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!
It has been known for a thousand years or more (originating in China) that certain (magnetic) materials would always orientate themselves in a particular direction if suspended to rotate freely. The very earliest experiments in magnetism were done with these materials (permanent magnets) and these clearly showed that two pieces of these materials were able to exert some force at a distance. This force is analogous to gravitational force. We know from our own experience that it exists. Physicists theorise on the causes whilst engineers are more concerned with being able to measure the practical effect and put it to use by devising a suitable method of analysis.Very early experiments by Oersted and Ampere showed that a current carrying conductor also had an effect on magnetic material in its vicinity. Magnetic compasses placed near to a current carrying conductor were deflected. He also found that the direction of deflection depended on the position relative to the wire. Those above the wire were deflected in the opposite direction to those placed below. Ampere quantified the strength of this force in terms of the current and the distance involved. In order to be able to relate these observations to analysis, the concept of a magnetic field was introduced.The presence of a magnetic field may be visualised by drawing imaginary continuous lines of 'magnetic flux', the density of which is a measure of the strength of the field in a given material. Arrows are added to the flux lines to indicate the direction of the magnetic field, from which the direction of the force it produces on, for example, compass needles and current carrying conductors can be deduced. Convention has it that the magnetic field strength is denoted by the symbol H (ampere.turns), whilst magnetic flux density is given the symbol B (Webers/m2).
Q. Use of Speaker? Speaker:Basically speaker is the receiver for telephone. Speaker converts electrical signals received from local loop to acoustical signals(sound waves) that
With respect to serial communication define the asynchronous communication. Asynchronous implies "no synchronization", and therefore does not require sending and receiving idl
Factors Contributing in losses in Transformer Factors contributing towards losses in transformer are: - Oversized transformers operating at low loading: Improper selectio
Q. Draw the circuit of a common drain FET amplifier and explain. FET amplifier circuit The weak signal is applied between gate and source and amplified output is obtained
Give the properties and application of permanent magnetic materials. Permanent magnetic materials: Properties: Permanent magnetic materials have a huge area of hyster
all about ans in this topic
The subject of electrical measurements is such a large one that entire books have been written on the topic. Only a few basic principles will be introduced here. Practical measurem
Q. Determine the Thevenin resistance viewed from terminals A-B of the circuit of Figure by setting independent sources to be zero and applying a test voltage at terminals A-B.
how to make a matlab program for calculation of AT&C loss for perticular area
Q. How to convert Decimal to Binary number? To convert the decimal to binary is slightly more difficult. There are two procedures (Methods) that may be used to convert from dec
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