Metalworkers Theory N1 — Document
November 2019 — N1 — Metalworkers Theory
N1
2019
Nated Engineering
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Q1— Section header —
1.5\ the ANSWER BOOK.
1.1Poor lighting
1.2Defective tools and equipment
1.3Failure to use protective equipment
1.4Unguarded machinery
1.5Working without permission (5 1\ [5]5
Q2— Section header —
2.1Name THREE types of punches used in metal work. (3\
2.2Complete the following paragraph with regard to a hammer. Write only the missing term nex t to the question number (2.2.1
2.2.2\in the ANSWER BOOK. The head of hammer is made of (2.2.1\ steel. The hammer head is fitted to
2.3Describe the angle of presentation with regard to chisels. (2\
2.4State the function of each of the following marking off tools:
2.4.1Scriber
2.4.2Outside callipers
2.4.3Try square
2.4.4Trammel
2.4.5Bevel gauge (5 1\ (5
2.5Calculate the hypotenuse side of a rectangular 10 mm steel plate, with 120 mm vertical side and 185 mm horizontal side HINT:
3.1Construct the line of penetration between the two pipes. (2\
3.2Show the shape of the hole in the main pipe. (2\
3.3Calculate the circumference of the 34 mm diameter branch pipe. (2\
3.4Develop the pattern of the bran ch pipe with the aid of drawing instruments. (4\ [10]10
Q4— Section header —
4.1State the following with regard to cast iron
4.1.1Metal properties
4.1.2Any TWO uses (2 2\ (4
4.2Define the following metal properties:
4.2.1Ductility
4.2.2Toughness (2 1\ (2
4.3Write out in full the following abbreviations:
4.3.1DRG
4.3.2MATL (2 1\ (2
4.4Calculate the back mark of the following profiles:
4.4.1Angle iron with 50 mm flange
4.4.2A rolled steel channel with an 80 mm flange (2 2\ (4 [12]12
Q5— Section header —
5.1State FOUR safety precautions which must be considered before and during the use of the following machinery:
5.1.1Punch, shear and cropping machine
5.1.2Angle grinder (2 4\ (8\
5.2Indicate whether the following statements are TRUE' or 'FALSE. Choose the answer and write only 'True' or 'False' next to the question number (5.2.1
5.2.2\ the ANSWER BOOK.
5.2.1When using an angle grinder do not use the screen to protect fellow workers from the stream of sparks.
5.2.2The bare hand may be used to remove drill shavings from the drill bits. (2 1\ (2 [10]10
Q6— Section header —
6.1Name THREE types of rivet heads that are used in the structural steel workshop. (3\
6.2Explain the uses of the following fastening devices:
6.2.1Black bolts
6.2.2Countersunk bolts (2 2\ (4\
6.3Calculate the length of the rivet that is required to rivet two 18 mm thick plates together. Use a 25 mm diameter rivet. (3\ [10]10
Q7— Section header —
7.1Complete the following s entences, with reference to oxyacetylene gas welding. Write only missing term nex t to the question number (7.1.1
7.1.5\ in the ANSWER BOOK. n a cetylene gas cylinder is (7.1.1\ in colour whereas an oxygen cylinder is (7.1.2\
7.2Name FIVE personal protective equipment that should be worn when doing gas welding . G ive a reason why each should be worn.
7.3Describe FOUR c auses of backfire during an oxy acetylene gas cutting process. (4\
7.4Explain how to exti nguish the neutral flame after doing oxy acetylene gas weldin g. (1\ [15]15
Q8— Section header —
8.1State SIX safety precautions that should be considered before, during and after arc welding. (6\
8.2State FOUR advantages of using gas welding machine. (4\
8.3Briefly explain the following welding terms:
8.3.1Earth ing
8.3.2Straight polarity (2 1\ (2\
8.4Briefly explain the purpose in coating the electrodes with a flux. (3 [1 5]
Q9— Section header —
9.1The external stiffening ring
9.2The internal stiffening ring that should be formed from a 10 mm round bar (2 4\ [8
Q3— Section header —
Topics Identified
1
Business Plan
Mark Allocation
Total100 marks
Sections5 + 15 + 10 + 12 + 10 + 10 + 15 = 77 marks
Paper information
TitleDocument
SubjectMetalworkers Theory
LevelN1
Document typeQuestion paper
Year2019
MonthNovember
Pages7
Downloads4
Examination context
Decade2010s
Years ago7y
SeasonSpring (SH)
Start dayFriday
Exam periodNovember 2019
Days since exam2,536
About Metalworkers Theory examination preparation
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