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 Soft magnetic materials.
Soft magnetic materials -They contain small enclosed area of hysteresis loop, high permeability low eddy current losses and high saturation value that is achieved using laminated cores and less residual magnetism. Soft magnetic materials keep their magnetism as long as they are energised through an external magnetic field; illustration: Alpha iron, silicon ferrite and super permalloy (Ni-Fe-Mo). Soft magnetic materials are utilized for the construction of cores for transformers, electrical machines, cores of audio frequency couplings and electromagnets reactors and matching transformers in telecommunication.
Hard Magnetic materials-have a slowly rising magnetization curve along with large hysteresis loop area and therefore large energy losses. They contain high value of coercivity, high value of retentivity and low permeability. For saturating the hard magnetic materials, a high magnetizing force is needed. Hard magnetic materials have the property of retaining their magnetism still after the magnetising field is eliminated. Illustration: Alnico (Al-Ni-Co), retaining similar and Cobalt steel for a long time. Because of this property they are utilized in manufacture of permanent magnets.
B-H curves for soft and hard magnetic materials
Illustrate the working of full wave rectifier using bridge rectifier. How is it different from centre tapped Rectifier ? Illustrate Avalanche and Zener breakdown. Draw & explain
Given an n-channel enhancement MOSFET having V T = 4V, K = 0.15 A/V 2 , I DQ = 0.5A, V DSQ = 10 V, and V DD = 20 V. Using the dc design approach outlined in this section, dete
Q. Explain Wireless electromagnetic channels? Wireless electromagnetic channels are used in wireless communication systems, in which the electromagnetic energy is coupled to th
truth table of decimal to seven segment
a) Give four features that were traditionally reserved to RISC architectures? b) Determine the overall throughput for 21 sequential instructions assuming a four-stage pipeline a
Explain temperature dependence of electrical conductivity and resistivity in conductors. When the temperature is increased, there is a greater thermal motion in atoms that redu
Solution for dc motor speed and position controller
how do ratos connect to engineering
Among copper and mercury which is better conductor of electricity?
Q. What do you mean by Companding? In order to lower the crest factor of a waveform, so as to produce better performance, a process known as companding is used. It works like a
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