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Metal Works Paper 3, Nov/Dec. 2013  
Questions: 1 2 3 4 5 Main
General Comments
Strength
Weakness/Remedies









Question 4

(a)       (i)         List three finishing processes used to finish articles in sheet
                                                metalwork.
                                    (ii)        List two tools each that are used to perform the processes in
4(a)(i).

                        (b)       (i)         List  the two types of gas welding blowpipes.
                                    (ii)        State the function of each of the two gauges on gas welding
                                                cylinders.

      

_____________________________________________________________________________________________________
OBSERVATION

This question was very difficult for the candidates as they could not provide the required responses to the various parts of the question.  The required responses to the various parts of the question are:

(a)       (i)         -           planishing;
                  -           polishing
                  -           buffing.

 

                                     (ii)       planishing tools include planishing hammer, stake, etc.
                                                polishing tools include emery cloth, file, scrapper, etc.
                                                buffing tools include dirt free rag, cotton wool, buffing machine,
                                                etc.

                        (b)       (i)         low pressure
                                                High pressure

                                    (ii)        one indicates the hose-line pressure while the other reads the
                                                cylinder content pressure.

 

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