GATE EC Analog Circuits questions

In the given circuit, $V_{0}$ is

In the differential amplifer of the figure, if the source resistance of the current source $I_{E E}$ is infinite, then the common-mode gain is

In given figure, the steady state output voltage corresponding to the input voltage $3+4 \sin 100 t \mathrm{~V}$ is

if the $\text{op-amp}$ in given figure, has an input offset voltage of $5 \; \mathrm{mV}$ and an open-loop voltage gain of $10,000,$ then $v_{0}$ will be

In the circuit of the figure, assume that the transistor is in active region. It has a large $\beta$ and its base-emitter voltage is $0.7 \mathrm{~V}$. The value of $\mathrm{I}_{\mathrm{c}}$ is

For the circuit in the figure, the voltage $v_{0}$ is

A Darlington emitter - follower circuit is sometimes used in the output stage of a $\text{TTL}$ gate in order to

Crossover distortion behaviour is characteristic of

In the cascade amplifier shown in the given figure, if the common - emitter stage $\left(Q_{1}\right)$ has a transconductance $\mathrm{gm}_{1}$, and the common base stage $\left(Q_{2}\right)$ has a transconductance $\mathrm{gm}_{2^{\prime}}$, then the overall transconductance $g\left(=i_{0} / v_{1}\right)$ of the cascade amplifier is

Negative feedback in an amplifier

The first dominant pole encountered in the frequency response of a compensated $\text{op - amp}$ is approximately at

The early effect in a bipolar junction transistor is caused by

An amplifier is assumed to have a single-pole high-frequency transfer function. The rise time of its output response to a step function input is $35\;\text{nsec}$. The upper $-3 \; d B$ frequency (in $\text{MHz}$) for the amplifier to a sinusoidal input is approximately at

An amplifier has an open-loop gain of $100$, an input impedance of $1 \; \mathrm{k \Omega}$, and an output impedance of $100 \; \Omega$. A feedback network with a feedback factor of $0.99$ is connected to the amplifier in a voltage series feedback mode. The new input and output impedances, respectively, are

An $\text{npn}$ transistor (with $\mathrm{C}=0.3 \; \mathrm{pF}$ ) has a unity gain cutoff frequency $f_{\mathrm{T}}$ of $400 \; \mathrm{MHz}$ at a $\text{dc}$ bias current $I_{c}=1 \mathrm{~mA}$. The value of its $C_{\mu}$ (in $\mathrm{~pF}$ ) is approximately $\left(\mathrm{V}_{\mathrm{T}}=26 \; \mathrm{mV}\right)$

An $n$-channel $\text{JEFT}$ has $\mathrm{I}_{\mathrm{DSS}}=2 \mathrm{~mA}$ and $\mathrm{V}_{p}=-4 \mathrm{~V}$. Its transconductance $\mathrm{gm}$ (in milliohm) for an applied gate-to-source voltage $\mathrm{V}_{\mathrm{GS}}$ of $-2 \mathrm{~V}$ is

In the $\text{MOSFET}$ amplifier of the figure is the signal outputs $V_{1}$ and $V_{2}$ obey the relationship

For full wave rectification, a four diode bridge rectifier is claimed to have the following advantages over a two diode circuit : (1) less expensive transformer, (2) smaller size transformer, and (3) suitability for higher voltage application. Of these,

In a series regulated power supply circuit, the voitage gain $A_{v}$ of the 'pass' transistor satisfies the condition

One input terminal of high gain comparator circuit is connected to ground and a sinusoidal voltage is applied to the other input. The output of comparator will be