The cascode amplifier is a multistage configuration of

The circuit using a BJT with β = 50 and VBE = 0.7 V is shown in the figure. The base current IB and collector voltage V

For an npn transistor connected as shown in the figure, VBE = 0.7 volts. Given that reverse saturation current of the ju

Given $${r_d} = 20K\Omega ,\,\,{I_{DSS}}\, = \,10mA,\,\,{V_P} = - 8V$$ Zi and Zo of the circuit are respectively

Given $${r_d} = 20K\Omega ,\,\,{I_{DSS}}\, = \,10mA,\,\,{V_P} = - 8V$$ Transconductance in milli-Siemens (mS) and v

Given $${r_d} = 20K\Omega ,\,\,{I_{DSS}}\, = \,10mA,\,\,{V_P} = - 8V$$ ID and VDS under DC conditions are respectiv

For an n-channel MOSFET and its transfer curve shown in the figure, the threshold voltage is

The input resistance Ri of the amplifier shown in the figure is

The effect of current shunt feedback in an amplifier is to

In an ideal differential amplifier shown in the figure, a large value of (RE).

The voltage e0 indicated in the figure has been measured by an ideal voltmeter. Which of the following can be calculated

The Op-Amp circuit shown in figure is a filter. The type of filter and its cut-off frequency are respectively.

Given the ideal operational amplifier circuit shown in figure, indicate the correct transfer characteristics assuming id

Which of the following analog modulation scheme requires the minimum transmitted power and minimum channel bandwidth?

A device with input x(t) and output y(t) is characterized by: y(t) = x2(t). An FM signal with frequency deviation of 90

A carrier is phase modulated (PM) with frequency deviation of 10 kHz by a single tone frequency of 1 kHz. If the single

An output of a communication channel is a random variable 'V' with the probability density function as shown in the figu

Noise with uniform power spectral density of N0 W/Hz is passed through a filter H(ω ) = 2exp (-jωtd) followed by an ide

A signal as shown in figure is applied to a matched filter. Which of the following does represent the output of this mat

A symmetric three-level midtread quantizer is to be designed assuming equiprobable occurrence of all quantization levels

A symmetric three-level midtread quantizer is to be designed assuming equiprobable occurrence of all quantization levels

Despite the presence of negative feedback, control systems still have problems of instability because the

A ramp input applied to an unity feedback system results in 5% steady state error. The type number and zero frequency ga

In the derivation of expression for peak percent overshoot,$$$M_p=exp\left(\frac{-\mathrm{πξ}}{\sqrt{1-\xi^2}}\right)\ti

A unity feedback system is given as,$$$G\left(s\right)=\frac{K\left(1-s\right)}{s\left(s+3\right)}$$$ indicate the corre

Which one of the following polar diagrams corresponds to a lag network?

The open loop transfer function of a unity feedback system is given by g(s)=$${{3{e^{ - 2s}}} \over {s\left( {s + 2} \ri

The polar diagram of a conditionally stable system for open loop gain K=1 is shown in figure. The open loop transfer fun

The open loop transfer function of a unity feedback system is given by G(s)=$${{3{e^{ - 2s}}} \over {s\left( {s + 2} \r

A double integrator plant, $$G(s) = {K \over {{s^2}}},H(s) = 1$$ is to be compensated to achieve the damping ratio $$\

A linear system is equivalently represented by two sets of state equations. $$\mathop x\limits^ \bullet = \,\,{\rm A}X

Decimal 43 in Hexadecimal and BCD number system is respectively

The Boolean expression for the truth table shown is .tg {border-collapse:collapse;border-spacing:0;} .tg td{font-famil

The Boolean function f implemented in the figure using two input multiplexers is

The given figure shows a ripple counter using positive edge triggered flip-flops. If the present state of counter is Q2

The present output Qn of an edge triggered JK flip-flop is logic 0. If J=1, then Qn+1

Both transistors T1 and T2 in figure have a threshold voltage of 1 Volt. The device parameters $${K_1}$$ and $${K_2}$$ o

The transistors used in a portion of the TTL gate shown in figure have β=100. the base-emitter voltage of is 0.7V for a

Many circles are drawn in a Smith chart used for transmission line calculations. The circles shown in Fig. represent

The magnetic field intensity vector of a plane wave is given by $$\overline H \left( {x,y,z,t

Characteristic impedance of a transmission line is 50$$\Omega $$. Input impedance of the open-circuited line is $${Z_{oc

Voltage standing wave pattern in a lossless transmission line with characteristic impedance 50 $$\Omega $$ and a resisti

Voltage standing wave pattern in a lossless transmission line with characteristic impedance 50 $$\Omega $$ and a resisti

Refractive index of glass is 1.5. Find the wavelength of a beam of light with a frequency of $${10^{14}}$$ Hz in glass.

