Virtual Labs

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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Sectioning, Mounting, Grinding, Surface Preparation, Technique for Polishing and Etching of Materials (including Electropolishing, tint etching etc.)

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1. A well-prepared microstructure consists of

a: Etch pits Explanation

Explanation

b: Scratches Explanation

Explanation

c: Flat surface with the presence of surface undulations Explanation

Explanation

d: Flat surface, absence of any scratches and etch pits. Explanation

Explanation

2. Sectioning is important for

a: Making a new material part Explanation

Explanation

b: Any material to be studied for the metallography Explanation

Explanation

c: Studying parts that have failed in service Explanation

Explanation

d: None of the above Explanation

Explanation

3. Metallography is important for

a: Microstructural studies Explanation

Explanation

b: Structure-property correlations Explanation

Explanation

c: Both Explanation

Explanation

d: None Explanation

Explanation

4. Identify the disadvantages of electropolishing.

a: Preferential attack on grain boundaries Explanation

Explanation

b: Causes potential differences between different phases in a multi-phase alloy Explanation

Explanation

c: Both option A and B are correct Explanation

Explanation

d: None of the options A and B are correct. Explanation

Explanation

5.Pits are formed in a microstructure during.

a: Grinding Explanation

Explanation

b: Paper polishing Explanation

Explanation

c: Etching Explanation

Explanation

d: All the above Explanation

Explanation

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