problem 1: What are the three fundamental units of a communication system?
problem 2: prepare down the two types of signals.
problem 3: What is meant by the term modulation?
problem 4: What is meant by the term band width of information signal?
problem 5: Name the various types of modulations in the analog communication.
problem 6: What characteristic or features of modulated carrier wave does vary in the amplitude modulation?
problem 7: What characteristic or features of modulated carrier wave does differ in frequency modulation.
problem 8: Why is short-wave band used for long distance radio broadcast?
problem 9: Name the two uses of the optical transmission.
problem 10: Why is the transmission of signals via a co-axial cable not possible for frequencies more than 20 MHz?
problem 11: Derive an expression for covering the range of TV transmission tower.
problem 12: In TV transmission name the type of modulation of:
a) Picture and synchronizing pulse and
b) The sound.
problem 13: What do you mean by ionosphere? What is its use in the radio broadcast?
problem 14: What do you mean by amplitude modulation? Represent the process graphically. prepare its two limitations and two merits.
problem 15: State the two factors by which the range of TV signal can be raised?
problem 16: Differentiate between ‘point to point’ and ‘broadcast’ communication modes, provide one illustration of each.