11.1 Identify the hopper in FIGURE 11.1 - NSC Mechanical Technology Welding and Metalwork - Question 11 - 2023 - Paper 1

To find the true length A–1, we use the Pythagorean theorem:

$A–1 = \\sqrt{100^2 + 125^2 + 450^2} \\approx 477.62 \, \text{mm}$

To find the true length A–2, we use:

$A–2 = \\sqrt{400^2 + 125^2 + 450^2} \\approx 614.92 \, \text{mm}$

To find the true length B–3, we use:

$B–3 = \\sqrt{375^2 + 100^2 + 450^2} \\approx 594.24 \, \text{mm}$

To calculate A–B, we apply the formula:

$A–B = \frac{\pi \times D}{12} = \frac{\pi \times 800}{12} \approx 209.44 \, \text{mm}$

For O–1, we have:

$O–1 = \frac{\pi \times d}{12} = \frac{\pi \times 600}{12} \approx 157.08 \, \text{mm}$

To find A–0:

• Plan length / base line: 400 - 30 = 100

• True length:

$A–0 = \sqrt{100^2 + 500^2} = \sqrt{260000} \approx 509.90 \, \text{mm}$

A square-to-round transformer is used to connect ducting sections of dissimilar shapes to each other.