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Q1— Section header —
1.1Indicate whether the following statements are TRUE or FALSE. Choose the an swer and write only 'true' or 'false' next to the question number (1.1.1
1.1.5\ the ANSWER BOOK.
1.1.1Fillet weld face is the surface of the weld.
1.1.2Electric shock is a state of shock caused by direct or indirect electrical con tact.
1.1.3True arc voltage is the voltage value during the start time interval.
1.1.4Copper is a ferrous metal.
1.1.5Auto darkening welding helmet is ideal for rc and MIG welding. (5 1\ (5\
1.2Complete the following sentences b using the word or words in the list below. Write only the word next to the question number (1.2.1
1.2.5\in the ANSWER BOOK. scratching; melting; joining; heating; base m to their (5\ 0]
Q2— Section header —
2.1State ONE purpose of the following components used in shi elded metal arc elding
2.1.1Electrode
2.1.2Earth clamp
2.1.3Welding machine
2.1.4Chipping hammer
2.1.5Steel brush (5 2\ (10\ (6031012\
2.2All electrodes have different codes to meet the ISO standards. State the type of e lectrode with the codes listed below.
2.2.1E7018
2.2.2E7024
2.2.3E6013
2.2.4E316L (4 1\ (4\
2.3List THREE main methods of creating welds. (3\
2.4Make a neatly labelled sketch of an nequal weld on a fillet joint. 3\
2.5List FIVE methods of how to dispose of waste after completing the shielded metal arc welding (5\ [25]25
Q3— Section header —
3.1There are THREE types of gas cylinders used in oxy acetylene equipment which are as follows: Oxygen Acety
3.1.1State t he colour of each cylinder (A C\. (3\
3.1.2Wh ich of the above cylinders (A, B, C\ has a right hand thread on the valve? (1\
3.1.3Motivate your answer to
Q3— Section header —
3.2List FIVE caus es of back firing while gas welding. (5\ [10] (6031012\10
Q4— Section header —
4.1The FIGURE below shows an oxy acetylene cutting equipment. Write the name of each component next to the letter (A J\ in the ANSWER BOOK
4.2Explain the steps that must be followed when cutting a work piece with the oxy acetylene equipment. (8\
4.3List THREE safe conditions that must be available when using the oxy acetylene cutting equipment in a confined space. (3\
4.4Explain h ow you would test the oxy acetylene cutting equipment for any leaks. (2\
4.5State TWO isadvantages of the oxy acetylene process. (2\
Q5— Section header —
5.1List FIVE disadvantages of gas metal arc welding (5\
5.2State t he FOUR ways in which gas metal arc welding transfers the metal from the electrode to the parent metal. (4\
5.3The FIGURE below shows a gas metal arc welding gun. Write the name of each component next to the letter (A E\ in the ANSWER BOOK. (5\
5.4Illustrate by means of a neat sketch the following welding joints used in GMAW:
5.4.1Butt joint
5.4.2Fillet joint or T joint
5.4.320
Q6— Section header —
6.1Tension test
6.2Guided bend test
6.3Fillet weld test
6.4Notch toughness test
6.510