4.1 Identify the lathe component in FIGURE 4.1 below - NSC Mechanical Technology Fitting and Machining - Question 4 - 2022 - Paper 1
Question 4
4.1 Identify the lathe component in FIGURE 4.1 below.
A
B
C
D
4.2 What is the purpose of the screw-cutting dial gauge found on a lathe machine?
A
B
C
D
4.3... show full transcript
Worked Solution & Example Answer:4.1 Identify the lathe component in FIGURE 4.1 below - NSC Mechanical Technology Fitting and Machining - Question 4 - 2022 - Paper 1
Step 1
Identify the lathe component in FIGURE 4.1 below.
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Answer
The component shown in FIGURE 4.1 is commonly referred to as a 'Centre drill' (C). It is specifically designed for drilling a conical hole to help guide larger drills into the workpiece.
Step 2
What is the purpose of the screw-cutting dial gauge found on a lathe machine?
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Answer
The purpose of the screw-cutting dial gauge on a lathe is to allow for precise engagement and control of the lead screw as it cuts threads, hence option (A) is correct.
Step 3
How many axes are displayed on a digital read-out (DRO) system on a lathe machine?
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Answer
A typical digital read-out system on a lathe machine displays 2 axes (A).
Step 4
Which codes does a CNC (computer numerical control) milling machine use for machine tool moving?
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Answer
CNC milling machines primarily use 'G-codes' (C) for controlling the movements of the machine tool.
Step 5
What is the size of the carbide ball in a Brinell hardness tester when used for testing material?
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Answer
The size of the carbide ball used in a Brinell hardness tester is typically 10 mm (C).
Step 6
Identify the type of precision measuring tool in FIGURE 4.6 below.
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Answer
The tool shown in FIGURE 4.6 is known as an 'Outside micrometer' (C), which is used for measuring external dimensions with high accuracy.
Step 7
What type of stress is caused in a cable of a hoisting crane when lifting a load?
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Answer
The type of stress caused in a cable when lifting a load is 'Tensile stress' (A).
Step 8
Which ONE of the following factors determines the value of the safety factor?
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Answer
The factor that determines the value of the safety factor is 'The consequences of failure' (A).
Step 9
Which ONE of the following is an example of PVC?
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Answer
An example of PVC is 'Cling wrap' (C).
Step 10
Which ONE of the following is an advantage of nylon?
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Answer
One notable advantage of nylon is that it 'Can quickly turn to liquid' (B), which allows for easy processing.
Step 11
Identify A in FIGURE 4.11 below.
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Answer
In FIGURE 4.11, 'A' refers to the 'Depth' of the screw thread (C).
Step 12
Which ONE of the following is an advantage of a multiple-start screw thread?
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Answer
An advantage of a multiple-start screw thread is that it 'Produces faster movement' (C).
Step 13
A block and tackle is also known as a ...
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Answer
A block and tackle system is also referred to as a 'Pulley system' (A).
Step 14
Identify the symbol of the hydraulic component in FIGURE 4.14 below.
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Answer
The symbol for the hydraulic component shown in FIGURE 4.14 is that of a 'Pump' (D).
