L&T Technology Services Engineer Interview Questions and Answers

Program to sort an array of strings in alphabetical order.

• Use a sorting algorithm like bubble sort, selection sort, or merge sort.

• Iterate through the array comparing adjacent elements and swapping if necessary.

• Ensure the array is sorted in ascending order.

Date & time manipulation in JavaScript

• Use the Date object to work with dates and times in JavaScript

• Get the current date and time using new Date()

• Format dates using methods like toLocaleString() or toISOString()

• Perform calculations with dates using methods like getTime() and setDate()

The moment of inertia for a circular cross sectional part depends on its radius and mass distribution.

• The moment of inertia is a measure of an object's resistance to rotational motion.

• For a circular cross section, the moment of inertia is given by (π/4) x r^4, where r is the radius.

• The mass distribution of the part also affects the moment of inertia.

• A solid cylinder has a higher moment of inertia than a hollow cyl...read more

Bending moment and shear force diagrams illustrate internal forces in beams under loads, crucial for structural analysis.

• Bending Moment Diagram (BMD) shows how bending moments vary along a beam.

• Shear Force Diagram (SFD) illustrates how shear forces change along the length of a beam.

• BMD is typically plotted above the beam, while SFD is plotted below.

• For a simply supported beam with a central load, the BMD is parabo...read more

Strength of materials refers to the study of the behavior of solid objects under various types of forces.

• Strength of materials involves analyzing how materials deform and break under different loads.

• It is important in engineering to ensure that materials used in structures can withstand the expected forces.

• Factors such as material properties, geometry, and loading conditions all play a role in determining the stre...read more

Fe has higher yield strength and ultimate strength than Al, but Al has higher ductility.

• Fe has a steeper slope in the elastic region than Al

• Al has a longer plastic region than Fe

• Fe has a higher yield strength and ultimate strength than Al

• Al has higher ductility than Fe

• Fe undergoes more brittle fracture than Al

Laws governing energy transfer and transformation in physical systems.

• First law: Energy cannot be created or destroyed, only transferred or transformed.

• Second law: Entropy of a closed system always increases over time.

• Third law: Absolute zero cannot be reached through a finite number of steps.

• Applications in engineering, physics, and chemistry.

• Examples include refrigeration, power generation, and chemical reaction...read more