Basic Electronics Paper 2, WASSCE (SC), 2016

Question 6

  1. Define the term modulation.
  2. Draw and label the block diagram of an AM radio transmitter.

 

Observation

     

  1. (a) Modulation

Defined as the process of changing some characteristics, i.e. amplitude, phase or     
frequency of a carrier wave in accordance with the intensity of the information 
signal.
OR
The process of superimposing low frequency signals on high frequency carriers.

 

  1. (b)Block diagram of an A.M. transmitter

Majority of the candidates that attempted this question gave the block diagrams of a receiver.