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!
THE MAGNETIC CIRCUIT
In an electric circuit, a current is established due to the existence of an electromotive force. In the same way, in a magnetic circuit, a flux is established due to the existence of a magnetomotive force. The mmf is produced by the current flowing in the coil and its value is the product of the current and the number of turns on the coil.
Magnetomotive Force = Current x Number of Turns on the Coil
Note that, although mmf is quoted in ampere turns, the actual unit dimension is in amperes.
MAGNETISING FORCE
The magnetomotive force can be expressed in terms of the length of the magnet. It is then referred to as the magnetising force or magnetic field strength and given the symbol H. The magnetising force is a measure of the intensity of the magnetic effects at any given point in the magnetic field.
Magnetising Force (H) = Magnetomotive Force / Length of magnet
Note that:
• The unit of field strength is ampere per metre, although it may be quoted as ampere turns per metre.• The length of a solenoid ‘l', is the length along its axis and not the length of wire from which the solenoid is made.
It will therefore be seen that a solenoid having 10 turns per metre carrying a current of 6A (10* 6 = 60 ampere/metre) will produce the same strength of magnetic field as one of 12 turns per metre carrying 5A (12 *5 = 60 ampere/metre).
Explain about the transmission electron microscope. The Transmission Electron Microscope Transmission electron microscopy (TEM) is a microscopy method; a beam of electrons i
different questions and their answers about elasticity
A laser beam from 200 watt source is focused on an area of 10 -8 m 2 . Determine the magnitude of the Pointing vector of the area.
Explain about the working of functional units in ultrasonic pulse echo system. The master timer by the electronic clock triggers the signal pulse generator at ordinary interval
Ripple tank The concept of reflection and refraction of light waves can be understood by the study of reflection and refraction of waves on water. The water waves travel
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
how make a good project
How nikol prisim can use as polarizer and analyzer
Give reasons for the following (i) Long distance radio broadcasts use short-wave bands. (ii) The small ozone layer on top of the stratosphere is crucial for human survival.
Surface Mount Devices (SMDs) are new components designed with soldering pads or short leads. They are much smaller in size as compared to leaded components. The SMDs are directly 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