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GATE Past Year Questions: Limits, Fits & Tolerances | Manufacturing Engineering - Mechanical Engineering PDF Download

Question for GATE Past Year Questions: Limits, Fits & Tolerances
Try yourself:In an interchangeable assembly, shafts of size GATE Past Year Questions: Limits, Fits & Tolerances | Manufacturing Engineering - Mechanical Engineeringmm mate with holes of size GATE Past Year Questions: Limits, Fits & Tolerances | Manufacturing Engineering - Mechanical Engineeringmm. The maximum possible clearance in the assembly will be

[ME 2004]

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Question for GATE Past Year Questions: Limits, Fits & Tolerances
Try yourself:The dimensional limits on a shaft of 25h7are

[ME 2003]

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Question for GATE Past Year Questions: Limits, Fits & Tolerances
Try yourself:Allowance in limits and fits refers to

[ME 2001]

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Question for GATE Past Year Questions: Limits, Fits & Tolerances
Try yourself:The fit on a hole-shaft pair system is specified as H7-h6, the type of fit is

[ME 1996]

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Question for GATE Past Year Questions: Limits, Fits & Tolerances
Try yourself:A shaft of diameter GATE Past Year Questions: Limits, Fits & Tolerances | Manufacturing Engineering - Mechanical Engineering mm and a hole of diameter GATE Past Year Questions: Limits, Fits & Tolerances | Manufacturing Engineering - Mechanical Engineering mm when assembled would yield

[ME 1993]

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Question for GATE Past Year Questions: Limits, Fits & Tolerances
Try yourself:Two shafts A and B have their diameters specified as 100 ± 0.1 mm and 0.1 ± 0.0001 mm respectively. Which of the following statements is/are true

[ME 1992]

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Question for GATE Past Year Questions: Limits, Fits & Tolerances
Try yourself:A bush was turned after mounting the same on a mandrel. The mandrel diameter in millimeters is GATE Past Year Questions: Limits, Fits & Tolerances | Manufacturing Engineering - Mechanical Engineering  and bore diameter of bush is GATE Past Year Questions: Limits, Fits & Tolerances | Manufacturing Engineering - Mechanical Engineering The maximum eccentricity of the bush in mm will be

[ME 1991]

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Question for GATE Past Year Questions: Limits, Fits & Tolerances
Try yourself:In an engineering drawing one finds the designation of 20G7f8, the position of tolerance of the hole is indicated by

[ME 1988]

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Question for GATE Past Year Questions: Limits, Fits & Tolerances
Try yourself:The hole GATE Past Year Questions: Limits, Fits & Tolerances | Manufacturing Engineering - Mechanical Engineering and shaft, GATE Past Year Questions: Limits, Fits & Tolerances | Manufacturing Engineering - Mechanical Engineering when assembled will result in

[ME 1987]

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FAQs on GATE Past Year Questions: Limits, Fits & Tolerances - Manufacturing Engineering - Mechanical Engineering

1. What are limits, fits, and tolerances in mechanical engineering?
Ans. Limits, fits, and tolerances are important concepts in mechanical engineering that ensure the proper functioning and interchangeability of manufactured components. Limits define the maximum and minimum dimensions within which a part must fall, fits specify the degree of tightness or looseness between mating parts, and tolerances determine the allowable variation in dimensions.
2. How are limits and fits classified in mechanical engineering?
Ans. Limits and fits are classified using a standardized system called the International Tolerance (IT) grades. The IT grades range from IT01 to IT18, with IT01 representing the tightest fit and IT18 representing the loosest fit. Each IT grade corresponds to a specific tolerance zone that determines the allowable variation in dimensions for a given fit.
3. What is the significance of tolerances in mechanical engineering?
Ans. Tolerances are crucial in mechanical engineering as they ensure the proper functioning and interchangeability of components. They specify the allowable variation in dimensions during the manufacturing process. Tighter tolerances result in higher precision but also increase manufacturing costs, whereas looser tolerances allow for easier manufacturing but may compromise the functionality of the final product.
4. How are limits and fits determined in mechanical engineering?
Ans. Limits and fits are determined based on the intended function of the components and the level of precision required. The selection of limits and fits involves considering factors such as the type of motion, the desired clearance or interference between mating parts, and the material properties. Engineering standards, such as ISO 286, provide guidelines and tables that assist in selecting appropriate limits and fits for different applications.
5. What are some common types of fits used in mechanical engineering?
Ans. Some common types of fits used in mechanical engineering include clearance fit, interference fit, and transition fit. A clearance fit allows for a gap between mating parts, an interference fit creates a tight connection between parts, and a transition fit provides a combination of clearance and interference. The selection of the fit type depends on the specific application requirements and the desired level of tightness or looseness between mating parts.
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