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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

To design and manufacture a wooden pattern for a given casting

Choose difficulty:

Beginner

Intermediate

Advanced

What is a pattern in the casting process? (LO1)

a: A moulding material Explanation

Explanation

b: A tool for shaping metal Explanation

Explanation

c: A model used to create a mould cavity Explanation

Explanation

d: A finished casting Explanation

Explanation

Why are patterns made larger than the actual casting? (LO3)

a: To increase production speed Explanation

Explanation

b: To compensate for shrinkage and machining allowances Explanation

Explanation

c: To reduce material usage Explanation

Explanation

d: To avoid the use of cores Explanation

Explanation

What is the function of a runner in the moulding process? (LO1)

a: To support the core Explanation

Explanation

b: To allow gases to escape Explanation

Explanation

c: To distribute molten metal to the mould cavity Explanation

Explanation

d: To improve surface finish Explanation

Explanation

Why is draft allowance provided in a pattern? (LO3)

a: To prevent the pattern from breaking Explanation

Explanation

b: To make removal of the pattern from the mould easier Explanation

Explanation

c: To compensate for shrinkage Explanation

Explanation

d: To avoid material wastage Explanation

Explanation

Which of the following allowances is given to counteract distortion in the casting? (LO3)

a: Shrinkage allowance Explanation

Explanation

b: Draft allowance Explanation

Explanation

c: Distortion allowance Explanation

Explanation

d: Machining allowance Explanation

Explanation

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