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360 Digital Idea Interview Questions and Answers

Updated 5 Feb 2024

Q1. 1- Which type of Piston ring fitted on piston? State each piston rings purpose

Ans.

Piston rings are of three types - compression, oil control, and scraper. Compression rings seal the combustion chamber, oil control rings regulate oil consumption, and scraper rings prevent oil from entering the combustion chamber.

  • Three types of piston rings - compression, oil control, and scraper

  • Compression rings seal the combustion chamber

  • Oil control rings regulate oil consumption

  • Scraper rings prevent oil from entering the combustion chamber

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Q2. 2- In air compressor why used intercooler and after cooler?

Ans.

Intercooler and after cooler are used in air compressor to increase efficiency and reduce temperature.

  • Intercooler cools the compressed air between stages to reduce the temperature and volume of air before it enters the next stage.

  • After cooler cools the compressed air after the final stage to remove moisture and reduce the temperature before it enters the air receiver.

  • Using intercooler and after cooler increases the efficiency of the compressor and reduces the risk of damage t...read more

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Q3. Draw the front view of M-16 bolt with 80mm height.

Ans.

Draw the front view of M-16 bolt with 80mm height.

  • Start by drawing a rectangle with the height of 80mm

  • Divide the rectangle into three parts: the head, the body, and the tail

  • Draw the head with a circular shape and the body with a rectangular shape

  • Add the tail with a triangular shape

  • Include the necessary details such as the locking lugs and extractor grooves

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Q4. What is stuffing box? Why where it use?

Ans.

A stuffing box is a device used to seal a rotating shaft and prevent leakage of fluid or gas.

  • It is commonly used in pumps, compressors, and other rotating equipment.

  • It consists of a gland, packing material, and a compression mechanism.

  • The packing material is compressed against the shaft to create a seal.

  • It requires periodic maintenance to ensure proper functioning.

  • Examples include the stuffing box in a water pump or the stern tube of a ship.

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Q5. Draw any one pistons side view without dimensions.

Ans.

A side view of a piston without dimensions.

  • Draw a cylindrical shape with a flat top and bottom

  • Add a smaller cylindrical shape on top of the flat top

  • Draw a diagonal line from the top of the smaller cylinder to the bottom of the larger cylinder

  • Add a curved line connecting the top of the smaller cylinder to the larger cylinder

  • Draw a small circle in the center of the larger cylinder

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Q6. 3- what is fixture?

Ans.

A fixture is a device used to hold and position a workpiece during manufacturing or assembly.

  • Fixtures are used to ensure consistent and accurate production.

  • They can be custom-made or purchased off-the-shelf.

  • Examples include jigs, clamps, and vices.

  • Fixtures can be used in a variety of industries, including automotive, aerospace, and electronics manufacturing.

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