4.1 Identify the type of equipment shown in FIGURE 4.1 below - NSC Mechanical Technology Welding and Metalwork - Question 4 - 2024 - Paper 1
Question 4
4.1 Identify the type of equipment shown in FIGURE 4.1 below.
A. Hydraulic press
B. Power-driven press
C. Drill press
D. Fly press
4.2 What does the 10 on the weld... show full transcript
Worked Solution & Example Answer:4.1 Identify the type of equipment shown in FIGURE 4.1 below - NSC Mechanical Technology Welding and Metalwork - Question 4 - 2024 - Paper 1
Step 1
Identify the type of equipment shown in FIGURE 4.1 below.
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Answer
The equipment shown is a Fly press, which is typically used for shaping or cutting metal using a manual lever.
Step 2
What does the 10 on the weld symbol in FIGURE 4.2 below represent?
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Answer
The number 10 on the weld symbol represents the size of weld needed for the joint.
Step 3
Which metal type will give a dull sound when conducting a sound test?
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Answer
The metal type that will give a dull sound during a sound test is generally high carbon steel.
Step 4
Identify the template in FIGURE 4.4 below.
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Answer
The template shown is a Flange template, used for setting out the dimensions for flange connections.
Step 5
What does C refer to in supplementary welding symbols?
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Answer
C refers to Concave, indicating the shape of the weld notch or profile.
Step 6
Identify the nature of member XY in the steel framework shown in FIGURE 4.7 below.
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Answer
The nature of member XY is a Strut, which is typically used in structures to resist axial compression.
Step 7
Which ONE of the following steps can reduce transverse cracks in arc welding?
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Answer
To reduce transverse cracks in arc welding, it is important to slow cooling after welding.
Step 8
What do you understand by the term Young's modulus of elasticity?
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Answer
Young's modulus of elasticity is a measure of the stiffness of a solid material, defined as the ratio of stress (force per unit area) to strain (deformation in length) in the region of elastic deformation.
Step 9
What will the effect be when cold-worked metal is heated to not higher than 650 °C?
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Answer
The effect of heating cold-worked metal to not higher than 650 °C is relief of internal stress, which can enhance its ductility.
Step 10
What is the length of X in FIGURE 4.12 below?
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Answer
To find the length of X, we can use the Pythagorean theorem. Given the triangle dimensions, the length of X is calculated as follows:
X = rac{30 ext{ mm} imes 40 ext{ mm}}{ ext{Hypotenuse}}
Step 11
What type of movement will force A cause on the see-saw in FIGURE 4.13 below?
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Answer
Force A will cause an Anti-clockwise movement around the pivot of the see-saw.
Step 12
Identify the type of hopper in FIGURE 4.14 below.
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Answer
The hopper shown is a Square-to-square hopper on centre, designed for transitioning materials between different cross-sectional areas.
