Basic Science of Tsunami- let us pray for the people of Japan

Dear friends,

We all know that Japan has faced a natural disaster earthquake. Due to this, tsunami happened. There are instances when science can do nothing in front of nature. Today, we will discuss about the basics of tsunami:

Origin of the term tsunami: It is originated from Japanese words “tsu-meaning harbor” and “nami-meaning wave”. Continue reading “Basic Science of Tsunami- let us pray for the people of Japan”

Magnetic flux density

Magnetic flux density is also known as magnetic induction.

When a magnetic material is placed in an external magnetic field then material gets magnetized. Such magnetism produced in the material is called induced magnetism and the phenomenon is called is called magnetic induction

It is also defined as the number of magnetic lines of force inside a magnetized material crossing unit area normal to their direction.

Its S.I. units are weber per square meter.

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

Magnetic Induction

When a magnetic material is placed in an external magnetic field then material gets magnetized. Such magnetism produced in the material is called induced magnetism and the phenomenon is called is called magnetic induction

It is also defined as the number of magnetic lines of force inside a magnetized material crossing unit area normal to their direction.

It is given by                 B = Φ/A

Its S.I. units are weber per square meter.

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

If you want to purchase winnerscience books, then please see “Winnerscience Books” page on top of website.

Magnetic Flux

The Magnetic flux Φ through any surface held in a magnetic field b is measured by the total number of magnetic lines of force crossing the surface

 

where d S = small area element through which line is passing.

Units

The S.I. unit of magnetic flux is weber (Wb). One weber is the amount of magnetic flux crossing over an area of 1 metre2 held normal to a uniform magnetic field of one tesla.

Thus                           1 weber = 1 tesla x 1 m2

The c.g.s. unit of Φ is maxwell (Mx),

where             1 weber = 108 maxwell

Reference: This article is referred from my authored book “electrical engineering materials”.

Dear friends,

Congratulations for your placement in a reputed company like IBM. Do you want others to be benefited by your interview experience. For example, you can see the interview experience of Goldman Sachs, Hewitt or accenture shared by our users here. You can also share your experiences with others. You can directly post it or email to winnerscience@gmail.com. We will publish it with proper acknowledgment of yours.

Thanks

Magnetic dipole moment

Magnetic dipole moment is defined as the product of pole strength and the distance between the two poles.

Let a → distance between the poles also called magnetic length,

and m → strength of each pole.

Thus, magnetic dipole moment, pm is given as

pm = ma

 pm is vector quantity directed from south to north pole.

S.I units of pm are joule/tesla or ampere metre2.

Magnetic dipole

Magnetic dipole consists of two equal and opposite magnetic poles separated by a small distance.

When it is placed in an external magnetic field, it experiences a torque and dipole sets itself in a particular direction.

Example: A compass needle, a bar magnet, a current carrying loop. An atom of a magnetic material also behaves as a dipole due to electrons revolving around the nucleus.

Reference: This article is referred from my authored book”electrical engineering materials.

CMC limited overview and probable interview questions

Dear friends,

If you are preparing for your placement in a reputed company like CMC limited.Then let us discuss about the overview of the company and probable sample technical questions that can be asked in the interview.

Name: CMC limited. CMC was started on December 26, 1975, as the ‘Computer Maintenance Corporation Private Limited’.

Tagline: Your IT partner

Services: CMC limited provides services in data warehousing, education & training, ERP, Networking, Infrastructure development, software development, systems & hardware, system integration. CMC limited provides these services to industries like banking, retail, education, givernment, insurance, shipping and transportation.

Address: Corporate office:

PTI Building, 5th Floor
4 Sansad Marg
New Delhi 110 001
India
Tel: +91-11-2373 6151
Fax: +91-11-2373 6159

Website: www.cmcltd.com

Probable technical questions:

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?

OOAD questions

1. What is the meaning of analysis and design?

2. What are the steps involved in designing?

3. What are the main underlying concepts of object orientation?

4. Describe “SBI” of an object?

5. Differentiate persistent & non-persistent objects?

DBMS questions

1. What is data structure?

2. Tell the  areas in which data structures are applied extensively?

3. What are the major data structures used in the following areas : RDBMS, Network data model?

4. If you are using C language to implement the heterogeneous linked list, what pointer type will you use?

5. Minimum number of queues needed to implement the priority queue?

Do you want others to be benefited by your interview experience. For example, you can see the interview experience of Goldman Sachs, Hewitt or accenture shared by our users here. You can also share your experiences with others. You can directly post it or email to winnerscience@gmail.com. We will publish it with proper acknowledgment of yours.

Thanks

NIIT overview and sample interview questions

Dear friends,

If you are preparing for your placement in reputed company like NIIT. Then let us discuss about the brief overview of this company.

Name: NIIT

Foundation: 1981

Tagline: leadership in global talent development

Services: NIIT provides services in sectors like banking, finance, insurance, education, BPO, KPO, corporate training. They also provide IT solutions to schools, colleges and government organisations.

Contact: corporate office

NIIT Limited
85, Sector 32, Institutional
Gurgaon 122001
India
Tel: +91 (124) 4293000
Fax: +91 (124) 4293333

website: www.niit.com

email: india@niit.com

Sample technical questions that can be asked in NIIT interview

DBMS questions:

1. Tell few of the applications that make use of Multilinked Structures?

2. In tree construction which is the suitable efficient data structure?

3. What is the type of the algorithm used in solving the 8 Queens problem?

4. In an AVL tree, at what condition the balancing is to be done?

5. What is the bucket size, when the overlapping and collision occur at same time?

Networking questions:

1. What is EIGRP?

2. Tell us about natting.

3. What is ip address?

4. Tata photon which is attached to laptop, whether it is UDP or TCP connection?

5. What is subnetting?

If you are placed in a reputed company like NIIT. Do you want others to be benefited by your interview experience. For example, you can see the interview experience of Goldman Sachs, Hewitt or accenture shared by our users here. You can also share your experiences with others. You can directly post it or email to winnerscience@gmail.com. We will publish it with proper acknowledgment of yours.

Thanks