Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
Hysteresis loop
a. Write the advantages of choosing a single purpose processor over a general purpose processor. b. List out the hardware units that must be there in the embedded systems. c.
difference between cmp and sub in microprocessor.
Strategy and Customer Relationship Management CRM sometimes considers as only information technology because of availability of quite a good number of software packages in the
Q. Draw the differentiator circuit. Explain its principle of operation with necessary waveforms ? A circuit in which the output voltage is directly proportional to the derivati
Q. With a suitable block circuit, show how linear sweep voltage is generated ? The above figure shows a basic sweep waveform generator. The switching action of the switch
Q. Working of On - off hook circuit in telephone hand set? On/off hook circuit (sometimes termed as a switch hook) is nothing more than a simple single-throw, double-pole (STDP
how the clipper circuits are working? explanation of working of clipper circuits
write down the application of shift register and explain it.
Explain time multiplexed space switching? With a neat diagram illustrate its operation. Ans: Time division switches where an outlet or an inlet corresponded to a single s
Explain factors that change the resistivity of conducting materials. Temperature- Electrical resistance of most metals rises with increase of temperature whereas those of sem
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd