L&T Technology Services Engineer Interview Questions and Answers

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 cylinder with the same mass and radius.

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

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.

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 reactions.

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 strength of a material.

• Examples include calculating the maximum str...read more