waecE-LEARNING
GSM Phone Maintenance & Repair Paper 2, May/June 2014  
Questions: 1 2 3 4 5 6 7 8 9 10 11 12   Main
General Comments
Weakness/Remedies
Strength























Question 11
QUESTION 11
  • State three differences between main battery and back-up battery in a GSM phone.
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OBSERVATION

            Though the question was fairly well attempted by some candidates.  However, few           candidates were able to state the features of main battery but could not state the          corresponding feature of a back-up battery to distinguish between them hence they lost marks.
            The expected answers are:

                        Any correct 3 pairs
                        e.g.
 



                                Main Battery                                      Back-up Battery
                        -    Has voltage range between                 Has a voltage of 1.5V                                                             3.6V – 4.2V
                        -    Large in size                                        Smaller in size                                           
           
                        -    Rechargeable                                      Not rechargeable
                        -    Supplies voltage for phone to             keeps the memory of phone/works for
                             power                                                  charging or power system of phone

                        -    Present in all phones                           Not in all phones

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