ISRO Scientist or Engineer Electronics 2009
For the following questions answer them individually
ISRO Scientist or Engineer Electronics 2009 - Question 61
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
ISRO Scientist or Engineer Electronics 2009 - Question 62
The divergence of magnetic flux density is
ISRO Scientist or Engineer Electronics 2009 - Question 63
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
ISRO Scientist or Engineer Electronics 2009 - Question 64
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,
ISRO Scientist or Engineer Electronics 2009 - Question 65
Interrupt latencyis the time elapsed between:
ISRO Scientist or Engineer Electronics 2009 - Question 66
Inverse Fourier transform of signal
$$X(j \omega) = 2 \pi \delta (\omega) + \pi \delta (\omega - 4 \pi )+ \pi \delta (\omega + 4 \pi )$$
ISRO Scientist or Engineer Electronics 2009 - Question 67
Determine the discrete-time Fourier Transform for the signal
$$x[n] = [-2, -1, 0, 1, 2]$$
ISRO Scientist or Engineer Electronics 2009 - Question 68
Auto-correlation of a sinusoid $$s(t) = A \sin(\omega t)$$ is
ISRO Scientist or Engineer Electronics 2009 - Question 69
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
ISRO Scientist or Engineer Electronics 2009 - Question 70
When signal frequency is 2000 KHz and IF is 455 KHz,the image frequency could be
