The expected answers were:
             (a)    Any two possible causes
                     (i) It is possible that one of the battery’s terminals is loose and occasioned open
                          circuit (Check and confirm, retighten the loose terminal clamp) 
                                
                                                                                                                                   
                   (ii) Another part that could experience loose coupling under the influence of   
                         vibration is the ignition key
                         (Check and confirm, retighten the screws and all other fastening devices on the   
                         switch and drive off)
                  (iii) Flat battery
                  (iv) Battery cells are weak
                  (v)  Steady current appliance left on overnight
                                                                                                                                       
            (b)   Any reasonable well-labelled diagram showing how an alternator is connected to
                    charge a battery.

            The question was on Charging System. It was popular with the candidates. Many candidates that attempted it had little depth of knowledge of part (b) because their responses were not encouraging. The performance of candidates was reported to be fair.