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Mechanical Engineering Exam  >  Mechanical Engineering Tests  >  Test: Production Level - 1 - Mechanical Engineering MCQ

Test: Production Level - 1 - Mechanical Engineering MCQ


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25 Questions MCQ Test - Test: Production Level - 1

Test: Production Level - 1 for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Test: Production Level - 1 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Production Level - 1 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Production Level - 1 below.
Solutions of Test: Production Level - 1 questions in English are available as part of our course for Mechanical Engineering & Test: Production Level - 1 solutions in Hindi for Mechanical Engineering course. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free. Attempt Test: Production Level - 1 | 25 questions in 50 minutes | Mock test for Mechanical Engineering preparation | Free important questions MCQ to study for Mechanical Engineering Exam | Download free PDF with solutions
Test: Production Level - 1 - Question 1
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The following types of materials are usually the most ductile

Test: Production Level - 1 - Question 2
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Pure iron is the structure of

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Test: Production Level - 1 - Question 3
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Gamma iron exits at following temperature

Test: Production Level - 1 - Question 4
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The crystal of alpha iron is
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The crystal of alpha iron is body centred cubic.

Explanation:

The crystal structure of a material refers to the arrangement of its atoms or ions in a repeating pattern extending in all three spatial dimensions. In the case of alpha iron (also known as ferrite), the atoms are arranged in a body-centered cubic (BCC) structure.

In a BCC structure, one atom is at the center of the cube and the other eight atoms are at the corners. This structure is efficient and compact, allowing the atoms to occupy about 68% of the total volume.

It's worth noting that iron can exist in different crystal structures depending on the temperature. At room temperature, iron is in the alpha phase and has a BCC structure. When it is heated, it transitions to the gamma phase (also known as austenite) where it has a face-centered cubic (FCC) structure. Upon further heating, it reverts back to a BCC structure in the delta phase before finally melting.

Test: Production Level - 1 - Question 5
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The percentage of carbon in pig iron varies from
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Pig iron contains at least 92% Fe and has a very high carbon content, typically 3.5 - 4.5%.

Test: Production Level - 1 - Question 6
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Pig iron is the name given to
Test: Production Level - 1 - Question 7
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The unique property of cast iron is its high
Test: Production Level - 1 - Question 8
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In grey cast iron, carbon is present in the form of
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In grey cast iron, carbon is present in the form of free carbon which takes the shape of flakes. Hence, options 2 and 3 are correct.

Grey cast iron gets its name from the grey color that is observed when the material is fractured. This grey color is due to the presence of flake graphite. Cast irons are alloys of iron and carbon, with carbon content greater than 2%. In grey cast iron, the carbon is in the form of graphite flakes which give it its characteristic grey color on the fractured surface.

The free carbon in the form of graphite makes the grey cast iron have good machinability since the graphite flakes are weak points that allow the material to break away more easily. However, this also makes grey cast iron brittle and not suitable for applications where strength and ductility are required.

Test: Production Level - 1 - Question 9
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Sulphur in pig iron tends to make it
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Presence of sulfur tends to make iron hard and produces unsound castings. Wrought iron and steel produced from iron containing sulfur makes wrought iron and steel to be brittle when heated

Test: Production Level - 1 - Question 10
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Iron is
Test: Production Level - 1 - Question 11
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Chilled cast iron has
Test: Production Level - 1 - Question 12
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'Killed steels' are those steels
Test: Production Level - 1 - Question 13
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Hardness of steel depends on
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The amount of carbon in steel directly influences its hardness by forming carbides, enhancing its strength and wear resistance. Higher carbon content leads to increased hardness, as carbon atoms distort the iron lattice, hindering dislocation movement and strengthening the material. Thus, controlling carbon content is crucial in tailoring steel's mechanical properties to meet specific requirements.

Test: Production Level - 1 - Question 14
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Corrosion resistance of steel is increased by addition of
Test: Production Level - 1 - Question 15
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Railway rails are normally made of
Test: Production Level - 1 - Question 16
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Eutectoid steel contains following percentage of carbon
Test: Production Level - 1 - Question 17
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Basic constituents of Monel metal are
Test: Production Level - 1 - Question 18
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German silver is an alloy of
Test: Production Level - 1 - Question 19
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Solder is an alloy consisting of
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Actuallly there were two types of solder tin-lead alloy and tin copper alloy.Due restrictions in several countries only tin-copper solder is in use now.

Test: Production Level - 1 - Question 20
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Cyaniding is the process of
Test: Production Level - 1 - Question 21
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Weld decay is the phenomenon found with
Test: Production Level - 1 - Question 22
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Carbon in iron is an example of
Test: Production Level - 1 - Question 23
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Amorphous material is one
Test: Production Level - 1 - Question 24
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An example of amorphous materials is
Test: Production Level - 1 - Question 25
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Which of the following parameters is/are false for steel?
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Production Level - 1 MCQs with Answers

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