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Mechanical Engineering Exam  >  Mechanical Engineering Test  >  Topicwise Question Bank  >  Test: Equilibrium Diagrams & Phase Changes - 2 - Mechanical Engineering MCQ

Equilibrium Diagrams & Phase Changes - 2 - Free MCQ Practice Test


MCQ Practice Test & Solutions: Test: Equilibrium Diagrams & Phase Changes - 2 (10 Questions)

You can prepare effectively for Mechanical Engineering Topicwise Question Bank for Mechanical Engineering with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Equilibrium Diagrams & Phase Changes - 2". These 10 questions have been designed by the experts with the latest curriculum of Mechanical Engineering 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 30 minutes
  • - Number of Questions: 10

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Test: Equilibrium Diagrams & Phase Changes - 2 - Question 1
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Ms for Fe-C system is around

Detailed Solution: Question 1

Ms temperature: The temperature at which a martensitic transformation starts during cooling after austenitization. This temperature is around 2100C.

Test: Equilibrium Diagrams & Phase Changes - 2 - Question 2
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Following is WRONG about a phase diagram:

Detailed Solution: Question 2

Time dependence phase changes is studied by kinetics of the phase transformations.

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Test: Equilibrium Diagrams & Phase Changes - 2 - Question 3
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Which of the following is not a Hume-Ruthery condition?

Test: Equilibrium Diagrams & Phase Changes - 2 - Question 4
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Horizontal arrest in a cooling curve represents:

Test: Equilibrium Diagrams & Phase Changes - 2 - Question 5
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Which of the following is not a typical site for nucleation during solid stage transformation?

Test: Equilibrium Diagrams & Phase Changes - 2 - Question 6
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Overall transformation rate changes with temperature as follows:

Test: Equilibrium Diagrams & Phase Changes - 2 - Question 7
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Weight % of carbon in mild steels is

Test: Equilibrium Diagrams & Phase Changes - 2 - Question 8
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Nose of a C-curve represents

Test: Equilibrium Diagrams & Phase Changes - 2 - Question 9
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Diamagnetic materials

Detailed Solution: Question 9

Gibbs phase rule is given as
P + F = C + 2
Where P = Number of phase
F = Number of degree of freedom
C = Number of components

Test: Equilibrium Diagrams & Phase Changes - 2 - Question 10
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Hyper eutectoid steels have carbon content

Detailed Solution: Question 10

One group is named hypoeutectoid steel (carbon content less than 0.8%) and the other is hypereutectoid steel (carbon content more than 0.8%). In hypoeutectoid steel, the equilibrium microstructure at room temperature consists of ferrite and pearlite; this ferrite is called proeutectoid ferrite

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About this Mechanical Engineering Practice Test

This test contains 10 MCQs on Equilibrium Diagrams & Phase Changes - 2 with detailed solutions for each question. It is part of the Topicwise Question Bank for Mechanical Engineering course on EduRev, designed to align with the current Mechanical Engineering syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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