AON hewitt technical interview questions

Hello Guys, My AON hewitt technical interview went as follows:

1. Can u make a program to display prime numbers?:

Yes sir

2. Can u make a program to generate Fibonacci series?

Yes sir

3. Can you make a program to display random numbers?

Hmmmmm…sir ill have to think.

Ok, then think and make it

I started working on it…And concluded that sir whatever way we make it we have to choose a sequence that is not easy for human brain to find out. He was really contented that I pointed at the right thing.

  1. He asked abt Computer networks..OSI model, Testing…White box testing, unit testing etc.
  2. Mainly he checked my determination level to join and stick to the company.
  3. Asked 3 puzzles out of which I could solve only 2.

DO not remember them now.

He was overall-Happy and sent me for HR interview.

Induced anisotropy

In case of polycrystalline solids, the various crystals in a polycrystals are randomly oriented, so that properties are same in all directions. However if specific treatment such as cold rolling is given to certain polycrystalline substances, then magnetic properties become different in different directions. This anisotropy produced in the material is called induced anisotropy.

This property is of practical importance.

Example: thin films of Ni-Fe alloy deposited on to a substrate by evaporation in vacuum with magnetic field applied in the plane of the substrate show spontaneous magnetisation in the direction of the applied field. These magnetic films are used as storage devices in computers.

Reference: This article is referred from my book “electrical engineering materials” having ISBN 978-81-272-5069-0

Magnetic Anisotropy

Magnetic anisotropy is that property due to which ferromagnets tend to magnetize along certain crystallographic axes, called directions of easy magnetization.

Example: In certain single crystals such as iron.

The magnetic properties depend upon the direction in which these are measured.

In case of iron, there are six preferred directions of spontaneous magnetisation.

In case of iron

Reference: This article is referred from my book “electrical engineering materials” having ISBN 978-81-272-5069-0