Which one of the following does represent the electric field lines for the $$T{E_{02}}$$ mode in the cross-section of a

Two identical and parallel dipole antennas are kept apart by a distance $$\lambda /4$$ of in the H-plane. They are fed w

The primary reason for the widespread use of Silicon in semiconductor device technology is

A Silicon PN junction at a temperature of 20°C has a reverse saturation current of 10 pico-Amperes (pA). The reverse sat

The band gap of Silicon at room temperature is:

A silicon sample 'A' is doped with 1018 atoms/cm3 of Boron. Another sample 'B' of identical dimensions is doped with 101

The Zener diode in the regulator circuit shown in figure has a Zener voltage of 5.8 Volts and a Zener knee current of 0.

A Silicon PN junction diode under reverse bias has depletion region of width 10 µm. The relative permittivity of Silicon

A MOS capacitor made using p-type substrate is in the accumulation mode. The dominant charge in the channel is due to th

Given the matrix $$\left[ {\matrix{ { - 4} & 2 \cr 4 & 3 \cr } } \right],$$ the eigen vector is

Given an orthogonal matrix $$A = \left[ {\matrix{ 1 & 1 & 1 & 1 \cr 1 & 1 & { - 1} & { -

If $$A = \left[ {\matrix{ 2 & { - 0.1} \cr 0 & 3 \cr } } \right]$$ and $${A^{ - 1}} = \left[ {\matri

The value of the integral $$1 = {1 \over {\sqrt {2\pi } }}\,\,\int\limits_0^\infty {{e^{ - {\raise0.5ex\hbox{$\scriptst

$$\nabla \times \left( {\nabla \times P} \right)\,\,$$ where $$P$$ is a vector is equal to

A fair dice is rolled twice. The probability that an odd number will follow an even number is

A solution of the differential equation $${{{d^2}y} \over {d{x^2}}} - 5{{dy} \over {dx}} + 6y = 0\,$$ is given by

The following differential equation has $$3{{{d^2}y} \over {d{t^2}}} + 4{\left( {{{dy} \over {dt}}} \right)^3} + {y^2} +

Match the following and choose the correct combination Group $$-$$ $${\rm I}$$ $$E.$$ Newton $$-$$ Raphson method $$F.$$

In what range should $$Re(s)$$ remain so that the laplace transform of the function $${e^{\left( {a + 2} \right)t + 5}}$

The Dirac delta Function $$\delta \left( t \right)$$ is defined as

What memory address range is NOT represented by chip 1 and chip 2 in figure? A0 to A15 in this figure are the address li

Consider an 8085 microprocessor system The following program starts at locaton 0100H. LXI SP, 00FF LXI H, 0107 MVI

Consider an 8085 microprocessor system If in addition following code exists from 0109H onwards ORI 40H, ADD M What wi

Impedance Z as shown in the figure is:

The maximum power that can be transferred to the load resistor RL from the voltage source in figure is

For the circuit shown in figure, Thevenin’s voltage and Thevenin’s equivalent resistance at terminals a – b is

The condition on R, L and C such that the step response y(t) in figure has no oscillations, is

A square pulse of 3 volts amplitude is applied to C-R circuit shown in figure. The capacitor is initially uncharged. The

If R1 = R2 = R4 = R and R3 = 1.1R in the bridge circuit shown in figure, then the reading in the ideal voltmeter connect

In a series $$RLC$$ circuit $$R = 2\,k\Omega ,\,\,\,L = \,1H$$ and $$C = \,1/400\,\mu F.$$ The resonant frequency is

For the circuit in figure, the phase current $${{\rm I}_1}$$ is

The ABCD parameters of an ideal n:1 transformer shown in Fig. are $$\left[ {\matrix{ n & 0 \cr 0 & X \c

The h parameters of the circuit shown in Fig. are

Choose the function f (t );−$$\infty$$ < 1 < +$$\infty$$, for which a Fourier series cannot be defined.

Let x(n) = $${\left( {{1 \over 2}} \right)^n}$$ u(n), y(n) = $${x^2}$$, and Y ($$({e^{j\omega }})\,$$ be the Fourier tra

In what range should Re(s) remain so that the Laplace transform of the function e(a+2)t+5 exists?

A sequence x(n) has non-zero values as shown in Fig. The sequence $$$y(n)=\left\{\begin{array}{l}x\left(\frac n2-1\ri

A sequence x(n) has non-zero values as shown in figure. 1 The Fourier transform of y(2n) will be

The region of convergence of z-transform of the sequence $${\left( {{5 \over 6}} \right)^n}u(n) - {\left( {{6 \over 5}}

Which of the following can be impulse response of a causal system?

The output y(t) of a linear time invariant system is related to its input x(t) by the following equation: y(t) = 0.5 x

For a signal x(t) the Fourier transform is X(f). Then the inverse Fourier transform of X(3f+2) is given by

A signal x(n)$$ = \sin ({\omega _0}\,n + \phi )$$ is the input to a linear time-invariant system having a frequency resp

The function x(t) is shown in Fig. Even and odd parts of a unit-step function u(t) are respectively.

The derivative of the symmetric function drawn in Fig .1 will look like

The value of the integral $$\,I = {1 \over {\sqrt {2\,\,\pi } }}\int\limits_0^\infty {\exp \left( { - {{{x^2}} \over 8}

Match the following and choose the correct combination. GROUP 1 E- continuous and aperiodic signal F- continuous