ISRO Scientist or Engineer Electronics 2013

Determine the matched filter response h(t) for signal s(t) shown below:

A signal source with 100m wavelength is connected to the input terminals of a 150m long transmission line terminated in its characteristic impedance. The phase difference between the voltages at two ends of the transmission line in steady-state condition is :

A charge $$Q_2 = 8.854 \times 10^{-9} C$$ is located in a vacuum at $$P_2 (2,3,1)$$. The force on $$Q_2$$ due to a charge $$ Q_1 = 4 \pi \times 10^{-3} C$$ at $$P_1 (2,2,1)$$ is: (Note: All the coordinates are measured in Meters. $$a_x, a_y$$, and $$a_z$$ are unit vectors in X, Y and Z direction respectively.)

A low pass filter as shown in following figure is built using an operational amplifier having unity gain bandwidth of 1MHz. What is the bandwidth of this circuit ?

What is the frequency and duty cycle of output Y, when CLK frequency is 1 MHz @ 50% duty cycle?

For an isotropic radiator, electric field intensity at a distance R is measured as 3 V/m. What will be the electric field intensity at a distance 3R ?

The logic function implemented by following 4 :1 MUX is

Characteristic impedance of a two-wire transmission line at 1OKHz is 200-j50 ohms. Line is terminated in its characteristic impedance, and a 28.28V p-p signal is measured at its input. Determine the real power supplied by the signal source to the line?

Which is the correct waveform across capacitor in the following circuit?

Input voltage applied to a circuit is 1V rms and the output is 1 mV rms. Net gain of the circuit is: