ISRO Scientist or Engineer Electronics 2010


For the following questions answer them individually

Question 1

An LTI system has the input signal x(n). Which of the following sequence of operations is most appropriate to get output $$y(n) = x \left(n - \frac{M}{L}\right)$$.

Video Solution

Question 2

Consider a low pass random process with a white noise power spectral density
$$ S_{x} (\omega)=\frac{N}{2}$$ where $$-2 \pi B \leq \omega \leq 2 \pi B $$
                    0 elsewhere
The Auto-correlation function $$R_{x}(\tau)$$ is

Video Solution

Question 3

Pole-zero plot of a digital filter is shown below, what is the type of filter?

Video Solution

Question 4

Determine the DTFT of the sequence $$y[n] = (n + 1) \alpha^{n} u[n], \mid \alpha \mid < 1.u[n]$$ is unit step sequence

Video Solution

Question 5

The function f(t) has the Fourier transform g$$(\omega)$$. The Fourier transform of g(t) is

Video Solution

Question 6

The purpose of Design for Test (DFT) process in ASIC design flow is

Video Solution

Question 7

The coupling between the two inductors is increased from zero in the circuit shown.' Which of the following statements is true?

Video Solution

Question 8

Write a Boolean expression for Z in terms of A, B, C, D and E. You need not simplify the expression.

Video Solution

Question 9

Aparallel 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 neededto pull the plates.-

Video Solution

Question 10

How could Schroedinger’s equation be relevant in the practical design of a CathodeRay Tube?

Video Solution

Register with


Boost your Prep!

Download App