L&T Construction Graduate Engineer Trainee (Get) Interview Questions, Process, and Tips

Types of faults in transmission lines

• Short circuit fault

• Open circuit fault

• Ground fault

• Transient fault

• Intermittent fault

Various types of protection used in generators, transformers, and grounding.

• Generator protection includes overcurrent, differential, and reverse power protection.

• Transformer protection includes overcurrent, differential, and Buchholz protection.

• Grounding protection includes earth fault protection and lightning protection.

• Other types of protection include overvoltage, underfrequency, and thermal protection.

• Each type of ...read more

There are two types of distribution systems: radial and network.

• Radial distribution system is a simple and common system where power flows in one direction from the source to the load.

• Network distribution system is a complex system where power flows in multiple directions through interconnected feeders and transformers.

• Radial system is suitable for areas with low power demand and less number of consumers.

• Network system...read more

I have experience in rating generators and transformers from my internship at NALCO Captive Power Plant.

• During my internship, I learned how to rate generators and transformers based on their capacity and efficiency.

• I gained hands-on experience in using instruments to measure the performance of generators and transformers.

• I also learned about the importance of regular maintenance and testing to ensure optimal performanc...read more

Shaper is used for shaping flat surfaces while Planner is used for planning flat and angular surfaces.

• Shaper is a reciprocating type of machine tool while Planner is a stationary type of machine tool.

• Shaper is used for producing flat surfaces while Planner is used for producing flat and angular surfaces.

• Shaper uses a single point cutting tool while Planner uses a multiple point cutting tool.

• Examples of shaper include s...read more

Runner and riser are used in casting to ensure proper flow of molten metal and prevent defects.

• Runners are channels that connect the sprue to the mold cavity, allowing molten metal to flow into the mold.

• Risers are reservoirs of molten metal that compensate for shrinkage during solidification and prevent porosity and other defects.

• Proper design and placement of runners and risers is crucial for successful casting.

• Exampl...read more

Spur gears are used to transmit power between parallel shafts. They have straight teeth and are commonly found in machinery.

• Spur gears are one of the simplest and most common types of gears.

• They are used in a wide range of applications, from small toys to large industrial machinery.

• Spur gears are designed to transmit power between parallel shafts.

• They have straight teeth that are cut parallel to the axis of rotation.

• Sp...read more

Green sand is called so because it contains moisture and clay, which gives it a greenish tint.

• Green sand contains moisture and clay

• The clay helps the sand hold its shape during casting

• The moisture helps the sand stick together

• The greenish tint is due to the presence of iron oxide

• Green sand is commonly used in foundries for casting metals

The indenter in Brinell hardness test is a hardened steel ball and the material name is tungsten carbide.

• Brinell hardness test measures the indentation hardness of a material

• The indenter is pressed into the material with a known force

• The diameter of the indentation is measured and used to calculate the Brinell hardness number

• The indenter used is a hardened steel ball with a diameter of 10mm

• The material name of the inde...read more

Bearing is a machine element that supports a rotating shaft and reduces friction between moving parts.

• There are two main types of bearings: plain bearings and rolling bearings.

• Plain bearings are also known as sleeve bearings and consist of a shaft rotating inside a stationary sleeve.

• Rolling bearings use balls or rollers to reduce friction and support the shaft.

• Other types of bearings include thrust bearings, magnetic b...read more