4.1 Identify the lathe component shown in FIGURE 4.1
A - NSC Mechanical Technology Fitting and Machining - Question 4 - 2021 - Paper 1
Question 4
4.1 Identify the lathe component shown in FIGURE 4.1
A. Micrometer
B. Screw-cutting dial gauge
C. Centre gauge
D. Thread-pitch gauge
4.2 Identify the CORRECT state... show full transcript
Worked Solution & Example Answer:4.1 Identify the lathe component shown in FIGURE 4.1
A - 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 lathe component shown in FIGURE 4.1 is best identified as D. Thread-pitch gauge.
Step 2
Identify the CORRECT statement about using a centre lathe
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Answer
The correct statement about using a centre lathe 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
The term absolute programming in CNC milling refers to C. The sequence of programming for selecting cutting tools.
Step 4
Tool change takes place automatically between processes on a CNC milling machine, when the ...
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Answer
Tool change happens automatically when 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 C. Copper.
Step 6
Identify the type of tester in FIGURE 4.6.
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Answer
The type of tester shown in FIGURE 4.6 is A. Tensile tester.
Step 7
What is meant by the term tensile stress?
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Answer
Tensile stress refers to D. An internal tensile force present when an external compression 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 shown in FIGURE 4.8 is A. Shear stress.
Step 9
Vesconite is best suited for ...
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Answer
Vesconite is best suited for B. bearings and bushes.
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 statement describing the metric square thread is A. the length of the screw thread, the thickness of the screw thread and the space between the threads are approximately equal.
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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Answer
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 shown in FIGURE 4.14 is B. Directional control valve.
