Give the expression for inductance., Mechanical Engineering

Assignment Help:

Q. Give the expression for inductance of a ?N?   turn coil wound on a core having length I cross - sectional area A and magnetic permeability µ. Explain the significance of different terms involved.

Ans. 

Let an inductor L with turns N is wound over a core. In an ideal inductor, as we all know, no power loss take place therefore, we must use a very good magnetic material having B-H loop areas, also the operating point lies in the liner zone of B-H character, in order to get a constant value of inductance i.e. µr may be constant.

 

                        Let the lamination thickness is extremely small & core material has a very high resistivity ρ.

 

                       Let φ be the flux when current I flows through the coil

 

                       Then  total flux linkage = Nφ

 

                       Inductance               L = Nφ/i

 

                                                          = NBA/I, φ = B × A

 

                                                          = NµoµrHA, B = µoµrH

 

                                                          =  µoµr NHA/I = µoµrN. Ni/1 A/i

 

                           Let                  H = Ni/L

 

                                                  L = µoµr N2A/I


Related Discussions:- Give the expression for inductance.

Dry friction, Dry Friction: Dry friction (also called as coulomb fr...

Dry Friction: Dry friction (also called as coulomb friction manifests when the contact surfaces are dry and there is tendency for the relative motion. Dry friction is fu

Explain index jig, Explain Index Jig? 1. This type of jig, as the...

Explain Index Jig? 1. This type of jig, as the name suggests, incorporate a suitable indexing mechanism, by means of which the work piece can be indexed to required posit

Impact testing, Charpy impact tests, when required shall comply. Impact ...

Charpy impact tests, when required shall comply. Impact tests shall be conducted at the minimum design metal temperature or at a lower temperature and shall meet or exceed energ

Coated electrodes and their classifications, COATED ELECTRODES AND THEIR CL...

COATED ELECTRODES AND THEIR CLASSIFICATIONS Welding technology has changed tremendously over the past decades. Its application is found in all sectors of industries, smaller or l

Dry saturated steam - thermodynamics, Dry Saturated Steam - thermodynamics:...

Dry Saturated Steam - thermodynamics: A dry saturated steam is single phase medium. It does not have any water particle. It can be obtained on complete evaporation of water at

Explain about corrosion rates, Q. Explain about Corrosion Rates? Corros...

Q. Explain about Corrosion Rates? Corrosion rates of Corrosion data presented in these standards are in graphical form. The corrosion curves for the majority of the metals

What is the use of spindle in radial drilling machine, What is the use of S...

What is the use of Spindle in Radial drilling machine    The spindle holds the drill or cutting tools and revolves in a fixed position in a sleeve.

Flue gas excess oxygen control for steam generator, Q. Flue Gas Excess Oxyg...

Q. Flue Gas Excess Oxygen Control for steam generator? Air-gas ratio control provides approximate excess oxygen control. However, an in-situ oxygen probe measures the actual o

Stresses., temparature stresses in composite bars

temparature stresses in composite bars

Explain moulding sand for non-ferrous casting, Q. Explain Moulding Sand for...

Q. Explain Moulding Sand for Non-ferrous Casting? The melting point of non- ferrous metal is much lower than that of ferrous metals. Therefore, the moulding sands for non-ferr

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