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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.

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