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It is important to have the air gap in a magnetic circuit so that everything works properly. The air gap allows magnetic flux flow to the main source; without it, it would not work properly.
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Is Earth's atmosphere a vacuum?
Look at the diagram below: This is the molecular arrangement in gas, liquid and solid. We can say that the first jar represents the atmosphere of the Earth. If the air molecules in our atmosphere are arranged like this, there should be lots gap between them. What is there in this gap? If there is nothing in this gap, then there should be vacuum. So there should be vacuum in air. That is probably one of the funniest and best answers I have seen. A vacuum is a total lack of substance, of any kind. Since the atmosphere has substance then, by definition, it is not a vacuum
When an air gap is used what is the vertical distance between the supply pipe and the flood rim?
Two times the diameter of the supply pipe, but never less than 1 inch.
How are lightning bolt and a spark similar?
Both contain plasma.
What is a gap in an area's geologic history called?
A gap in an area's geologic history is called an unconformity.
What problems does an unconformity present?
An unconformity leaves a gap in the geological record
Why is air gap is necessary in particle magnetic circuits?
Mainly air gap is necessary in magnetic circuit for two necessary reasons: 1. to prevent saturation 2. to allow an object to move in the magnetic field
Why does a single phase AC series motor have a very short air gap?
All motors (and, indeed, generators) have a very narrow air gap. This is because the air gap forms part of the machine's magnetic circuit.A 'magnetic circuit' is the path in which the magnetic field produced by the machine's field windings is constrained, and is made up of silicon-steel in series with a very narrow air gap.Air has a very much higher reluctance (equivalent to resistance in an electric circuit) than the silicon-steel part of the magnetic circuit to the formation of flux and, so, must be kept as narrow as possible because reluctance is directly-proportional to the length of the air gap.
Why the air gap between stator and armature of electric motor is kept small?
Obviously, if there wasn't a gap, the rotor would not be able to rotate! However, the gap should be as small as possible in order to minimise the reluctance of the magnetic circuit (reluctance is equivalent to resistance), because the reluctance of air is very much larger than for silicon steel.
What is specific magnetic loading?
Specific magnetic loading is ratio average flux air gap and flux path of air gap:
Air gap flux is termed as useful flux why?
Basically useful fluke is the flux that flows with in the magnetic circuit of an armature. That is why when there is an air gap the flux enters the armature which makes it useful flux! Hope that answers your question!
What is specific load?
Specific electrical loading is the insertion of impedance into a circuit to change the characteristics of the circuit. In contrast, specific magnetic loading is the ratio between the average flux air gap to the flux path of the air gap. These two terms have nothing to do with each other and are therefore independent of each other.
What is specific electric loading?
Specific electrical loading is the insertion of impedance into a circuit to change the characteristics of the circuit. In contrast, specific magnetic loading is the ratio between the average flux air gap to the flux path of the air gap. These two terms have nothing to do with each other and are therefore independent of each other.
How does lamination affect the magneto-motive force across the air gap of a magnetic circuit?
It doesn't. There are three things that can affect this force: another magnetic field, another conductor within the field, and the size of the gap itself, of course.Lamination is, in essence, insulation, and anything non-magnetic and non-conductive within the field is transparent to the field itself - it's as if it weren't there.
What is the function of magnetic core in electrical machine?
The core, together with the machine's air gaps, form what is known as a 'magnetic circuit', which is a low-reluctance path that encloses the magnetic flux produced by its field windings, in order to concentrate that flux in the air gap through which the armature passes.
What happens when a circuit has a gap in it?
When a circuit has a gap in it, everythig stops working because the electricity wont be able to flow around the whole circuit
Magnetic-potential drop occurs across the air gap?
There is a magnetic-potential drop across an air gap. If you represent a magnetic core with a winding current i as a magnetic circuit. The magneto-motive force will be your voltage source, where the mmf (magneto-motive force) = Ni; (number of turns on the core and current product) == ∫Hdl=mmf=N*i. The elements that would be in the circuit would be in series and it would be represented as two "resistors" or better known in magnetics as the reluctance of the material which has a parallel equivalence to the resistor's characteristics.Reluctance=Rmk=length of material divided by the product of the Area and permeability of the material µ.Rmk=lk / (µk*Ak); where k is the number of of "legs" of the core or different mediums you approach.To answer the air gap problem, the air gap would have a Reluctance where µ = µ0, permeability of free space and the Area of the Magnetic flux would be the same size of the area of the core. Finally the length would be the size of the airgap=δ.Now since you have the reluctance of the airgap rmδ= δ /(µ0*Area of core). The Magnetic Drop is now = Umk where k is δ = Umδ = mmf / Rmδ = µ0*Area*N*i/δ
What is a moving iron galvanometer?
A moving iron galvanometer is used to intensify the magnetic field by reducing the length of air gap across which the magnetic flux has to pass.
