Recent questions tagged gate2001-ec

The transistor shunt regulator shown in the figure is has a regulated output voltage of $10 \mathrm{~V}$, when the input varies from $20 \mathrm{~V}$ to $30 \mathrm{~V}$....

The oscillator circuit shown in the figure,Hartley oscillator with $f_{\text {oscillation }}=79.6 \; \mathrm{MHz}$Colpitts oscillator with $f_{\text {oscillation }}=79.6 ...

The inverting OP-AMP shown in the figure has an open-loop gain of $100.$ The closed-loop gain $\frac{v_{0}}{v_{s}}$ is$-8$$-9$$-10$$-11$

In the figure, assume the OP-AMPs to be ideal. The output $v_{0}$ of the circuit is$10 \cos (100 t)$$10 \int_{0}^{1} \cos (100 \tau) d \tau$$10^{-4} \int_{0}^{t} \cos (10...

In the figure, the $\text{LED}$emits light when both $S_{1}$ and $S_{2}$ are closed.emits light when both $S_{1}$ and $S_{2}$ are open.emits light when only of $S_{1}$ or...

In the TTL circuit in the figure, $\mathrm{S}_{2}$ to $\mathrm{S}_{0}$ are select lines and $\text{X}_{7}$ to $\text{X}_{0}$ are input lines. $\text{S}_{0}$ and $\text{X}...

The digital block in the figure, realized using two positive edge triggered D-flip-flops. Assume that for that for $t < t_{0}, Q_{1} =Q_{2} = 0.$ The circuit in the digit...

In the $\text{DRAM}$ cell in the figure is the $V_{t}$ of the $\text{NMOSFET}$ is $1 \mathrm{~V}$. For the following three combinations of $\mathrm{WL}$ and $\mathrm{BL}$...

The impulse response functions of four linear systems $\mathrm{S}_{1}, \mathrm{~S}_{2}, \mathrm{~S}_{3}, \mathrm{~S}_{4}$ are given respectively by$\begin{array}{ll} h_{1...

An electrical system and its signal-flow graph representations are shown in the figure respectively. The values of $G_{2}$ and $H$, respectively, are$\frac{Z_3(s)}{Z_2(s)...

The open-loop $\text{DC}$ gain of a unity negative feedback system with closed-loop transfer function $\frac{s+4}{s^{2}+7 s+13}$ is$\frac{4}{13}$$\frac{4}{9}$$4$$13$

The feeback control system in the figure is stable.for all $K \geq 0$only if $\mathrm{K} \geq 1$only if $0 \leq \mathrm{K}<1$only if $0 \leq K \leq 1$

The Nyquist sampling interval, for the signal $\text{Sin c } (700 t)+\text{Sin c } (500 t)$ is$\frac{1}{350} \mathrm{sec}$$\frac{\pi}{350} \sec$$\frac{1}{700} \mathrm{sec...

During transmission over a communication channel, bit errors occur independently with probability p. If a block of $n$ bits is transmitted, the probability of at most one...

The PSD and the power of a signal $g(t)$ are, respectively, $\mathrm{S}_{\text{g}}(\omega)$ and $\text{P}_{\text{g}}$. The PSD and the power of the signal $a \text{g}(t)$...

A material has conductivity of $10^{-2} \mathrm{mho/m}$ and a relative permittivity of $4.$ The frequency at which the conduction current in the medium is equal to the di...

A uniform plane electromagnetic wave incident normally on a plane surface of a dielectric material is reflected with a VSWR of $3.$ What is the percentage of incident pow...

A medium wave radio transmitter operating at a wavelength of $492 \mathrm{~m}$ has a tower antenna of height $124 \mathrm{~m}$. What is the radiation resistance of the an...

In a uniform linear array, four isotropic radiating elements are spaced $\frac{\lambda}{4}$ apart. The progressive phase shift between the elements required for forming t...

This section consists of TWENTY questions of FIVE marks each. ANY FIFTEEN out of these questions have to be answered in the Answer Book provided.For the circuit shown in ...

The circuit shown in the figure, operating in steady-state with switch $S_{1}$ closed. The switch $S_{1}$ is opened at $t=0$Find $i_{\mathrm{L}}\left(0^{+}\right)$.Find $...

The admittance parameters of a $2$-port network shown in the figure, given by $Y_{11}=2 \; \mathrm{mho}$, $Y_{12}=-0.5 \mathrm{mho}, \mathrm{Y}_{21}=4.8 \; \mathrm{mho}, ...

For the circuit shown in the figure. $D_{1}$ and $D_{2}$ are indentical diodes with ideality factor of unity. The thermal voltage $V_{T}=25 \; \mathrm{mV}$.Calculate $\ma...

An emitter-follower amplifier is shown in the figure, $Z_{i}$ is the impedance looking into the base of the transistor and $Z_{0}$ is the impedance looking into the emitt...

Assume that the OP-AMP in the figure, ideal Obtain an expression for $v_{0}$ in terms of $v_{s}, \mathrm{R}$, and the reverse saturation current $I_{s}$ of the transistor...

A monochrome video signal that ranges from $0$ to $8 \mathrm{~V}$, is digitized using an $8$-bit $\mathrm{ADC}$.Determine the resolution of the $\mathrm{ADC}$ in $\mathrm...

In the figure, the output of the oscillator, $\mathrm{V}_{1}$ has $10 \mathrm{~V}$ peak amplitude with zero DC value. The transfer characteristic of the Schmitt inverter ...

For the digital block shown in the figure the output $\mathrm{Y}=f\left(\mathrm{~S}_{3}, \mathrm{~S}_{2}, \mathrm{~S}_{1}, \mathrm{~S}_{0}\right)$ where $\mathrm{S}_{3}$ ...

Consider the following sequence of instructions for an $8085$ microprocessor based system.$\begin{array}{lll} \text{Memory Address} & \text{Instructions} \\ \text{FF00} &...