Larsen & Toubro Limited Mechanical Engg. Design Interview Questions and Answers

Fire NOC conditions refer to the requirements set by the fire department for ensuring fire safety in a building or establishment.

• Fire NOC is required before starting any construction or occupancy of a building.

• The building must comply with fire safety regulations such as having fire extinguishers, smoke detectors, and fire alarms installed.

• Regular fire drills and training for occupants are necessary to ensure preparedn...read more

25 KV AC is more efficient for railways due to lower energy losses over long distances.

• 25 KV AC is more efficient for long distance transmission as it experiences lower energy losses compared to 750V DC.

• 25 KV AC allows for higher speeds and heavier loads on the railway system.

• 25 KV AC is the standard voltage used in many modern railway systems around the world, such as in Europe and parts of Asia.

• 750V DC may be more su...read more

Reverse a string without using string or inbuilt function

• Create an array of characters to store the string

• Use two pointers, one at the beginning and one at the end, swap characters until they meet

• Repeat until all characters are swapped

Gpm for water supply pump can be calculated by dividing the flow rate in gallons by the time in minutes.

• Calculate the flow rate in gallons per minute (GPM)

• Determine the time in minutes over which the flow rate is measured

• Divide the flow rate by the time to get the GPM value

Heat exchangers are devices used to transfer heat between two or more fluids, ensuring efficient heat transfer and temperature control.

• Transfer heat between fluids

• Maintain temperature control

• Increase energy efficiency

• Commonly used in HVAC systems, refrigeration units, and chemical processing plants

A lathe is a machine tool that rotates a workpiece about an axis of rotation to perform various operations such as cutting, sanding, drilling, knurling, or deformation.

• Lathe is used to shape and cut materials such as wood, metal, and plastic.

• It rotates the workpiece on its axis and a cutting tool is applied to the workpiece to remove material.

• Lathe can perform various operations such as turning, facing, drilling, borin...read more

Boiler drum is a cylindrical container which is used to store water and steam produced in a boiler.

• It is a vital component of a boiler system.

• It is usually made of steel and is located at the top of the boiler.

• It acts as a reservoir of water/steam and helps to separate steam from water.

• It also helps to regulate the pressure and temperature of the steam.

• The level of water in the drum is maintained by a feedwater control...read more