This set of Engineering Materials Science "Multiple Select Questions & Answers" are based on "PHASE TRANSFORMATION"
PHASE TRANSFORMATION
Multiple Select Questions (MSQ)
Hello reader, here you can find some MSQ with answers. But before reading this I will suggest you take a practice test on these questions given below. so you can understand your strength on this topic.
Click here to go Practice Test section on this topic namely Phase Transformation.
But if you want to read this topic first and then practice it then read it carefully. The Multiple Select Questions (MSQ) based on Phase Transformation are given below:
PART - I
1) For heterogeneous Nucleation Nuclei forms at
Correct Answer is "A", "B", "C", "D"
For heterogeneous Nucleation Nuclei forms at Container surface, Grain Boundaries, Dislocations & Insoluble impurities
2) What does phase transformation involve?
Correct Answer is "A", "B","C"
Transformation involves Movement/rearrangement of atoms, transformation rates kinetics & Changes in microstructure
3) What is/are the phenomenon involved in phase transformation?
Correct Answer is "A", "B"
Nucleation and Growth are the phenomena involved in phase transformation.
4) Fine grain sizes are obtained by
Correct Answer is "A","B", "C"
Fine-grain sizes are obtained by increasing the nucleation rate, decreasing growth rate, and fast cooling.
5) Which physical property is normally measured to determine a CCT diagram?
Correct Answer is "C", "D"
Magnetic permeability and Specific volume are normally measured to determine a CCT diagram.
6) Which alloying elements cause a significant change in the positions and shapes of the curve in the TTT diagram?
Correct Answer is "A", "B", "C", "D"
The presence of Cr, Ni, Mo, and W may cause significant changes in the positions and shapes of the curves in the isothermal transformation diagrams.
7) Which of the following represents incongruent transformation?
Correct Answer is "B", "C", "D"
Melting of alloy, Eutectic reaction, Eutectoid reaction represents incongruent transformation, and Melting of pure materials and Allotropic transformation represents congruent transformation.
8) Which of the following represents congruent transformation?
Correct Answer is "A", "C"
Melting of alloy, Eutectic reaction, Eutectoid reaction represents incongruent transformation, and Melting of pure materials and Allotropic transformation represent congruent transformation.
9) Martensitic transformations
Correct Answer is "A", "C", "D"
Martensitic transformations yield a hard product in steels and are a diffusionless and instantaneous process.
10) Which of the following is applicable to α iron?
Correct Answer is "A", "B", "C", "D"
α iron is soft, ductile, magnetic up to 768°C, and Can be cold worked.
Do you read all the questions and answers given above carefully? let's make a practice on all the questions given above.
Go to: Practice Test on Phase Transformation (MSQ) Part - I
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