4.1 Which ONE of the following machine tools is used in the template lot?
A - NSC Mechanical Technology Welding and Metalwork - Question 4 - 2020 - Paper 1
Question 4
4.1 Which ONE of the following machine tools is used in the template lot?
A. Welding machine
B. Drilling machine
C. Grinding machine
D. Guillotine
4.2 Which weld po... show full transcript
Worked Solution & Example Answer:4.1 Which ONE of the following machine tools is used in the template lot?
A - NSC Mechanical Technology Welding and Metalwork - Question 4 - 2020 - Paper 1
Step 1
Which ONE of the following machine tools is used in the template lot?
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Answer
The correct answer is D. Guillotine. A guillotine is a cutting tool used to cut materials precisely.
Step 2
Which weld position is indicated by the weld symbol in FIGURE 4.2?
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Answer
The correct answer is A. Weld on both sides. This indicates that the weld is to be applied on each side of the joint.
Step 3
Which ONE of the following is used by a hydraulic press in its operation?
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Answer
The correct answer is C. Oil. Hydraulic presses typically operate using hydraulic fluid, which is often oil.
Step 4
The purpose of inert gas in MIGS/MAGS welding is to ...
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Answer
The correct answer is B. protect the flux-coated electrode. Inert gases shield the weld pool from contamination.
Step 5
Identify the welding process shown in FIGURE 4.5 below:
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Answer
The correct answer is A. Arc welding. This is a common welding technique that utilizes an electric arc.
Step 6
FIGURE 4.6 below shows a blowtorch. Component X indicated on the diagram is the ...
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Answer
The correct answer is A. nozzle. This component controls the flow of gas in the blowtorch.
Step 7
FIGURE 4.7 below shows the stress-strain graph obtained during a tensile test on mild steel. What is indicated by P in the graph?
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Answer
The correct answer is D. Yield point. Point P represents the point at which the material begins to deform permanently.
Step 8
Original length is defined as the ...
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Answer
The correct answer is C. length of an object before an external load is applied.
Step 9
Identify the type of machine is shown in FIGURE 4.9 below:
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Answer
The correct answer is A. Hydraulic press. This machine uses hydraulic power to compress materials.
Step 10
Which ONE of the following determines the effect on shrinkage when performing arc welding?
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Answer
The correct answer is A. Amount of gas. This factor can influence the heat and therefore affect shrinkage.
Step 11
Ultrasonic inspection techniques use ... to detect flaws in welded joints.
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Answer
The correct answer is B. sound waves. This non-destructive testing method uses sound waves to find flaws.
Step 12
The maximum plate thickness that can be cut with a manual guillotine is ...
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Answer
The correct answer is C. 1.2 mm. This is typically the maximum thickness for manual guillotines.
Step 13
FIGURE 4.13 below indicates a procedure performed on a grinding wheel. Which aspect is addressed with this procedure?
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Answer
The correct answer is C. Determining the sharpness of the grinding wheel. This procedure often checks the effectiveness of the wheel.
