Vaaman Engineers Mechanical Engineer Interview Questions and Answers

Specification of machinery refers to the detailed requirements and characteristics of a machine or equipment.

• Includes dimensions, materials, performance criteria, and safety features

• Should be clearly defined to ensure proper design and functionality

• Examples: maximum load capacity, operating temperature range, power consumption

Site management involves coordinating and overseeing all activities on a construction site to ensure projects are completed on time and within budget.

• Developing a detailed project plan outlining tasks, timelines, and resources

• Coordinating with subcontractors, suppliers, and other stakeholders

• Ensuring compliance with safety regulations and quality standards

• Managing project budget and expenses

• Monitoring progress and addr...read more

Pipe joining can be done using various methods such as welding, soldering, or using mechanical fittings.

• Welding: involves melting the edges of the pipes and joining them together.

• Soldering: uses a filler material to join the pipes together.

• Mechanical fittings: includes couplings, unions, and compression fittings to connect pipes without welding or soldering.

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

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