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