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Auto Electrical Works Paper 2, May/June 2014  
Questions: 1 2 3 4   Main
General Comments
Weakness/Remedies
Strength













































Question 2

 

(a)        State one way by which voltage drop in a starter motor operation can be minimized.
(b)        State the function of a starter motor.
(c)        (i)         List six components of a starter motor.
            (ii)        State one function each of any two components mentioned in 2(c)(i).

The expected answers were:
            (a)        Any one way stated below
            Keep the length of the cable connecting the positive terminal of the battery to the    
            solenoid as short as possible  
            Stabilize the voltage for the vehicle’s charging system
                                                                      
            (b)      The function of the starter motor is to crank the engine.
                      (Additional info: Over a certain speed to enable the fuel in the vehicle to be
                       atomized and the mixture to be compressed) 
                                                                                                                                  
             (c)(i)   Any six components listed below
                        Drive assembly (i.e. shift lever)
                        Brushes and commutator
                        Armature
                        Main field
                        Solenoid
                        Pinion gear
                        Bushing
                                                                                                                                          
                 (ii)   Any reasonable function of any two components above
                                                                                                                                                           
The question was on Starting System. The question was unpopular with the candidates. Many candidates could not correctly apply the right theory that runs through the question which spelt their undoing. The candidates’ performance was not encouraging.

 

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