Raath International School Interview Questions and Answers

Boilers in industries are used to generate steam for various processes such as heating, power generation, and sanitation.

• Boilers are used to generate steam by heating water, which can then be used for heating buildings, powering machinery, and sterilizing equipment.

• They are essential in industries such as power plants, chemical processing plants, food processing plants, and hospitals.

• Boilers play a crucial role in maintaining temperature control, providing hot water, and driv...read more

Water treatment plants work by removing contaminants from water to make it safe for consumption.

• Water treatment plants use processes like coagulation, sedimentation, filtration, and disinfection to remove contaminants.

• Coagulation involves adding chemicals to water to make particles clump together and settle out.

• Sedimentation allows the larger particles to settle at the bottom of the water.

• Filtration involves passing water through layers of sand, gravel, and charcoal to remove...read more

I am skilled in various fields such as electrical, plumbing, HVAC, and carpentry.

• Skilled in electrical work

• Experienced in plumbing repairs

• Knowledgeable in HVAC systems

• Proficient in carpentry tasks

Types of bearings include ball bearings, roller bearings, plain bearings, and fluid bearings.

• Ball bearings: use balls to reduce friction between two surfaces (e.g. deep groove ball bearings)

• Roller bearings: use cylindrical rollers to reduce friction (e.g. tapered roller bearings)

• Plain bearings: have a simple surface for sliding motion (e.g. sleeve bearings)

• Fluid bearings: use a fluid film to reduce friction (e.g. hydrodynamic bearings)

HVAC system stands for Heating, Ventilation, and Air Conditioning. It is responsible for regulating temperature, humidity, and air quality in a building.

• HVAC systems control indoor climate by heating or cooling air as needed.

• They also regulate humidity levels to ensure comfort and prevent mold growth.

• Air is circulated through ductwork and distributed to different areas of the building.

• Common components include furnaces, air conditioners, heat pumps, and ventilation systems.

• Re...read more

Types of gears include spur gears, helical gears, bevel gears, worm gears, and rack and pinion gears.

• Spur gears have straight teeth and are the most common type of gear.

• Helical gears have angled teeth for smoother and quieter operation.

• Bevel gears have cone-shaped teeth and are used to change the direction of rotation.

• Worm gears have a screw-like appearance and provide high gear reduction ratios.

• Rack and pinion gears convert rotational motion into linear motion.