ISRO Scientist or Engineer Electronics 2009
For the following questions answer them individually
Consider a transmission line of characteristic impedance 50 ohms and theline is terminated at one end by +j50 ohms, the VSWRproducedin the transmission line will be
A straight line and a circle of radius a are given. A chord is drawn at random to this circle parallel to the given line. Expected length of the chordis
There is a function $$f(x)$$, such that $$f(0) = 1$$ and $$f'(0) = -1$$ and $$f(x)$$ is positive for all values of $$x$$. Then,
Inverse Fourier transform of signal
$$X(j \omega) = 2 \pi \delta (\omega) + \pi \delta (\omega - 4 \pi )+ \pi \delta (\omega + 4 \pi )$$
Determine the discrete-time Fourier Transform for the signal
$$x[n] = [-2, -1, 0, 1, 2]$$
A source produces 4 symbols with probabilities $$\frac{1}{2},\frac{1}{4},\frac{1}{8},\frac{1}{8}$$ For this source, a practical coding scheme has an average codeword length of 2 bits/symbol. The efficiency of the code is
