Ferrites are a sub-group of

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Answer :

Ferrites are a sub-group of ferri-magnetic materials.

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Ferrites are a sub-group of (a) non-magnetic materials (6) ferro-magnetic materials (c) paramagnetic materials (d) ferri-magnetic materials

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Last Answer : (d) ferri-magnetic materials

Transformer cores are normally made from (A) Soft ferrites (B) High purity iron (C) Grain oriented Fe-Si alloy (D) Al-Ni-Co alloy

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The relative permeability is less than unity is case of (a) ferromagnetic materials (b) ferrites (c) non-ferrous materials (d) diamagnetic materials

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Ferrites are materials. (a) paramagnetic (b) diamagnetic (c) ferromagnetic (d) none of the above

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Hard ferrites are used for making (A) Transformer cores. (B) Electrical machinery. (C) High frequency equipment. (D) Light weight permanent magnets.

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A ferrite core has less eddy current loss than an iron core because ferrites have (A) High resistance. (B) Low resistance. (C) Low permeability. (D) High hysteresis.

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Ferrites are (A) ferromagnetic material. (B) ferrimagnetic materials. (C) anti ferromagnetic material. (D) diamagnetic materials.

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Ferrites are types of

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Ferromagnets

Description : Ferromagnets

Last Answer : Ferromagnets Only certain materials, such as iron, cobalt, nickel, and gadolinium, exhibit strong magnetic effects. Such materials are called ferromagnetic, after the Latin word for iron, ... licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

The attraction capacity of electromagnet will increase if the

Last Answer : Atrraction  capacity  will  increase  if  supply  current  is  increased.

Temporary magnets are used in

Last Answer : Temporary magnets are used in loud-speakers,generators, motors.

Main causes of noisy solenoid are

Last Answer : Main causes of noisy solenoid are strong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force, uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts.

Core of an electromagnet should have

Last Answer : Core of an electromagnet should have low coercivity, high susceptibility.

Magnetism of a magnet can be destroyed by

Last Answer : Magnetism of a magnet can be destroyed by heating, hammering, by inductive action of another magnet.

The magnetic materials exhibit the property of magnetisation because of

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The bar magnet has

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The stray line of magnetic flux is defined as

Last Answer : The stray line of magnetic flux is defined as a line of magnetic flux which does not follow the designed path.

How does the magnetic compass needle behave in a magnetic field ?

Last Answer : It assures a position which follows a line of magnetic flux

The initial permeability of an iron rod is

Last Answer : The initial permeability of an iron rod is the permeability almost in non-magnetised state.

The magnetic reluctance of a material

Last Answer : The magnetic reluctance of a material decreases with increasing cross-sectional area of the material.

The magneto-motive force is

Last Answer : The magneto-motive force is the sum of all currents embraced by one line of magnetic field.

The uniform magnetic field is

Last Answer : The uniform magnetic field is the field in which all lines of magnetic flux are parallel and equidistant.

Magnetic moment is a

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A keeper is used to

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A rectangular magnet of magnetic moment M is cut into two piece ...

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The retentivity (a property) of material is useful for the construction of

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A permanent magnet

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If a copper disc is rotated rapidly below a freely suspended magnetic...

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The commonly used material for shielding or screening magnetism is

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The most effective and quickest may of making a magnet from soft iron is by

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The Biot-savart’s law is a general modification of

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Unit for quantity of electricity is

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The unit of flux is the same as that of

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A 300 mm long conductor is carrying a current of 10 A and is situated at...

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Two long parallel conductors carry 100 A. If the conductors are separated...

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When two ends of a circular uniform wire are joined to the terminals of a battery, the field at the center of the circle

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When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon

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