Author: eees.in

Electrical properties of Conducting Materials

Briefly describe the Electrical properties of Conducting Materials? Resistivity:  It is the measure of the resistance offered by a material having unit length and cross section area to electric conduction.      A good conducting...

Magnetomotive Force

Magnetomotive Force (mmf) : Magnetomotive Force is the product of current and number of turns. More current and more turns leads to greater magnetizing effect. Unit of mmf is ampere turns. mmf = NI...

Magnetic flux and Magnetic flux density

General Terms associated with Magnetism: Magnetic field: The space around a magnet in which a magnetic pole experience a force is called Magnetic field. Magnetic lines of force: Magnetic field around a magnet is...

Permalloy and Perminvar

Permalloy, Perminvar and Mumetal Permalloy : It is a soft magnetic material, it is an alloy of Iron and Nickel.( Iron=78.5% and Ni = 21% ), which can be magnetized by a very weak...

Magnetostriction

Magnetostriction : When ferromagnetic materials are magnetized, there are small changes in its dimensions. The phenomenon is called Magnetostriction. When subjected to rapidly alternating magnetic fields there is a rapid and continuus  extention and...

Curie Point

Curie Point / Curie Temperature There is a critical Temperature called Curie Point, above which the ferro magnetic material lose their magnetic property and to become a paramagnetic material. The curie temperature is named...

DC Series Motor Starter

TWO POINT STARTER It is used for DC Series Motor for the protection from High starting current based on resistance star method. Limit the starting current by adding resistance in series with the field...

VSSC Technician B-2021 Answer key

Questions with answer of the written exam Electrical Technician-B conducted on 14/07/2021 . Related Previous ISRO Technician B questions, click below Quiz : ISRO Technician B -Electrical/2015 Quiz : ISRO Technician B -Electrical/2019 Quiz...

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