Observation

• Copy the diagram and indicate the direction of current flow during the

positive half cycle.   

•  State three advantages of a full-wave bridge rectifier.

           
The expected answers were:
(a)       Voltage regulation:
A measure of the degree to which a power source maintains its output voltage stability under varying load conditions.
OR
A change in supply’s terminal from no-load to full load.                                                        

(b)       -  a.c. generators
-  d.c. generators
-  Solar cells
-  Power packs
-  Accumulators
- Hydro
- Nuclear
- Wind

(c)       Three Advantages of full-wave over centre-tapped rectifier
-  The need for a centre-tapped transformer is eliminated
-  Less expensive
-  The PIV rating of the diode is one-half times that of the centre-tapped
circuit for the same d.c. supply.  

• It is smaller in size.
• Output is doubled.

Rather than defining Voltage regulation, many candidates described.