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Assertion (A): Machine tool beds are generally made of grey cast iron.Reason (R): Cast iron possesses good self-lubricating properties.
- a)Both A and R are individually true and R is the correct explanation of A
- b)Both A and R are individually true but R is not the correct explanation of A
- c)A is true but R is false
- d)A is false but R is true
Correct answer is option 'A'. Can you explain this answer?
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Assertion (A): Machine tool beds are generally made of grey cast iron....
Ans. (a) Both A and R are true and R provides correct explanation for A.
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Assertion (A): Machine tool beds are generally made of grey cast iron....
Machine Tool Beds Made of Grey Cast Iron
Assertion (A): Machine tool beds are generally made of grey cast iron.
Reason (R): Cast iron possesses good self-lubricating properties.
Explanation:
Grey cast iron is a material that has been used extensively in the manufacturing of machine tool beds. The material is known for its high strength, good wear resistance, and excellent damping properties. The following points explain why machine tool beds are made of grey cast iron:
- High strength: Grey cast iron is a strong material that can withstand the high loads and stresses that are placed on machine tool beds during operation. The material is also resistant to fatigue failure, which makes it ideal for use in heavy-duty applications.
- Good wear resistance: Machine tool beds are subject to constant wear and tear, which can lead to premature failure if the material is not durable enough. Grey cast iron has good wear resistance, which means that it can withstand the abrasive forces that are generated during machining operations.
- Excellent damping properties: Machine tool beds need to be able to absorb vibrations that are generated during operation. Grey cast iron has excellent damping properties, which means that it can effectively absorb vibrations and prevent them from being transmitted to the workpiece.
The reason given for this assertion is that cast iron possesses good self-lubricating properties. This statement is not entirely accurate. While it is true that cast iron has a natural lubricity, this property is not significant enough to be a deciding factor in the selection of material for machine tool beds. The primary reasons for using grey cast iron in machine tool beds are its high strength, good wear resistance, and excellent damping properties.
Conclusion:
In conclusion, machine tool beds are generally made of grey cast iron due to its high strength, good wear resistance, and excellent damping properties. While cast iron does possess some self-lubricating properties, this is not the primary reason for its use in machine tool beds.
Assertion (A): Machine tool beds are generally made of grey cast iron.
Reason (R): Cast iron possesses good self-lubricating properties.
Explanation:
Grey cast iron is a material that has been used extensively in the manufacturing of machine tool beds. The material is known for its high strength, good wear resistance, and excellent damping properties. The following points explain why machine tool beds are made of grey cast iron:
- High strength: Grey cast iron is a strong material that can withstand the high loads and stresses that are placed on machine tool beds during operation. The material is also resistant to fatigue failure, which makes it ideal for use in heavy-duty applications.
- Good wear resistance: Machine tool beds are subject to constant wear and tear, which can lead to premature failure if the material is not durable enough. Grey cast iron has good wear resistance, which means that it can withstand the abrasive forces that are generated during machining operations.
- Excellent damping properties: Machine tool beds need to be able to absorb vibrations that are generated during operation. Grey cast iron has excellent damping properties, which means that it can effectively absorb vibrations and prevent them from being transmitted to the workpiece.
The reason given for this assertion is that cast iron possesses good self-lubricating properties. This statement is not entirely accurate. While it is true that cast iron has a natural lubricity, this property is not significant enough to be a deciding factor in the selection of material for machine tool beds. The primary reasons for using grey cast iron in machine tool beds are its high strength, good wear resistance, and excellent damping properties.
Conclusion:
In conclusion, machine tool beds are generally made of grey cast iron due to its high strength, good wear resistance, and excellent damping properties. While cast iron does possess some self-lubricating properties, this is not the primary reason for its use in machine tool beds.
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Assertion (A): Machine tool beds are generally made of grey cast iron.Reason (R): Cast iron possesses good self-lubricating properties.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer?
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Assertion (A): Machine tool beds are generally made of grey cast iron.Reason (R): Cast iron possesses good self-lubricating properties.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. 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): Machine tool beds are generally made of grey cast iron.Reason (R): Cast iron possesses good self-lubricating properties.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. 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): Machine tool beds are generally made of grey cast iron.Reason (R): Cast iron possesses good self-lubricating properties.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer?.
Assertion (A): Machine tool beds are generally made of grey cast iron.Reason (R): Cast iron possesses good self-lubricating properties.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. 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): Machine tool beds are generally made of grey cast iron.Reason (R): Cast iron possesses good self-lubricating properties.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. 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): Machine tool beds are generally made of grey cast iron.Reason (R): Cast iron possesses good self-lubricating properties.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer?.
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ample number of questions to practice Assertion (A): Machine tool beds are generally made of grey cast iron.Reason (R): Cast iron possesses good self-lubricating properties.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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