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No not all electodes have a flux, in some cases such as certain M.I.G welding the electrode resemble bare wire because it has no flux?
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Why transformer is called constant flux machine?
when a load is connected to a transformer current(say I2) flows through secondary coil thus an M.M.F (N2I2) is produced ,this produces the secondary flux. This flux reduces the the main flux induced in the primary & also reduces E.M.F E1 in the primary As a result more current is drawn from the supply. This additional current drawn is due to the load component(say I2' ) This I2' is anti-phase with I2.This I2' sets a flux which opposes the secondary flux & helps the main flux. The load component flux neutralises the secondary flux produced by I2 .The M.M.F N1I2' balances N2I2.Thus the net flux is always at constant level. As practically flux is constant,the core loss is constant for all loads. Hence a transformer is always called a Constant Flux Machine.
Is mutual flux in transformer constant for all loads?
The flux is set by the voltage applied to the transformer. In most applications, the voltage is constant, and therefore the flux is constant also.
What is the meaning of welding electrode E7018?
E = Electrode70 = 70 thousand tensile strength1 = All position welding8 = lime-floridecoating,iron powder,bonded with sodium silicate(Flux)
Why are all cores exposed to ac flux variation laminated?
Limit effects (heat loss) caused by eddy currents
Why does voltage lead current in an inductor?
From what I've read, an inductor is designed to store energy in the form of a magnetic flux. A simple inductor can be thought of as a coil of wires around a medium. The current causes the flux to go through each turn of the coil. Further examination and Faraday's law leads to this model. v= N * D(magnetic flux) Because the current inside the coil is what generates the flux, the voltage will change first, before the flowing electrons will get all the way through the inductor. The inductance constant L is the Number of turns in the wire times the ratio of the current i to the magnetic flux, which is usually a constant. L = N*flux/i Which leads to this relationship between voltage and current in an inductor: v = L* D(i) The D() function being a derivative. Because the derivative of the current will change before the current actually does, voltage leads current in an inductor.
What is welding flux?
The term flux means to clean. Not all welding processes use a flux. Stick welding electrodes contain fluxing agents. MIG hard wire doesn't but flux-cored MIG wire does. TIG does not as the rods are bare. Most brazing applications require flux. Gas welding usually doesn't except for certain metals.
What is the meaning of e7018-1 welding eletrod?
E stands for Electrode,70 stands for tensile strength,1 stands for position of welding that is for all positions 8 stands for flux coating.
What is the primary use of carbon and graphite electrodes?
electrodes are used in all types of electric furnaces.
Why transformer is called constant flux machine?
when a load is connected to a transformer current(say I2) flows through secondary coil thus an M.M.F (N2I2) is produced ,this produces the secondary flux. This flux reduces the the main flux induced in the primary & also reduces E.M.F E1 in the primary As a result more current is drawn from the supply. This additional current drawn is due to the load component(say I2' ) This I2' is anti-phase with I2.This I2' sets a flux which opposes the secondary flux & helps the main flux. The load component flux neutralises the secondary flux produced by I2 .The M.M.F N1I2' balances N2I2.Thus the net flux is always at constant level. As practically flux is constant,the core loss is constant for all loads. Hence a transformer is always called a Constant Flux Machine.
Why is a transformer called constant flux machine?
when a load is connected to a transformer current(say I2) flows through secondary coil thus an M.M.F (N2I2) is produced ,this produces the secondary flux.This flux reduces the the main flux induced in the primary & also reduces E.M.F E1 in the primaryAs a result more current is drawn from the supply. This additional current drawn is due to the load component(say I2' )This I2' is anti-phase with I2.This I2' sets a flux which opposes the secondary flux & helps the main flux.The load component flux neutralises the secondary flux produced by I2 .The M.M.F N1I2' balances N2I2.Thus the net flux is always at constant level.As practically flux is constant,the core loss is constant for all loads.Hence a transformer is always called a Constant Flux Machine.
In transformer core flux depends on voltage whereas leakage flux depends on current?
In a Transformer, Core flux is the difference of primary flux and Secondary flux which are opposite to each other in direction. There difference is equal to the no load flux at all loads. So, some of primary flux passes through the core and remaining becomes leakage flux (Because Secondary flux forces it to get out of the core). Same is the case with Secondary flux. Now, flux is directly proportional to Voltage and Current. When Current increases due to increased load (and voltage remains same): Then both primary and secondary flux increase. Because both of them increase, so there difference remains same. And all remaining flux is forced out. Hence leakage flux increases with current, but Core flux remains constant. When Primary Voltage is increased: Then only primary flux increases. So difference of this new increased primary flux and previous same secondary flux increases. Hence Core flux increases with voltage, But leakage flux does not. That's how In transformer core flux depends on voltage whereas leakage flux depends on current.
What elements are attracted to negative or positive electrodes?
all of them
Is mutual flux in transformer constant for all loads?
The flux is set by the voltage applied to the transformer. In most applications, the voltage is constant, and therefore the flux is constant also.
Pupose of the aquadag coating in CRT?
The purpose of graphite coating called Aquadag coating is to absorb all the electrons that get diverted from their path while they are travelling coaxial to the CRT. These electrons are attracted towards the aquadag coating and returned to the anode accelerating anode.
What makes a material diamagnetic?
All materials naturally repel magnetic lines of flux but some materials, like iron, are attracted to magnetic flux because they have unpaired electrons that are attracted to the lines of flux.
What is reflectance in lighting design?
The ratio of reflected flux to incident flux. Flux - The time rate of flow. For example, volume per hour is the flux of a fluid. Reflectance also is called Light reflection Value. In lighting design, we need to consider all reflectance for proper lighting simulation to real time environment. In general, wall, floor, ceiling reflectance will be 50%,80%, 20-40%. It also depends on painting color of room
How the internalorgans are held in place?
All of our internal organs have a second coating over them. The covering of your heart for example is called the pericardium the lungs the pleura. This helps to not only protect the internal organs but also helps maintain it's placement within the body. The abdominal cavity also has a coating between the organs and outer structures, this coating is called the Omentum. This Omentum is what holds the internal organs in place.
