Balmer Lawrie
360 Digital Idea Interview Questions and Answers
Q1. 1- Which type of Piston ring fitted on piston? State each piston rings purpose
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
Q2. 2- In air compressor why used intercooler and after cooler?
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
Q3. Draw the front view of M-16 bolt with 80mm height.
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
Q4. What is stuffing box? Why where it use?
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.
Q5. Draw any one pistons side view without dimensions.
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
Q6. 3- what is fixture?
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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