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Aim

Theory

Objective

Pretest

Procedure

Simulation

Posttest

References

Feedback

Rockwell-Hardness

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Beginner

Intermediate

Advanced

1. Rockwell test utilizes ____ as a measure of hardness.

a: Load Explanation

Explanation

b: Depth of indentation Explanation

Explanation

c: Diameter of indentation Explanation

Explanation

d: Time of loading Explanation

Explanation

2. What is the apex angle of Rockwell cone indentor?

a: 90 Explanation

Explanation

b: 60 Explanation

Explanation

c: 150 Explanation

Explanation

d: 120 Explanation

Explanation

3. Hardness is dependent on ____ .

a: Viscosity Explanation

Explanation

b: Elastic stiffness Explanation

Explanation

c: Ductility Explanation

Explanation

d: All of the above Explanation

Explanation

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