Limits, fits and tolerances viva questions

Limits, fits and tolerances viva questions 

  • What is a limit in limits, fits, and tolerances?
  • What is the purpose of using limits, fits, and tolerances in manufacturing?
  • What is meant by the term “fit” in limits, fits, and tolerances?
  • How do you determine the appropriate fit for a specific application?
  • What is the difference between clearance fit and interference fit?
  • Can you give an example of a practical application where a clearance fit is used?
  • Can you give an example of a practical application where an interference fit is used?
  • What is meant by the term “tolerance” in limits, fits, and tolerances?
  • How are tolerances determined for a specific application?
  • What are the common methods of measuring tolerances?
  • What are the advantages of using limits, fits, and tolerances in manufacturing?
  • What are the disadvantages of using limits, fits, and tolerances in manufacturing?
  • How can the use of limits, fits, and tolerances affect the quality of a product?
  • What are some of the challenges faced in implementing limits, fits, and tolerances in manufacturing processes?
  • How can the use of computer-aided design (CAD) and computer-aided manufacturing (CAM) software help in implementing limits, fits, and tolerances in manufacturing processes?
  • What are the different types of fits and their classifications?
  • What is meant by the term “deviation” in limits, fits, and tolerances?
  • What is the relationship between tolerances and deviations?
  • Can you explain the concept of basic size in limits, fits, and tolerances?
  • What is meant by the term “allowance” in limits, fits, and tolerances?
  • How are allowances determined for a specific fit?
  • What is meant by the term “shaft” in limits, fits, and tolerances?
  • What is meant by the term “hole” in limits, fits, and tolerances?
  • How are the tolerances and fits for shafts and holes determined?
  • Can you explain the difference between unilateral and bilateral tolerances?
  • What is meant by the term “maximum material condition” (MMC) in limits, fits, and tolerances?
  • What is meant by the term “least material condition” (LMC) in limits, fits, and tolerances?
  • How do you calculate the minimum and maximum limits for a given tolerance?
  • Can you explain the concept of “stacked tolerances” and how they can affect the final product?
  • What are the factors that affect the selection of a fit for a specific application?
  • How can the use of standard tolerance tables help in selecting the appropriate fit for a given application?
  • Can you explain the difference between a running fit and a sliding fit?
  • What are the factors that affect the performance of a running fit or a sliding fit?
  • How do you determine the appropriate interference fit for a specific application?
  • What is meant by the term “press fit” and how is it used in manufacturing?
  • What is meant by the term “force fit” and how is it used in manufacturing?
  • Can you explain the difference between a transition fit and an interference fit?
  • What is meant by the term “tolerance grade” in limits, fits, and tolerances?
  • What are the common tolerance grades used in manufacturing?
  • How do you select the appropriate tolerance grade for a specific application?
  • Can you explain the concept of “virtual condition” in limits, fits, and tolerances?
  • What is meant by the term “datum” in limits, fits, and tolerances?
  • How are datums used in manufacturing processes?
  • Can you explain the difference between a clearance hole and a tapped hole?
  • What is meant by the term “threaded fastener” in limits, fits, and tolerances?
  • How are the tolerances for threaded fasteners determined?
  • Can you explain the difference between a coarse thread and a fine thread?
  • How do you determine the appropriate thread fit for a specific application?
  • What are the common thread standards used in manufacturing?
  • How can the use of statistical process control (SPC) help in ensuring the quality of a product during the manufacturing process?
  • Can you explain the difference between statistical tolerance and functional tolerance?
  • What is meant by the term “datum feature” in limits, fits, and tolerances?
  • Can you explain the concept of “geometric tolerance” in limits, fits, and tolerances?
  • What are the different types of geometric tolerances?
  • How are geometric tolerances specified in manufacturing drawings?
  • Can you explain the difference between a surface finish tolerance and a dimensional tolerance?
  • What are the common methods used to measure surface finish?
  • Can you explain the difference between a roughness average (Ra) and a roughness height (Rz)?
  • Can you explain the difference between a limit gauge and a functional gauge?
  • What is meant by the term “go gauge” and “no-go gauge”?
  • How are gauges used in manufacturing processes?
  • What are the advantages of using gauges in manufacturing processes?
  • What are the disadvantages of using gauges in manufacturing processes?
  • How can the use of computer-aided inspection (CAI) help in ensuring the quality of a product during the manufacturing process?
  • Can you explain the difference between a linear tolerance and a angular tolerance?
  • How are linear and angular tolerances specified in manufacturing drawings?
  • What is meant by the term “datum plane” in limits, fits, and tolerances?
  • Can you explain the difference between a unilateral and bilateral angular tolerance?
  • What is meant by the term “parallelism” in limits, fits, and tolerances?
  • Can you explain the difference between a parallelism tolerance and a perpendicularity tolerance?
  • How are parallelism and perpendicularity tolerances specified in manufacturing drawings?
  • What is meant by the term “cylindricity” in limits, fits, and tolerances?
  • Can you explain the difference between a concentricity tolerance and a coaxiality tolerance?
  • How are concentricity and coaxiality tolerances specified in manufacturing drawings?
  • Can you explain the difference between a flatness tolerance and a straightness tolerance?
  • What is meant by the term “runout” in limits, fits, and tolerances?
  • How is runout tolerance specified in manufacturing drawings?
  • What is meant by the term “position” in limits, fits, and tolerances?
  • How is position tolerance specified in manufacturing drawings?
  • What is meant by the term “total runout” in limits, fits, and tolerances?
  • Can you explain the difference between a circular runout and a total runout?
  • How are circular runout and total runout tolerances specified in manufacturing drawings?
  • Can you explain the difference between a form tolerance and a profile tolerance?
  • How are form and profile tolerances specified in manufacturing drawings?
  • Can you explain the difference between a roughness tolerance and a waviness tolerance?
  • How are roughness and waviness tolerances specified in manufacturing drawings?
  • What is meant by the term “tolerance zone” in limits, fits, and tolerances?
  • How is the tolerance zone specified in manufacturing drawings?
  • What are the common types of materials used in manufacturing and how do they affect the selection of tolerances and fits?
  • Can you explain the difference between a material’s ductility and hardness and how they affect tolerances and fits?
  • What is meant by the term “wear allowance” in limits, fits, and tolerances?
  • How is wear allowance determined for a specific application?
  • Can you explain the difference between a fit for assembly and a fit for function?
  • How are fits for assembly and fits for function specified in manufacturing drawings?
  • Can you explain the difference between a selective assembly and a non-selective assembly?
  • What is meant by the term “interference fit interference fit” in limits, fits, and tolerances?
  • How are interference fit tolerances determined for a specific application?
  • What is meant by the term “clearance fit allowance” in limits, fits, and tolerances?
  • How is clearance fit allowance determined for a specific application?
 

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