waecE-LEARNING
Auto Mechanics Paper 2,Nov/Dec 2011.  
Questions:   1 2 3 4 5   Main
General Comments
Weakness/Remedies
Strength



































Question 3

(a)        (i)         Sketch an insulated return system of a motor vehicle wiring.
                        (ii)        State two advantages of the earth return system over the insulated return system of a motor vehicle wiring.

            (b)        State one function each of the following:
                        (i)         alternator;
                        (ii)        regulator;
                        (iii)       solenoid switch;
                        (iv)       starter motor.

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OBSERVATION

Most of the candidates who attempted this question performed excellently well.  However, they had problems with parts (bii) and (biii).  The required responses to these parts are: 

(bii)      regulator controls the rate of charge from the generator thus ensuring constant current for the electrical and electronic parts.

 

(biii)     the solenoid switch connects the battery, ignition switch and starter motor together thus causing the engine to start.

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