Recent questions without answers

In the circuit shown, the voltage source $V(t)=15+0.1\sin(100t)$ volts. The $PMOS$ transistor is biased such that it is in situation with its gate-source capacitance beig...

An $ADC$ is interfaced with a microprocessor as shown in the figure. All signals have been indicated with typical notations. Acquisition of one new sample of the analog i...

The number of clock cycles for the duration of an input pulse is counted using a cascade of $N$ decade counters $\text{(DC 1 to DC N)}$ as shown in the figure. If the clo...

For the circuit shown in the figure, the rising edge triggered D-flip flop with asynchronous reset has a clock frequency of $\text{1 Hz}$. The $\text{NMOS}$ transistor ha...

A transfer function $G(s)$ with the degree of its numerator polynomial zero and the degree of its denominator polynomial two has a Nyquist plot shown in the figure. The t...

In the circuit shown in the figure, both the $\text{NMOS}$ transistors are identical with their threshold voltages being $\text{5 V}$. Ignoring channel length modulation,...

The signal $x[n]=\sin(\pi n/6)/(\pi n)$ is processed through a linear filter with the impulse response $h[n]=\sin(\omega_cn)/(\pi n)$ where $\omega_c>\pi/6$. The output o...

A signal is band-limited to $\text{0 to 12 kHz}$. The signal spectrum is corrupted by additive noise which is band-limited to $\text{10 to 12 kHz}$. Theoretically, the mi...

Consider a low-pass filter module with a pass-band ripple of $\delta$ in the gain magnitude. If $M$ such identical modules are cascaded, ignoring the loading effects, the...

The fundamental period of the signal $x(t)=2\cos(\frac{2\pi t}{3})+\cos(\pi t)$, in seconds, is ________________ s.

If the deflection of the galvanometer in the bridge circuit shown in the figure is zero, then the value of $R_X$ in ohms is _______________ $\Omega.$

In the potentiometer circuit shown in the figure, the expression for $V_X$ is ____________.$(1-2\alpha)V$$(1-\alpha)V$$(\alpha-1)V$$\alpha V$

The open loop transfer function of a system is $G(s)=\frac{s^2+6s+10}{s^2+2s+2}.$ The angles of arrival of its root loci are$\pm \frac{\pi}{4}$$\pm \frac{\pi}{3}$$\pm \fr...

A system is represented in state-space as $\dot{X}=AX+BU,$ where $A=\begin{bmatrix} 1 & 2 \\ \alpha & 6\end{bmatrix}$ and $B=\begin{bmatrix} 1 \\ 1\end{bmatrix}$. The val...

A liquid level measurement system employing a radio-isotope is mounted on a tank as shown in the figure. The absorption coefficient of water for the radiation is $7.7 \;m...

The figure shows a spot of light of uniform intensity $50\;W/m^2$ and size $10\;mm\times10\;mm$ incident at the exact center of a photo-detector, comprising two identical...

A beam of monochromatic light passes through two glass slabs of the same geometrical thickness at normal incidence. The refractive index of the first slab is $1.5$ and th...

The resolving power of a spectrometer consisting of a collimator, a grating and a telescope can be increased byincreasing the angular magnification of the telescopeincrea...

Choose the most appropriate word from the options given below to complete the following sentence.A person suffering from Alzheimer’s disease ___________ short-term memory...

Choose the most appropriate word from the options given below to complete the following sentence.____________is the key to their happiness; they are satisfied with what t...

Which of the following options is the closest in meaning to the sentence below? $\text{“As a woman. I have no country.”}$Women have no country.Women are not cit...

The population of a new city is $5$ million and is growing at $20\%$ annually. How many years would it take to double at its growth rate?$3-4$ years$4-5$ years$5-6$ years...

In a group of four children, Som is younger to Riaz. Shiv is elder to Ansu. Ansu is youngest in the group. Which of the following statements is/are required to find the e...

Moving into a world of big data will require us to change our thinking about the merits of exactitude. To apply the conventional mindset of measurement to the digital, co...

$X$ is $1$ km northeast of $Y$. $Y$ is $1$ km southeast of $Z$. $W$ is $1$ km west of $Z$. $P$ is $1$ km south of $W$. $Q$ is $1$ km east of $P$. What is the distance bet...

$10\%$ of the population in a town is $HIV^+$. A new diagnostic kit for $HIV$ detection is available; this kit correctly identifies $HIV^+$ individuals $95\%$ of the time...

Given $x(t)=3\sin (1000\; \pi t)\; and\;y(t)=5\cos (1000\;\pi t+\frac{\pi}{4})$The $x-y$ plot will bea circlea multi-loop closed curvea hyperbolaan ellipse

Given that $x$ is a random variable in the range $[0,\infty]$ with a probability density function $\frac{e \frac{-x}{2}}{K}$, the value of the constant $K$ is __________.

The figure shows the plot of $y$ as a function of $x$The function shown is the solution of the differential equation (assuming all initial conditions to be zero) is :$\fr...

A vector is defined as $$f=y\hat{i}+x\hat{j}+z\hat{k}$$where $\hat{i},\hat{j},\hat{k}$ are unit vectors in Cartesian $(x,y,z)$ coordinate system.The surface integral $f....

The figure shows the schematic of a production process with machines $A, B$ and $C$. An input job needs to be pre-processed either by $A$ or by $B$ before it is fed to $C...

The circuit shown in figure was at steady state for $t < 0$ with the switch at position $‘A’$. The switch is thrown to position $‘B’$ at time $t=0$. The voltage V(volts)...

The average real power in watts delivered to a load impedance $Z_L=(4-j2)\Omega$ by an ideal current source $i(t)=4\sin(\omega t+20^\circ)A $ is ____________.

Time domain expressions for the voltage $v_1(t)$ and $v_2(t)$ are given as$$v_1(t)=V_m\sin(10t-130^\circ)\; and\; v_2(t)=V_m\cos(10t+10^\circ)$$Which one of the following...

A pHelectrode obeys Nernst equation and is being operated at $25^\circ C$. The change in the open circuit voltage in millivolts across the electrode for a pH change from ...

The pressure and velocity at the throat of a Venturi tube, measuring the flow of a liquid, are related to the upstream pressure and velocity, respectively, as follows:pre...

Semiconductor strain gages typically have much higher gage factors than those of metallic strain gages, primarily due to:higher temperature sensitivityhigher Poisson’s ra...

For a rotameter, which one of the following statements is $TRUE$?the weight of the float is balanced by the buoyancy and the drag force acting on the floatthe velocity of...

For the op-amp shown in the figure, the bias currents are $I_{b1}=450\;nA$ and $I_{b2}=350\;nA$. The values of the input bias current $(I_B)$ and the input offset current...

The amplifier in the figure has gain of $-10$ and input resistance of $50\;k\Omega$. The values of $R_i$ and $R_f$ are:$R_i=500\;k\Omega, R_f=50\;k\Omega$$R_i=50\;k\Omega...