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Doctors Medicines MCQs Q&A

  1. Loose fit
  2. Wringing fit
  3. Side fit
  4. Running fit
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1 Answers

Option 2 : Wringing fit

Explanation:

Fit is a relationship that exists between two mating parts, a hole and a shaft, with respect to their dimensional difference before assembly.

  • Clearance fit: Clearance is the difference between the size of the hole and the size of the shaft which is always positive. Here the tolerance zone of the hole will be above the tolerance zone of the shaft.

          Examples: Slide fit, easy sliding fit, running fit, slack running fit and loose running fit.

[ alt="Fitter 35 25Q Hindi - Final images Q17a" src="//storage.googleapis.com/tb-img/production/18/09/Fitter_35_25Q_Hindi%20-%20Final_images_Q17a.PNG" style="height: 180px; width: 388px;">

  • Interference fit: Interference is the difference between the size of the hole and the size of the shaft which is always negative i.e. shaft is always larger than the hole size. Here, the tolerance zone of the hole will be below the tolerance zone of the shaft.

          Examples: Shrink fit, heavy drive fit and light drive fit.

[ alt="Fitter 35 25Q Hindi - Final images Q17b" src="//storage.googleapis.com/tb-img/production/18/09/Fitter_35_25Q_Hindi%20-%20Final_images_Q17b.PNG">

  • Transition fit: It may sometimes provide clearance and sometimes interference. Here the tolerance zones of the hole and shaft will overlap each other.

          Examples: Tight fit and push fit, wringing fit, press fit.

[ alt="Fitter 35 25Q Hindi - Final images Q17c" src="//storage.googleapis.com/tb-img/production/18/09/Fitter_35_25Q_Hindi%20-%20Final_images_Q17c.PNG">

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