steady state error w...

The characteristic equation of a feedback control system is given by$$ s^3+5 s^2+(K+6) s+K=0 $$Where $K>0$ is a scalar variable parameter. In the root loci diagram of the...

A linear second order single input continuous time system is described by the following set of differential equations$$ \begin{aligned} &x_1(t)=-2 x_1(t)+4 x_2(t) \\ &x_2...

A linear time-invariant discrete-time system is described by the vector matrix difference equation $$ x(k+1)=F \underline{X}(k)+G \underline{u}(k) $$Where $\underline{X}(...

A silicon sample is uniformly doped with $10^{16}$ phosphorous atoms $/ \mathrm{cm}^3$ and $2 \times 10^{16}$ boron atoms $/ \mathrm{cm}^3$. If all the dopants are fully ...

An $n$-type silicon sample, having electron mobility $\mu_n=$ twice the hole mobility $\mu_p$, is subjected to a steady illumination such that the electron concentration ...

The small signal capacitances of an abrupt $P_1-n$ junction is $1 \mathrm{nF} / \mathrm{Cm}^2$ at zero bias. If the built in voltage is $1$ volt, the capacitance at a rev...

Referring to the figure. The switch $S$ is in position $1$ initially and steady state conditions exist from time $\mathrm{t}=0$ to $t=t_0$. The switch is suddenly thrown ...

Discrete transistors $T_1$ and $T_2$ having maximum collector current rating of $0.75$ amps are connected in parallel as shown in the figure. This combination is treated ...

In figure, all transistors are identical and have a high value of beta. The voltage $V_{D C}$ is equal to_________.

In figure, both transistors are identical and have a high value of beta. Take the $dc$ base-emitter voltage drop as $0.7$ volt and $\mathrm{KT} / \mathrm{q}=25 \; \mathrm...

In figure the input $V_1$ is a $100 \mathrm{~Hz}$ triangular wave having a peak to peak amplitude of 2 volts and an average value of zero volts. Given that the diode is i...

In figure, the $n$-channel $\text{MOSFETs}$ are identical and their current voltage characteristics are given by the following expressions:For $V_{D S}, I_D=\left[\left(V...

In order that the circuit of Figure works properly as differentiator, it should be modified to ________ (draw the modified circuit)

Two non-inverting amplifiers, one having a unity gain and the other having a gain of twenty are made using identical operational amplifiers. As a compared to the unity ga...

Two dimensional addressing of $256 \times 8$ bit $\text{ROM}$ using to $1$ selectors requires ________ (how many?) $\text{NAND}$ gates.

The $\textsf{CMOS}$ equivalent of the following $\textsf{nMOS}$ gate (in figure) is___________ (draw the circuit).

In figure, the Boolean expression for the output in terms of inputs $A, B$ and $C$ when the clock $\textsf{'CK'}$ is high, is given by __________.

An $\text{S-R FLIP-FLOP}$ can be converted into a $\textsf{T FLIP FLOP}$ by connecting __________ to $\mathrm{Q}$ and ___________ to $\mathrm{\overline{Q}}$.

In a reflex Klystron oscillatorthe maximum possible efficiency is $58 \%$the frequency of oscillation varies linearly with the reflector voltagethe power output varies co...