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Aim

Theory

Objective

Pretest

Procedure

Simulation

Posttest

References

Feedback

Rockwell-Hardness

Choose difficulty:

Beginner

Intermediate

Advanced

1. For how long is the load maintained in a Brinell test?

a: 2-4 seconds Explanation

Explanation

b: 10-15 seconds Explanation

Explanation

c: 20-35 seconds Explanation

Explanation

d: 45-55 seconds Explanation

Explanation

2. What kind of indenter is used in a Brinell test?

a: Diamond cone Explanation

Explanation

b: Steel ball Explanation

Explanation

c: Pen dot Explanation

Explanation

d: Long tube Explanation

Explanation

3. What is a limitation of the Rockwell test?

a: Slow speed Explanation

Explanation

b: Personal error Explanation

Explanation

c: Bigger size of indentation Explanation

Explanation

d: Different indenters Explanation

Explanation

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