waecE-LEARNING
Electronics Paper 2, Nov/Dec. 2014  
Questions: 1 2 3 4 5 6 7 Main
General Comments
Weakness/Remedies
Strength















Question 6
  • Draw and label a block diagram of a tuned radio frequency receiver.
  • State two advantages of amplitude modulation over frequency modulation.
  • State one application each of a.m. and f.m.

                   The expected answers were:
(a)

 

 

                                               
(b)  Advantages of amplitude modulation (A.M.) over frequency
      modulation(F.M.)
     (i)    Simple and cheaper transmitting and receiving equipment
     (ii)   Wider reception coverage area
     (iii)  More radio channels
(c) Application of A.M.
      (i)   T.V. video transmission
     (ii)   A.M. broadcasting
   

        Application of F.M.
     (i)    T.V. sound broadcasting
    (ii)    F.M. broadcasting
   (iii)    Cell phone communication


                                                                                                                       
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OBSERVATION

The question was on Communication Systems. The question was unpopular. The performance of the very few candidates that attempted it was average.

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