Magnetising steel is normals difficult because

by

1 Answer

Answer :

Magnetising steel is normals difficult because it has low permeability.

by

Related questions

Magnetising steel is normals difficult because (a) it corrodes easily (6) it has high permeability (c) it has high specific gravity (d) it has low permeability

Description : Magnetising steel is normals difficult because (a) it corrodes easily (6) it has high permeability (c) it has high specific gravity (d) it has low permeability

Last Answer : (d) it has low permeability

The magnetising current of a transformer is usually small because it has?

Last Answer : The magnetising current of a transformer is usually small because it has small air gap.

Find the equation of normals of the following curves at the given points: (i) Curve`y^(2)=4 ax" at point "(at^(2), 2at)`. (ii) Curve `y= e^(x)" at poi

Description : Find the equation of normals of the following curves at the given points: (i) Curve`y^(2)=4 ax" at point "(at^(2), 2at)`. (ii) Curve `y= e^(x)" at poi

Last Answer : Find the equation of normals of the following curves at the given points: (i) Curve`y^(2)=4 ax" at point "(at^( ... (2)-9y^(2) = 432` at point (6, 4).

All the following are examples of chemical change, except (a) Magnetising of iron nails (b) Rusting of iron rods (c) Digestion of food (d) Souring of milk

Description : All the following are examples of chemical change, except (a) Magnetising of iron nails (b) Rusting of iron rods (c) Digestion of food (d) Souring of milk

Last Answer : Ans:(a)

What is the operating point in the Magnetising characteristic of protection CT & measuring CT?

Description : What is the operating point in the Magnetising characteristic of protection CT & measuring CT? 

Last Answer : Protection CT – Operation at ankle point only. Measuring CT – Operation from ankle to knee point 

40 No load test on a transformer is carried out to find A. Copper loss B. magnetising current C. Magnetising current and loss D. Efficiency of the transformer

Description : 40 No load test on a transformer is carried out to find A. Copper loss B. magnetising current C. Magnetising current and loss D. Efficiency of the transformer

Last Answer : C. Magnetising current and loss

22 No load test on a transformer is carried out to find A. copper loss B. magnetising current C. Magnetising current and no load loss d.efficiency of the transformer

Description : 22 No load test on a transformer is carried out to find A. copper loss B. magnetising current C. Magnetising current and no load loss D. Efficiency of the transformer

Last Answer : C. Magnetising current and no load loss

Steel wire is used as?

Last Answer : Steel wire is used as an overhead telephone wire, earth wire, core wire of ACSR.

The magnetic materials exhibit the property of magnetisation because of

Last Answer : The magnetic materials exhibit the property of magnetisation because of spin of nucleus.

Copper, even though costly, finds use in the windings of electrical machines because

Last Answer : Copper, even though costly, finds use in the windings of electrical machines because copper points offer low contact resistance , copper can be easily soldered and welded, copper windings are less bulky and the machines become compact.

Carbon rods are used in wet and dry cells because?

Last Answer : Carbon rods are used in wet and dry cells because carbon rod serves as conductor, carbon can resist the attack of battery acid.

Carbon resistors are used extensively because they are?

Last Answer : Carbon resistors are used extensively because they are easy to make, compact, inexpensive.

The resistivity of a metal is a function of temperature because

Last Answer : The resistivity of a metal is a function of temperature because the amplitude of vibration of the atoms varies with temperature.

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 bar magnet has

Last Answer : The bar magnet has the dipole moment.

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

Last Answer : Magnetic moment is a vector quantity.

A keeper is used to

Last Answer : A keeper is used to provide a closed path for flux.

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

Description : A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be

Last Answer : A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be M/2.

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

Last Answer : The retentivity (a property) of material is useful for the construction of permanent magnets.

A permanent magnet

Last Answer : A permanent magnet attracts some substances and repels others.

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

Description : If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity

Last Answer : If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity less than that of disc and in the same direction.

The commonly used material for shielding or screening magnetism is

Last Answer : The commonly used material for shielding or screening magnetism is soft iron.

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

Last Answer : The most effective and quickest may of making a magnet from soft iron is by placing it inside a coil carrying current.

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

Last Answer : The Biot-savart’s law is a general modification of Ampere’s law.

Unit for quantity of electricity is

Last Answer : Unit for quantity of electricity is coulomb.

The unit of flux is the same as that of

Description : The unit of flux is the same as that of

Last Answer : The unit of flux is the same as that of pole strength.

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

Description : A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be

Last Answer : A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be 2.4 N.

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

Description : Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be

Last Answer : Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be 0.1 N.

Susceptibility is positive for

Last Answer : Susceptibility is positive for ferromagnetic substances.

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

Last Answer : When two ends of a circular uniform wire are joined to the terminals of a battery, the field at the center of the circle will depend on the radius of the circle.

One maxwell is equal to

Last Answer : One maxwell is equal to 10 webers.

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

Last Answer : When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon resistance of the coil.

One telsa is equal to

Last Answer : One telsa is equal to 1 Wb/m2

The magnetism left in the iron after exciting field has been removed is known as

Last Answer : The magnetism left in the iron after exciting field has been removed is known as residual magnetism.

The relative permeability is less than unity is case of

Last Answer : The relative permeability is less than unity is case of diamagnetic materials.

Reciprocal of permeability is

Last Answer : Reciprocal of permeability is reluctivity.

The working of a meter is based on the use of a permanent magnet...

Description : The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields

Last Answer : The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields a soft iron shielding is used.

Gilbert is a unit of

Last Answer : Gilbert is a unit of magnetomotive force.

Ferrites are a sub-group of

Last Answer : Ferrites are a sub-group of ferri-magnetic materials.