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!
Inductors in dc circuits:
If it is required to increases the value of inductance in a circuit, then two or more inductors may be connected in series. The total inductance then depends on the sum of individual inductances and the mutual coupling between them.
With no mutual coupling:
LT = L1 + L2 etc
If the coils are positioned so that the mutual induced emf's in each coil aid the self induced emf's then the coils are said to be series aiding, and
LT = L1 + L2 + 2M
If the coils are positioned so that mutually induced emf's in each coil oppose the self induced emf's, the coils are said to be in series opposing, and
LT = L1 + L2 - 2M
Thus if the position of L2 reference to L1 can be reversed, then the total inductance will vary between:
and LT = L1 + L2 - 2M
giving a total variation of 4M.
A device which will achieve this is called variometer. It consists of two coils located one inside the other. The outer coil (stator) is stationary whilst the inner coil (rotor) is capable of rotation through 180 degrees. The coils are mutually coupled and connected in series, in one position the rotor field aids the stator field, when the rotor is turned 180º the rotor field opposes the stator field. Then the coils are at 90 degrees to each other, mutual coupling is negligible.
Illustrate the characteristics of a sound note. What do you mean by Resonance? Illustrate with an example.
(1) The current in a super conductor once set up continuous for a very long time without attenuations. (2) The permeability of a super conducto
Illustrate the term temperature sensor? Temperature sensor: Bimetal coated onto the tip of fiber. When temperature increases the bimetal bends because of difference within t
Explain moment of inertia Moment of inertia is the term used to calculate or quantify the amount of mass located at an object's extremities. For instance if all the mass of an
A boy goes to market with a average speed of 29 km/h.He returns back half the way he went with a average speed of 40 km/h.Find average speed for whole journey.
When the two simple harmonic motions have the same periodic time but different amplitude and a phase dissimilarity = ∏/2: The resultant curve may be attained graphically as abov
explain the maxima and minima in fraunhoffer difraction
How does a color changes works in glass, glass segments or a polymer material? This consists usually of a small, geared motor with a disc. It can be made of glass, a polymer ma
Two flawlessly conducting spheres are in an evacuated region of space. One is at a potential of 12 volts as well as the other is at a potential of 15 volts. A free electron is rele
A small ball with a mass of 60.0 g is loaded into a spring gun, compressing the spring by 12.0 cm. When the trigger is pressed the ball emerges horizontally from the barrel ata hei
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