Practice previous years' questions for Electromagnetics, Antennas, Microwave Engineering, Digital Communication, Signals & Systems, Analog Electronics, VLSI, and Optical Communications.
Marking scheme: +3.00 positive, -0.75 negative (ICRB Standard).
An LTI system has the input signal $x(n)$. Which of the following sequence of operations is most appropriate to get output $y(n) = x(n - M/L)$?
Consider a low pass random process with a white noise power spectral density $S_{X}(\omega) = N/2$ where $-2\pi B \le \omega \le 2\pi B$, and $0$ (zero) elsewhere. The Auto-correlation function $R_{X}(\tau)$ is
Pole-zero plot of a digital filter is shown below, what is the type of filter?
Determine the DTFT of the sequence $y[n] = (n+1)a^{n}u[n]$, $|a| < 1$. $u[n]$ is unit step sequence.
The function $f(t)$ has the Fourier transform $g(\omega)$. The Fourier transform of $g(t)$ is
The purpose of Design for Test (DFT) process in ASIC design flow is
The coupling between the two inductors is increased from 0 (zero) in the circuit shown. Which of the following statements is true?
Write a Boolean expression for Z in terms of A, B, C, D and E. You need not simplify the expression.
A parallel plate capacitor of 100 pF having an air dielectric is charged to 10 kilovolts. It is then electrically isolated. The plates are pulled away from each other until the distance is ten times more than before. Estimate the energy needed to pull the plates.
How could Schroedinger's equation be relevant in the practical design of a Cathode-Ray Tube?
When compared with stripline, the major disadvantage of microstrip line is
The disadvantage of single-stub matching as compared to double-stub matching, is that
A charge $Q_{2} = 8.854 \times 10^{-9}\text{ C}$ is located in a vacuum at $P_{2}(2, 3, 1)$. The force on $Q_{2}$ due to a charge $Q_{1} = 4\pi \times 10^{-3}\text{ C}$ at $P_{1}(2, 2, 1)$ is
If a material contains $10^{20}\text{ molecules/m}^3$, each molecule having a moment of $8.854 \times 10^{-27}\text{ C}\cdot\text{m}$ parallel to an electric field of $10^{5}\text{ V/m}$, then its dielectric constant is
If every minor of order '$r$' of a matrix '$A$' is 0 (zero), then rank of '$A$' is
Which of the following is true
What is the maximum clock frequency at which following circuit can be operated without timing violations? Assume that the Combinational logic delay is 10 ns and the clock duty cycle varies from 40% to 60%.
Following shift register is initially loaded with the bit pattern "1010". After how many clock cycles will the content of shift register be "1010" again?
Which one of the following is the lowest level of abstraction for representation of a digital system?
The content of the accumulator of 8085 microprocessor after execution of the following instructions will be
MVI A, A7h ORA A RLC
For CMOS implementation of 2 input XOR logic gate, how many nMOS and pMOS transistors are required?
Which of the following principles is applied while designing the output matching network for a high power Class-C amplifier?
Find the approximate output impedance of the VCCS (voltage-controlled current source) based circuit at port Vo.
Which of the following parameters of a Silicon Schottky Diode is higher than that of a corresponding PN junction diode?
Assume the intrinsic standoff ratio for the UJT is 0.8 for the relaxation oscillator circuit given below. The frequency of oscillation of this circuit is approximately equal to