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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Mould hardness & Core hardness

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Beginner

Intermediate

Advanced

What is the primary objective of this experiment? (LO1)

a: To determine the porosity of sand Explanation

Explanation

b: To measure the hardness of mould and core samples Explanation

Explanation

c: To evaluate the moisture content in the sand Explanation

Explanation

d: To determine the permeability of the mould Explanation

Explanation

Why is it necessary to take multiple hardness readings on the mould? (LO2)

a: To increase the overall hardness of the mould Explanation

Explanation

b: To get an accurate and uniform measurement of hardness Explanation

Explanation

c: To identify soft spots in the sand Explanation

Explanation

d: To verify the presence of moisture in the mould Explanation

Explanation

Why is the rammer used in the mould hardness test? (LO1)

a: To increase the permeability of the mould Explanation

Explanation

b: To compact the sand uniformly within the moulding flask Explanation

Explanation

c: To mix the sand with binding agents Explanation

Explanation

d: To remove excess moisture from the sand Explanation

Explanation

How many hardness readings are taken for the mould hardness test? (LO1)

a: Three Explanation

Explanation

b: Five Explanation

Explanation

c: Seven Explanation

Explanation

d: Ten Explanation

Explanation

Why are three readings taken in the core hardness test? (LO2)

a: To identify the strongest point of the core Explanation

Explanation

b: To get an average value for accurate measurement Explanation

Explanation

c: To measure the core’s permeability Explanation

Explanation

d: To ensure the core does not contain moisture Explanation

Explanation

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