Search your Topic HERE....

February 12, 2013

IBPS Technical Officers Study Material for Electrical, Electronics & Communications


sponsored links

Friends, from today onwards we've planned to publish study materials for IBPS Technical Officers. As an initiative we are starting with the basics of Electrical / Electronics / Electronics and Communication. We will try to cover all the basic important topics of these three sections. In this post we shall discuss about Materials (what we mean to say is Materials and Components) of Electrical Engineering. An important topic for aspirants from both Electronics and Electronics & Communications backgrounds.

Materials can be classified into 3 types. Those are
  1. Metals
  2. Non-Metals
  3. Materials due to combination
Again these are subdivided into various types. Please have a look at the below diagram for detailed analysis.

Classification of Materials

Metals : Metals are elemental substances capable of changing their shape permanently. Metals are good conductor of heat and electricity. Wrought iron passes lowest percentage of carbon while ore have highest.

Non-ferrous Metals : Non-ferrous metals do not contain Fe and C as their constituents. Examples are AI, Cu, Ag, nickel, Zn, tin, chromium etc. Al, Cu, Ag and Au are good conductors of electricity; Ag is most malleable, Au is most ductile and chromium is corrosion resistant. Zinc is used in the metal plating, tin is used to making bushes, and nickel imparts strength and creep resistance.

Ceramics : Ceramics are generally metallic or non-metallic oxides. Physically separable and chemically homogeneous constituents of materials consisting different phases are also ceramics
  • However, unlike metals ceramics do not have large number of free electrons.
  • Crystal structure of ceramics contain atoms of different sizes. 
  • Ceramic possess high electrical resistances.
  • Examples of ceramic are Sillica, MgO, CdS, ZnO, SiC, BaTiO3, cement ferrites, garnets etc.
  • Rocks, glasses, fireclay sillicates, cements and limes are ceramics
Organic Polymers : Organic polymers are relatively inert and light, and generally have high degree of plasticity
  • Organic Polymers are extensively uses as insulating materials.
  • Examples of organic polymers are PVC, PTEE, polythene, polystyrene, terylene, nylon, cotton, natural and synthetic rubber etc.
Alloy : Alloy is combination of two or more metals. An Alloy is prepared for a specific purpose to meet the particular requirement of an application.

Various group of materials with examples and uses are given below :

Group of Materials
Ferrous Metals
Iron and Steel
Structures of electrical machines, tools
Non-ferrous metals
Cu, AL, Si, Sb, Co
Conductors, Semiconductors
Ferrous Alloys
Invar, Stainless Steel, Alnico
Precision measuring instruments, magnets
Non-ferrous alloys
Phosphor bronze, brass, duralumin, babbits
Bushes of bearings, springs, safety devices
ZrO2, SiO2, B2O3, Na2O, Al2O3, glasses
Refractories, furnace linings, lens, insulators
Organic polymers
Polyethylene, nylon, epoxy, polystyrene uses, insulators
Domestic electrical articles, bio-medical
Metal-ceramic particulate composites
Cement (ceramic + metal)
Space going vehicles, rockets, missiles
Fibrous polymeric composites
Polymer reinforced with the fibres of glass, carbon, boron, graphite, Kevlar
Bodies of computer and radar, satellite and antenna components , aircraft parts, robotic items
Metal-metal composites
Aluminum conductor steel reinforced (ACSR)
Conductors in high voltage transmission and distribution
Thats all for now friends... In our next post we shall discuss aobut more materials Conductors, Super Conductors and chemical bonding etc..

You can read more materials of IBPS Specialist Officers Here


  1. sir plz upload some study meterial of Rajbhasha Adhikari.

  2. Thank you so much for this material Admin. Have been waiting since the notification... Thanks for your gr8 effort. If you dont mind please add more materials on Signals & Systems, Analog and Digital Circuits

  3. Plz upload the syllabus of EEE for ibps Specialist officer exam

  4. thank u so much.. hats off for ur effort

  5. thank u so much...GR8 team.

  6. can u pls tell me some book for ECE SO level.

    1. They are just asking basics friend. So a basic review of your class books is more than enough.

  7. Please upload ECE syallabus

  8. sir please send me SO ECE SYLLABUS

  9. am i eligible for the ibps it scale 1?? i am a EEE 2013 passout


Related Posts Plugin for WordPress, Blogger...