ISRO Scientist or Engineer Electronics 2013
For the following questions answer them individually
In the asymptotic bode plot of a transfer function of a closed loop system shown below, the number of poles and zeros are,
Plane Wave travelling in free space has an average Poynting vector of $$3W/m^2$$. Average energy density $$(nJ/m^3)$$ of the wave is:
For two identical n-channel JFET’s connected in parallel as shown in fig. below, the pinch-off voltage of equivalent JFET is :
The velocity at which a sinusoidal signal of $$ 10^9 rad/s$$ travels down loss-less transmission line for which $$ L = 0.4 \mu H/m$$ and $$ C = 40 pF/m is
The Maxwell’s equation $$ \triangledown \times \overline{E} = -\frac{\partial \overline{B}}{\partial t} $$ is obtained from:
A lossless line having characteristic impedance Zo is terminated with a load impedanceof jZo. VSWR of the line will be :
A signal $$ 1 + \cos (2 \pi ft) + \cos (6 \pi ft)$$ where f = 1 MHz is sampled at 3 MHz and Fourier Transform is carried out. How many lines will be seen in Fourier Transform?
Which of the following parameter is improved by introducing pipelining in digital design?
A transmission line having characteristic impedance $$‘Z_t’$$ of varying length in series with a load impedance $$‘Z_L’$$ appears in a Smith Chart on:
