Explain hysteresis loop, Electrical Engineering

Assignment Help:

Explain Hysteresis loop.

Hysteresis loop: In a ferromagnetic material, the flux density B raises while external applied magnetic field H to it is raised. When the saturation gets, the raise in flux ceases even though H may be raised. This has been demonstrated by OS in the figure. If the external field is slowly reduced, the original curves OS is not retraced although follows curve SR. The external field H is decreased to zero but B does not reduce to zero that is the material keeps magnetised. The value of R flux density is termed as remanent flux density or residual magnetism. So as to demagnetise the material completely, external magnetic field must be reversed and while this reaches the value OC in reverse direction, this is seen that B is zero. This applied reverse magnetising force that causes B to become zero is termed as coercive force. Additional increase of H in reverse direction will now rise in B in reverse direction and again at the point S saturation arises. The residual magnetism in reverse direction is represented through OR and to neutralise this H should be increased in positive direction to the value OC. Additional increase in H will again magnetise the material and saturation will arise at S. The characteristic of magnetic behaviour of the ferromagnetic material is above in property. When the material is taken by one complete cycle of magnetisation, this traces a loop termed as hysteresis loop. While a material is subjected to cyclic changes of magnetisation, the domains modify the direction of their orientation in accordance along with H. Work is completed in changing the direction of domains, that leads to production of heat in the material. The energy needed to take the material by one complete cycle of magnetisation is proportional to the area enclosed through the loop.

2295_Hysteresis loop.png

Hysteresis loop


Related Discussions:- Explain hysteresis loop

Give a short description of soft ferrites, Give a short description of soft...

Give a short description of soft ferrites . Soft ferrites and their applications: all non- metallic compounds are consisting of ferric oxide and one or two bivalent metal oxid

Write down expressions for vbn, Q. Referring to Figure, let V BN = V RN =...

Q. Referring to Figure, let V BN = V RN = 120 V rms magnitude, and V BR = 240 V rms magnitude. Write down expressions for v BN (t), v RN (t), and v BR (t), and sketch them as a

Common-emitter configuration, Common-emitter configuration: The commo...

Common-emitter configuration: The common-emitter that is abbreviated as CE transistor configuration is displayed in figure.  The transistor terminal common to both the input

What is meaning of parallel in - serial out shift register, What is the Mea...

What is the Meaning of Parallel In - Serial Out Shift Registers? A four-bit parallel in - serial out shift register is shown below D0, D1, D2 and D3 are parallel inputs

amp circuit , Refer to the op amp circuit shown below. Let R 1 = ...

Refer to the op amp circuit shown below. Let R 1 = 140 k_, R 2 = 10 k_, R 3 = 10 k_, R 4 = 20 k_, RL = 10 k_. Assume the op amp is ideal. Find the equation relating the

Electromechanical energy conversion and device, importance of electromechan...

importance of electromechanical energy conversion and device in electrical engineering

Binary multiplication, Q. What do you mean by Binary Multiplication? Th...

Q. What do you mean by Binary Multiplication? The Rules of Binary Multiplication 0 x 0 = 0 0 x 1 = 0 1 x 0 = 0 1 x 1 = 1 , and no carry or borrow

Electrical engineering, 4. Modify the circuit designed for question 3 to pr...

4. Modify the circuit designed for question 3 to provide an emergency stop which will park both cylinders in the extended position (i.e. A + B +). 5. Modify the circuit designed fo

Determine the armature current, A 2300-V, three-phase, wye-connected, round...

A 2300-V, three-phase, wye-connected, round rotor synchronousmotor has a synchronous reactance of 3 per phase and an armature resistance of 0.25  per phase. The motor operates on

Multiplexing 64-to-1 by using four 16-to-1 multiplexers, Q. Show an arrange...

Q. Show an arrangement for multiplexing 64-to-1 by using four 16-to-1 multiplexers and one 4-to-1 multiplexer.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd