Molecular theory of magnetism

The molecular theory of magnetism was given by Weber and modified by Ewing. According to this theory: Continue reading “Molecular theory of magnetism”

Nagarro interview

Dear friends,

As you are preparing for the placement in a reputed company like Nagarro then Let us discuss overview of Nagarro as it may be beneficial for you in the Nagarro interview.

Nagarro was founded in 1996. In a very short span, the company has made a significant name in its field. Continue reading “Nagarro interview”

Infosys overview and sample interview questions

Dear friends,

If you are preparing for placement for reputed company like Infosys, then following information may be useful for you:

Name: Infosys (It was started in 1981)

Tagline: Building tomorrow’s enterprise

Services: Infosys provides services in span business and technology consulting, application services, systems integration, product engineering, custom software development, maintenance, re-engineering, independent testing and validation services, IT infrastructure services and business process outsourcing.

Infosys has 65 offices and 59 development centers in India, China, Australia, the Czech Republic, Poland, the UK, Canada and Japan. Infosys and its subsidiaries have 127,779 employees as on December 31, 2010.


Probable or sample technical interview questions:

Questions on C

1. What is the difference between printf ( ) and scanf ( )?

2. What is the difference between getchar ( ) and getchare ( )?

3. Differentiate between “iostream.h” and <iostream.h>.

4. What is the difference between scanf ( ) and gets ( )?

5. Can a C program be written without main ( )?

Questions on C++

1. What is polymorphism?

2. What is inheritance?

3. What is virtual function?

4. What is binding?

5. What is friend function?

Questions on Java

1. What is type casting?

2. What is a thread?

3. What is socket programming?

4. What is the difference between application and applet?

5. What is RMI and servlet?

Questions on software engineering

1. What is testing? What are its types?

2. What is SDLC? What are different phases of SDLC?

3. What are the different types of models? Which model is best and why?

4. What is test case and test suite?

5. What is software engineering?

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Dear friends, you must have seen the some strange lengthy number written as ISSN in a journal or periodical. Do you know its significance? Let us discuss:

ISSN is an abbreviation of “International Standard Serial Number”. Any publication that does not have a defined end like periodicals, journals or newspaper can be assigned an ISSN. It consists of 8 digits.


Dear friends, you must have seen the some strange lengthy number written as ISBN most probably at the back cover of a book. Do you know its significance? Let us discuss:

ISBN is an abbreviation of “International Standard Book Number”. ISBNs used to be of  10 digits in length up to the end of December 2006, but since January 1st, 2007 they have consisted of 13 digits. Continue reading “ISBN”

Magnetic Materials

Magnetic materials are those materials that can be either attracted or repelled when placed in an external magnetic field and can be magnetized themselves.

Examples: iron or its alloys which are used in various electrical appliances like generators, televisions, cassette recorders, magnetic core computer memories etc. to increase the magnetic flux without increasing the current.

The magnetic properties of a material depend whether it has permanent dipole moment or not, if yes then question arises, how these dipoles are oriented with respect to each other ? On the basis of orientation, the magnetic materials are classified into five categories (a) Diamagnetic   (b) Paramagnetic   (c) Ferromagnetic   (d) Anti – ferromagnetic and   (e) Ferrimagnetic.

Note: This article is referred from my book “Electrical Engineering Materials” having ISBN 978-81-272-5069-0