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Assertion (A): While rolling metal sheet in rolling mill, the edges are sometimes not straight
and flat but are wavy. [IES-2003]
Reason (R): Non-uniform mechanical properties of the flat material rolled out result in waviness of the edges.
and flat but are wavy. [IES-2003]
Reason (R): Non-uniform mechanical properties of the flat material rolled out result in waviness of the edges.
- a)Both A and R are true and R is the correct explanation of A
- b)Both A and R arc true but R is NOT the correct explanation of A
- c)A is true hut R is false
- d)A is false but R is true
Correct answer is option 'C'. Can you explain this answer?
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Assertion (A): While rolling metal sheet in rolling mill, the edges ar...
Assertion (A): While rolling metal sheet in rolling mill, the edges are sometimes not straight and flat but are wavy.
Reason (R): Non-uniform mechanical properties of the flat material rolled out result in waviness of the edges.
Explanation:
Introduction:
Rolling is a metal forming process in which a metal sheet or strip is passed through a pair of rolls to reduce its thickness and increase its length. The process is commonly used in industries such as steel, aluminum, and copper to produce sheets of desired thickness and shape. However, during the rolling process, the edges of the metal sheet can sometimes become wavy instead of being straight and flat.
Explanation of Assertion (A):
The assertion states that while rolling a metal sheet in a rolling mill, the edges are sometimes not straight and flat but are wavy. This is indeed true. The rolling process involves applying compressive forces on the metal sheet between two rotating rolls, which results in plastic deformation of the material. Due to the non-uniform distribution of these forces, the edges of the sheet experience different degrees of deformation compared to the center portion. This non-uniform deformation causes the edges to become wavy.
Explanation of Reason (R):
The reason states that the waviness of the edges is a result of the non-uniform mechanical properties of the flat material rolled out. This is also true. The mechanical properties of a metal sheet, such as its yield strength, ductility, and hardness, can vary across its width and thickness. These variations can be caused by factors such as variations in composition, microstructure, and processing conditions. During the rolling process, the regions of the sheet with different mechanical properties undergo different degrees of plastic deformation, leading to the waviness of the edges.
Explanation of Correct Answer:
Both the assertion and reason are true. The waviness of the edges during the rolling process is a well-known phenomenon observed in practice. The reason provided for the assertion is also correct, as the non-uniform mechanical properties of the rolled material contribute to the waviness. Therefore, option 'C' is the correct answer.
Conclusion:
In conclusion, during the rolling process of metal sheets in a rolling mill, the edges can become wavy instead of being straight and flat. This phenomenon is attributed to the non-uniform mechanical properties of the rolled material, which cause differential deformation across the width and thickness of the sheet.
Reason (R): Non-uniform mechanical properties of the flat material rolled out result in waviness of the edges.
Explanation:
Introduction:
Rolling is a metal forming process in which a metal sheet or strip is passed through a pair of rolls to reduce its thickness and increase its length. The process is commonly used in industries such as steel, aluminum, and copper to produce sheets of desired thickness and shape. However, during the rolling process, the edges of the metal sheet can sometimes become wavy instead of being straight and flat.
Explanation of Assertion (A):
The assertion states that while rolling a metal sheet in a rolling mill, the edges are sometimes not straight and flat but are wavy. This is indeed true. The rolling process involves applying compressive forces on the metal sheet between two rotating rolls, which results in plastic deformation of the material. Due to the non-uniform distribution of these forces, the edges of the sheet experience different degrees of deformation compared to the center portion. This non-uniform deformation causes the edges to become wavy.
Explanation of Reason (R):
The reason states that the waviness of the edges is a result of the non-uniform mechanical properties of the flat material rolled out. This is also true. The mechanical properties of a metal sheet, such as its yield strength, ductility, and hardness, can vary across its width and thickness. These variations can be caused by factors such as variations in composition, microstructure, and processing conditions. During the rolling process, the regions of the sheet with different mechanical properties undergo different degrees of plastic deformation, leading to the waviness of the edges.
Explanation of Correct Answer:
Both the assertion and reason are true. The waviness of the edges during the rolling process is a well-known phenomenon observed in practice. The reason provided for the assertion is also correct, as the non-uniform mechanical properties of the rolled material contribute to the waviness. Therefore, option 'C' is the correct answer.
Conclusion:
In conclusion, during the rolling process of metal sheets in a rolling mill, the edges can become wavy instead of being straight and flat. This phenomenon is attributed to the non-uniform mechanical properties of the rolled material, which cause differential deformation across the width and thickness of the sheet.
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Assertion (A): While rolling metal sheet in rolling mill, the edges are sometimes not straightand flat but are wavy. [IES-2003]Reason (R): Non-uniform mechanical properties of the flat material rolled out result in waviness of the edges.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?
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Assertion (A): While rolling metal sheet in rolling mill, the edges are sometimes not straightand flat but are wavy. [IES-2003]Reason (R): Non-uniform mechanical properties of the flat material rolled out result in waviness of the edges.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Assertion (A): While rolling metal sheet in rolling mill, the edges are sometimes not straightand flat but are wavy. [IES-2003]Reason (R): Non-uniform mechanical properties of the flat material rolled out result in waviness of the edges.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): While rolling metal sheet in rolling mill, the edges are sometimes not straightand flat but are wavy. [IES-2003]Reason (R): Non-uniform mechanical properties of the flat material rolled out result in waviness of the edges.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
Assertion (A): While rolling metal sheet in rolling mill, the edges are sometimes not straightand flat but are wavy. [IES-2003]Reason (R): Non-uniform mechanical properties of the flat material rolled out result in waviness of the edges.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Assertion (A): While rolling metal sheet in rolling mill, the edges are sometimes not straightand flat but are wavy. [IES-2003]Reason (R): Non-uniform mechanical properties of the flat material rolled out result in waviness of the edges.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): While rolling metal sheet in rolling mill, the edges are sometimes not straightand flat but are wavy. [IES-2003]Reason (R): Non-uniform mechanical properties of the flat material rolled out result in waviness of the edges.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Assertion (A): While rolling metal sheet in rolling mill, the edges are sometimes not straightand flat but are wavy. [IES-2003]Reason (R): Non-uniform mechanical properties of the flat material rolled out result in waviness of the edges.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
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ample number of questions to practice Assertion (A): While rolling metal sheet in rolling mill, the edges are sometimes not straightand flat but are wavy. [IES-2003]Reason (R): Non-uniform mechanical properties of the flat material rolled out result in waviness of the edges.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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