Basic Electronics Paper 2, WASSCE (PC), 2016

Question 4

Question4

(a) Identify the circuit in Figure 1.
(b) Calculate the:
       (i) total peak secondary voltage;
       (ii) peak voltage across each half of the secondary;
       (iii) minimum peak inverse voltage.
(c) Sketch the voltage waveform across RL

 

 

Observation

   The expected answers were;

(a)        Centre tapped full wave rectifier/rectifier/rectifying circuit.

 

 

 

 

            Sketch to include:
             Indication of peak voltage (V) = 10V;            
            Time (t) axis;                                                    
            Waveform;                                                         
            Voltage (V) axis.                                              

Many Candidates failed to recognize the circuit diagram is representing “center-tapped full-wave rectifier circuit”. Also, many did not respond well to 4(c).