Draw integrating and differentiating circuits used for noise reduction. Give an expression for their output voltages.

Draw voltage standing wave patterns for short and open ended transmission lines.

Differentiate between a hub and a switch.

Show 10100110 in bipolar return to zero format.

What is time division multiplexing in communication systems?

Draw a diagram of a parabolic reflector antenna. Write down the expression for its gain in terms of D and A.

Write any four differences between NTSC and PAL standards.

Draw the layers of TCP/IP.

Write the expression for information carried by any message. Calculate I for the alphabets of English language assuming equal probability of their occurrence.

An electromagnetic wave has E field:

E A exp wt -2wx/c

Obtain propagation vector, A and phase velocity of the wave.

Compare the properties of A/4 and A/2 lengths of transmission lines. Write their applications.

Obtain the mathematical equation of an AM wave and draw its frequency spectrum.

What are pulse time modulated signals With the help of an appropriate diagram explain how PWM and, PPM signals are obtained from a PAM signal.

Explain call handling in a cellular mobile system.

Explain the working of a superheterodyne receiver with the help of h block diagram. State its merits.

Draw a neat diagram of a waveguide Magic T structure and explain its electrical performance.

Draw the geometry of light ray launching in a perfect optical fibre. State various losses in a fibre.

State the typical building blocks of a Von Neumann machine. Explain their functions.

What is WAP? State its application.

Explain the circuit switching and the packet switching in inter-networking. State their merits and demerits.