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Which one of the following is the value for the tolerance grade IT-8?
- a)10 i
- b)16 i
- c)25 i
- d)40 i
Correct answer is option 'C'. Can you explain this answer?
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Which one of the following is the value for the tolerance grade IT-8?a...
Understanding Tolerance Grades
Tolerance grades, often expressed as IT grades, are fundamental in mechanical engineering. They define the acceptable limits of variation in dimensions for manufactured parts. The IT system ranges from IT-0 (very precise) to IT-18 (less precise), with IT-8 being a commonly used grade.
Value of Tolerance Grade IT-8
- The IT-8 tolerance grade corresponds to a specific range of permissible deviations from the nominal dimension.
- According to ISO standards, IT-8 is defined with a value of 25 i, where "i" represents the unit of measurement in millimeters.
Breaking Down the Options
- Option a: 10 i - This value falls under IT-7, which is more precise than IT-8.
- Option b: 16 i - This value corresponds to IT-8 but is not the standard defined range.
- Option c: 25 i - This is the correct answer, as it accurately represents the tolerance for IT-8.
- Option d: 40 i - This value pertains to a less precise tolerance grade, likely IT-9.
Conclusion
In mechanical design and manufacturing, adhering to the correct tolerance grade is crucial for ensuring parts fit together and function as intended. Therefore, the correct value for tolerance grade IT-8 is indeed 25 i, making option 'C' the right choice. Understanding these grades helps engineers maintain quality and precision in their work.
Tolerance grades, often expressed as IT grades, are fundamental in mechanical engineering. They define the acceptable limits of variation in dimensions for manufactured parts. The IT system ranges from IT-0 (very precise) to IT-18 (less precise), with IT-8 being a commonly used grade.
Value of Tolerance Grade IT-8
- The IT-8 tolerance grade corresponds to a specific range of permissible deviations from the nominal dimension.
- According to ISO standards, IT-8 is defined with a value of 25 i, where "i" represents the unit of measurement in millimeters.
Breaking Down the Options
- Option a: 10 i - This value falls under IT-7, which is more precise than IT-8.
- Option b: 16 i - This value corresponds to IT-8 but is not the standard defined range.
- Option c: 25 i - This is the correct answer, as it accurately represents the tolerance for IT-8.
- Option d: 40 i - This value pertains to a less precise tolerance grade, likely IT-9.
Conclusion
In mechanical design and manufacturing, adhering to the correct tolerance grade is crucial for ensuring parts fit together and function as intended. Therefore, the correct value for tolerance grade IT-8 is indeed 25 i, making option 'C' the right choice. Understanding these grades helps engineers maintain quality and precision in their work.
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