A bulb in a staircase has two switches, one switch being at the ground floor and the other one at the first floor. The bulb can be turned ON and also can be turned OFF by any one of the switches irrespective of the state of the other switch. The logic of switching of the bulb resembles
Consider a vector field $\overrightarrow{A}\left(\overrightarrow{r}\right)$ . The closed loop line integral $\int \overrightarrow{A}\xb7\overrightarrow{dl}$ can be expressed as
Two systems with impulse responses h_{1}(t) and h_{2}(t) are connected in cascade. Then the overall impulse response of the cascaded system is given by
In a forward biased pn junction diode, the sequence of events that best describes the mechanism of current flow is
In IC technology, dry oxidation (using dry oxygen) as compared to wet oxidation (using steam or water vapor) produces
The maximum value of $\theta $ until which the approximation $\mathrm{sin}\theta \approx \theta $ holds to within 10% error is
The divergence of the vector field $\overrightarrow{A}=x{\hat{a}}_{x}+y{\hat{a}}_{y}+z{\hat{a}}_{z}$ is
The impulse response of a system is $h\left(t\right)=tu\left(t\right)$.For an input $u(t-1)$ , the output is
The Bode plot of a transfer function G(s) is shown in the figure below.
The gain $(20\mathrm{log}\left|G\left(s\right)\right|)$ is 32 dB and -8 dB at 1 rad/s and 10 rad/s respectively. The phase is negative for all ω. Then G(s) is
In the circuit shown below what is the output voltage (V_{out}) if a silicon transistor Q and an ideal op-amp are used?
Consider a delta connection of resistors and its equivalent star connection as shown below. If all elements of the delta connection are scaled by a factor k, k> 0, the elements of the corresponding star equivalent will be scaled by a factor of
For 8085 microprocessor, the following program is executed. MVI A, 05H; MVI B, 05H; PTR: ADD B; DCR B; JNZ PTR; ADI 03H; HLT; At the end of program, accumulator contains
The bit rate of a digital communication system is R kbits/s. The modulation used is 32-QAM. The minimum bandwidth required for ISI free transmission is
For a periodic signal $v\left(t\right)=30\mathrm{sin}100t+10\mathrm{cos}300t+6\mathrm{sin}(500t+\mathrm{\pi}/4)$, the fundamental frequency in rad/s is
In a voltage-voltage feedback as shown below, which one of the following statements is TRUE if the gain k is increased?
A band-limited signal with a maximum frequency of 5 kHz is to be sampled. According to the sampling theorem, the sampling frequency which is not valid is
In a MOSFET operating in the saturation region, the channel length modulation effect causes
Which one of the following statements is NOT TRUE for a continuous time causal and stable LTI system?
The minimum eigenvalue of the following matrix is $\left[\begin{array}{ccc}3& 5& 2\\ 5& 12& 7\\ 2& 7& 5\end{array}\right]$
A polynomial $f(x)={a}_{4}{x}^{4}+{a}_{3}{x}^{3}+{a}_{2}{x}^{2}+{a}_{1}x-{a}_{0}$ with all coefficients positive has