4.1 Identify the lathe component shown in FIGURE 4.1 - NSC Mechanical Technology Fitting and Machining - Question 4 - 2021 - Paper 1
Question 4
4.1 Identify the lathe component shown in FIGURE 4.1.
4.2 Identify the CORRECT statement about using a centre lathe:
A. Do not leave the machine while it is in mot... show full transcript
Worked Solution & Example Answer:4.1 Identify the lathe component shown in FIGURE 4.1 - NSC Mechanical Technology Fitting and Machining - Question 4 - 2021 - Paper 1
Step 1
Identify the lathe component shown in FIGURE 4.1.
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Answer
The component shown in FIGURE 4.1 is best identified as a Thread-pitch gauge (D).
Step 2
Identify the CORRECT statement about using a centre lathe.
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Answer
The correct statement is: A. Do not leave the machine while it is in motion.
Step 3
What is meant by the term absolute programming when using a CNC milling machine?
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Answer
Absolute programming refers to A. Taking the distance of one point to the other on the work piece.
Step 4
Tool change takes place automatically on a CNC milling machine, when the ...
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Answer
The correct answer is C. tool change has been programmed.
Step 5
What type of material is the indenter of a Brinell hardness tester made of?
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Answer
The indenter of a Brinell hardness tester is made of D. Carbide.
Step 6
Identify the type of tester in FIGURE 4.6.
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Answer
FIGURE 4.6 represents a A. Tensile tester.
Step 7
What is meant by the term tensile stress?
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Answer
The term tensile stress refers to C. An internal force present when an external tensile load is applied.
Step 8
Identify the type of stress caused in the rivet in FIGURE 4.8.
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Answer
The type of stress caused in the rivet is A. Shear stress.
Step 9
Vesconite is best suited for ...
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Answer
Vesconite is best suited for A. the lathe chuck.
Step 10
What is polyvinyl chloride (PVC) used for?
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Answer
Polyvinyl chloride (PVC) is used for A. Compressor pistons.
Step 11
Which statement best describes the metric square thread?
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Answer
The best description is A. the length of the screw thread, the thickness of the screw thread and the space between the threads.
Step 12
Multiple-start screw threads are used when ...
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Answer
Multiple-start screw threads are used when C. great strength and quick travel is required.
Step 13
A Joule is defined as the work done when a force of ...
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A Joule is defined as the work done when D. 10 N is exerted over a distance of 1 m in the direction of the force.
Step 14
In FIGURE 4.14 a symbol of a hydraulic component is shown. Identify the symbol.
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Answer
The symbol identified in FIGURE 4.14 is B. Directional control valve.
