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1.1Choose a term from COLUMN B that matches the component in COLUMN A. Write only the letter (A \ next to the question number (1.1.1
1.8\ in the ANSWER BOOK. COLUMN A COLUMN B clamp base power cable guard cutting disc vice handle
1.2Name TWO s afety precaut ions when working with a pedestal grinder. (2\
1.3Draw a neat labelled diagram of a centre finder sho wing the following components mark ing the centre of a pipe: Striking face of centre punch Bubble indicator
1.4Draw a neat , labelled diagram of a six hole flange showing the following: itch circle diameter (PCD\ Inside diameter (ID\ Flange thickness [20]20
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2.1Indicate whether the follo wing statements are TRUE or FALSE by writing only 'True' or 'False' next to the question number (2.1.1
2.1.10\ in the ANSWER BOOK.
2.1.1An abrasive is a substance containing no sharp projecting edges that may penetrate and cut away material. .1.2 A bevel is an angular cut.
2.1.3Reciprocating means the back and forth or the up and down movement of machinery.
2.1.4Mit ring is the cutting of a section in order to form a corner of a specific angle.
2.1.5A gusset is a flat plat e, cut into a particular shape, helping to join rolled steel sections together.
2.1.6An a pex is the lowest point of a roof truss.
2.1.7main tie is the long horizontal member at the top of the roof truss.
2.1.8Assembly aids are simple devices usually made of scrap steel sections like angle iron.
2.1.9Jigs are structures hold ing parts together for tacking or welding.
2.1.10
2.2FIGURE 1 shows fferent types of flames t during an oxy acetylene process. Name each type of flam e (A
2.3FIGURE 2 shows the equipment used for oxy acetylene cutting and welding Identify the marked components by writin g the answer next to the letter F\ in the ANSWER BOOK. FIGURE 2 (6\
2.4What is the purpose of a heating nozzle (1\ [20]20
Q3— Section header —
3.1FIGURE 3 shows the develop ment of a square to square truncated pyramid. FIGURE
3.1.1Draw the giv en views on the DRAWING SHEET (attached\ (3\
3.1.2Develop the pattern of the pyramid using the radial line method on the DRAWING SHEET used
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3.2Draw a neat labelled diagram of a pi tched roof truss show ing the following Inclined rafter King post Queen post [20]20
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4.1Name THREE types of cast iron. (3\
4.2Explain how grey cast iron is welded using oxy acetylene fusion welding. (6\
4.3Tabulate THREE advantages and THREE disadvantages of metallic arc welding of cast iron. (3 (6\
4.4Name FIVE types of d estructive testing on a welded work piece. (5\ [20]20
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5.1Draw a neat labelled diagram of the main co mponents of a shielded metal arc welding (SMAW\ set up. (5\
5.2Why does the tungsten inert gas torch have a collet cap at the rear end of the ungsten electrode? (5\
5.3Explain the metal inert g as (MIG\ welding process. (5\
5.4Describe the pearlite structure of steel. (5\ [20] TOTAL20
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