Recent activity by Misbah Ghaya

Let $I= c\int \int _{R} xy^{2} dxdy$, where $R$ is the region shown in the figure and $c= 6 \times 10^{-4}$. The value of $I$ equals _________. (Give the answer up to two...

Consider an ideal full-bridge single-phase $\text{DC-AC}$ inverter with a $\text{DC}$ bus voltage magnitude of $1000$ $\text{V}$. The inverter output voltage $v\left ( t ...

As shown in the figure below, two concentric conducting spherical shells, centered at $r = 0$ and having radii $r = c$ and $r = d$ are maintained at potentials such that ...

Let $R$ be a region in the first quadrant of the $xy$ plane enclosed by a closed curve $C$ considered in counter-clockwise direction. Which of the following expressions d...

Consider the system as shown belowWhere $y(t)=x(e^t).$ The system is linear and casuallinear and non-casualnon-linear and casualnon-linear and non-casual

The geometric mean radius of a conductor, having four equal strands with each strand of radius $’r’$, as shown in the figure below, is$4\:r$$1.414\:r$$2\:r$$1.723\:r$

The Bode magnitude plot of a first order stable system is constant with frequency. The asymptotic value of the high frequency phase, for the system, is $-180^{\circ}$. Th...

A single-phase voltage source inverter shown in figure is feeding power to a load. The triggering pulses of the devices are also shown in the figure.If the load current i...

A diode circuit feeds an ideal inductor as shown in the figure. Given $v_s=100 \sin(w_t) \: V$ where $\omega = 100\pi \text{ rad/s}$, and $L=31.83 \: mH$. The initial val...

A three-phase fully controlled bridge converter is fed through star-delta transformer as shown in the figure.The converter is operated at a firing angle of $300$. Assumin...

A hysteresis type $TTL$ inverter is used to realize an oscillator in the circuit shown in the figure.If the lower and upper trigger level voltages are $0.9$ $V$ and $1.7$...

A $3$-$bit$ gray counter is used to control the output of the multiplexer as shown in the figure. The initial state of the counter is $0002$. The output is pulled $high$....

The transfer characteristic of the Op-amp circuit shown in figure is

Two monoshot multivibrators, one positive edge triggered $(M_1)$ and another negative edge triggered $(M_2)$, are connected as shown in figureThe monoshots $M_1$ and $M_2...

In the bridge circuit shown, the capacitors are loss free. At balance, the value of capacitance $C_1$ in microfarad is _________.

A periodic waveform observed across a load is represented by$V(t)=\begin{cases} 1+\sin\omega t & 0\leq \omega t< 6\pi \\ -1+ \sin\omega t & 6\pi \leq \omega t< 12\pi \end...

The magnitude Bode plot of a network is shown in the figureThe maximum phase angle $\phi _m$ and the corresponding gain $G_m$ respectively, are$-30^{\circ}$ and $1.73$ $d...

Consider the system described by following state space equations$\begin{vmatrix} \dot{x_1}\\ \dot{x_2} \end{vmatrix}=\begin{vmatrix} 0 &1 \\ -1 & -1 \end{vmatrix}\begin{v...

The block diagram of a system is shown in the figureIf the desired transfer function of the system is $\dfrac{C(s)}{R(s)}=\dfrac{s}{s^2+s+1}$ then $G(s)$ is$1$$s$$1/s$$\d...

The figure shows the single line diagram of a single machine infinite bus system.The inertia constant of the synchronous generator $H = 5 \: MW-s/MVA$. Frequency is $50 \...

The complex power consumed by a constant-voltage load is given by $(P_1+jQ_1)$, where, $1 \: kW \leq P_1 \leq 1.5 \text{ kW}$ and $0.5 \: \text{kVAR} \leq Q_1 \leq 1 \te...

For a $400$ $km$ long transmission line, the series impedance is ($0.0$ + $j0.5$) $Ω/km$ and the shunt admittance is ($0.0$ + $j5.0$) $μmho$/$km$. The magnitude of the se...

The parameters measured for a $220V/110V$, $50 \: Hz$, single-phase transformer are:Self inductance of primary winding $= 45 \: mH$Self inductance of secondary winding $=...

The load shown in the figure absorbs $4$ $kW$ at a power factor of $0.89$ lagging.Assuming the transformer to be ideal, the value of the reactance $X$ to improve the inpu...

A separately excited $300$ $V$ $DC$ shunt motor under no load runs at $900$ $rpm$ drawing an armature current of $2$ $A$. The armature resistance is $0.5$ $Ω$ and leakage...

A non-salient pole synchronous generator having synchronous reactance of $0.8$ $pu$ is supplying $1$ $pu$ power to a unity power factor load at a terminal voltage of $1.1...

An open circuit test is performed on $50$ $Hz$ transformer, using variable frequency source and keeping $V/f$ ratio constant, to separate its eddy current and hysteresis ...

A differentiable non constant even function $x(t)$ has a derivative $y(t)$, and their respective Fourier Transforms are $X(\omega)$ and $Y(\omega)$. Which of the followin...

A sinusoid $x(t)$ of unknown frequency is sampled by an impulse train of period $20$ $ms$. The resulting sample train is next applied to an ideal lowpass filter with a cu...

A continuous-time $LTI$ system with system function $H(w)$ has the following pole-zero plot. For this system, which of the alternatives is $TRUE$?$\mid H(0)\mid \mid H(w...