Flux density formula

Flux density formula
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Flux density formula

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Define magnetic flux density and state its formula.

Description : Define magnetic flux density and state its formula.

Last Answer : The magnetic flux per unit area is called as magnetic flux density. Magnetic flux density is denoted by B. The formula for magnetic flux density is Weber per metre square or Tesla. Mathematically ... the unit of magnetic flux density is Weber per metre square which is also called as Tesla.

Define the following terms: i) Magnetic flux density, ii) Reluctance, iii) Magneto-motive force, iv) Permeance.

Description : Define the following terms: i) Magnetic flux density, ii) Reluctance, iii) Magneto-motive force, iv) Permeance.

Last Answer : (i) Magnetic flux density (B): It is the magnetic flux per unit area measured at right angles to the flux path. (Its unit is weber/m2 or tesla).  (ii) Reluctance: It is the ... flux to set up through it and it is reciprocal of reluctance. Permeance = 1/ Reluctance. Unit: weber/ampere.

what is the unit of flux density?

Last Answer : Flux density is denoted by B. And it is given as B = flux/ area Where, the unit of flux is Weber and unit of area is meter square. So the unit of flux density is weber per meter square which is also called as Tesla.

In an induction motor if the flux density is reduced to one-half, of its normal value then the torque will

Description : In an induction motor if the flux density is reduced to one-half, of its normal value then the torque will  (1) reduce to one-half (2) reduce to one-fourth (3) remain unchanged (4) increase four times

Last Answer : In an induction motor if the flux density is reduced.to one-half, of its normal value then the torque will reduce to one-fourth

If B is the flux density, I the length of conductor and v the velocity of conductor, then induced e.m.f. is given by?

Last Answer : If B is the flux density, I the length of conductor and v the velocity of conductor, then induced e.m.f. is given by Blv.

What is the permissible flux density in case of cold rolled grained oriented steel?

Description : What is the permissible flux density in case of cold rolled grained oriented steel?

Last Answer : The permissible flux density in case of cold rolled grained oriented steel is 1.7 Wb/m2.

Describe the concept of leakage flux, useful flux and fringing with neat diagram.

Description : Describe the concept of leakage flux, useful flux and fringing with neat diagram.

Last Answer : Leakage Flux

Which of the following is a unit of magnetic flux?

Description : Which of the following is a unit of magnetic flux? A) Weber B) Maxwell C) Both A and B D) None of these

Last Answer : Which of the following is a unit of magnetic flux? A) Weber B) Maxwell C) Both A and B D) None of these

The property of a material which opposes the creation of magnetic flux in it is known as?

Description : The property of a material which opposes the creation of magnetic flux in it is known as?

Last Answer : The property of a material which opposes the creation of magnetic flux in it is known as reluctance.

The unit of magnetic flux is?

Description : The unit of magnetic flux is?

Last Answer : The unit of magnetic flux is weber.

In lead acid battery the density of acid indicates the

Description : In lead acid battery the density of acid indicates the  (1) charge of the battery (2) level of acid (3) e.m.f of the battery (4) damage of the plates

Last Answer : In lead acid battery the density of acid indicates the charge of the battery

Define the following terms and state their units: (i) Luminous intensity, (ii) Luminous flux

Description : Define the following terms and state their units: (i) Luminous intensity, (ii) Luminous flux

Last Answer : i) Luminous intensity: This is defined as the luminous flux emitted into a solid angle of space in a specific direction. Its unit is the candela.  OR  The luminous flux per unit solid angle ( ... energy radiated by the light source in all direction. The unit of luminous flux is lumen (lm) 

In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation,

Description : In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation, the machine is operating as  (1) synchronous motor (2) synchronous generator (3) asynchronous motor (4) asynchronous generator

Last Answer : In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation, the machine is operating as synchronous generator 

It is possible to increase the field flux and, at the same time, increase the speed...

Description : It is possible to increase the field flux and, at the same time, increase the speed of a d.c. motor provided its .......... is held constant.

Last Answer : It is possible to increase the field flux and, at the same time, increase the speed of a d.c. motor provided its armature current is held constant.

Interpole flux should be sufficient to?

Last Answer : Interpole flux should be sufficient to neutralise both the armature reaction flux as well as commutating e.m.f. induced in the coil.

The path of magnetic flux in a transformer should have?

Description : The path of magnetic flux in a transformer should have?

Last Answer : The path of magnetic flux in a transformer should have low reluctance.

An energy signal has G(f) = 20. Its energy density spectrum is

Description :  An energy signal has G(f) = 20. Its energy density spectrum is A) 20 B) 100 C) 400 D) 800  

Last Answer : 400

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Description : What is the formula for resistivity?

Last Answer : Resitivity is the property of a material. It is given in ρ . R=ρ L/A is the formula. where , Resitance is directly proportional to Length & Inversely proportional to Area of ... the resistance offered by a conductor to the flow of current is called specific resistance or resistivity.

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Can someone show me, and explain, the math formula that was responsible for the subprime mortgage scandal?

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The following formula is correct:

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What's the difference between these two formulas ?

Description : What's the difference between these two formulas ?

Last Answer : Homework question?

Unit of flux density in magnetic circuits is ______________.

Description : Unit of flux density in magnetic circuits is ______________. A. Tesla B. dB C. Weber D. Hz 

Last Answer : Unit of flux density in magnetic circuits is Weber.

If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density:

Description : If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density: A. increases B. decreases C. remains the same D. doubles

Last Answer : If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density: decreases

The material used for the magnetic circuit where high value of flux density required is

Last Answer : The material used for the magnetic circuit where high value of flux density required is ferro cobalt.