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Why eddy current damping is not used in moving iron instruments?
because eddy current is produced by the heat produced in winding
Eddy current type dynamometer?
An Eddy Current absorption dynamometer produces braking torque using the principle of eddy currents induced in a rotating metallic disk, immersed in a magnetic field. It is basically an eddy current brake mounted in trunnion bearings. Its advantages are maintenance, control, simple construction and desirable speed-torque characteristics. The speed-torque characteristics make the eddy current dynamometer ideal for engine testing, and its versatility also allows effective use in testing transmissions, turbines, electric motors, gears, pumps and many other machines.
How is eddy current related to the thickness of the stampings of core?
A: Eddy currents are current losses if an iron bolt is used to hold the core lamination together that alone will cause losses. Usually a brass bolt is used to eliminate losses
Why you put coil in nonmetallic frame not in metallic frame in ballistic galvanometer?
A nonmetallic frame is used for a ballistic galvanometer to prevent damping of the coil movement by eddy currents induced in a metallic frame. This allows the coil to move freely and respond accurately to the changing magnetic field, making the instrument more sensitive and accurate in measuring current pulses.
What are electrodes?
Electrodes are electrical conductors used to connect a non-metallic part of a circuit to a metallic part, allowing electric current to flow between them. They are commonly used in batteries, electrochemical cells, sensors, and medical devices to facilitate the transfer of electrons.
How does an eddy current work and what are its applications in various industries?
An eddy current is a type of electrical current that flows in a circular pattern. It is created when a conductor is exposed to a changing magnetic field. Eddy currents are commonly used in industries for non-destructive testing, metal sorting, and electromagnetic braking systems. They can also be found in applications such as metal detectors, induction heating, and speed sensors.
How is a Bunsen burner used to identify a substance?
The role of Bunsen burner is to heat; some metallic ions have specific colors in the flame.
What is exciting current in transformer?
Excitation current is the current necessary to "turn on" the transformer so it can be used. It's energy that is lost in the use of the transformer. Most of this loss I believe is associated with the hysterisis loop, although some will be lost as eddy currents.
What are the advantages of shell type transformers?
this type of transformer used special low loss steel to minimize eddy current losses and reduced leakage flux.
What causes eddy current?
In magnetism:An eddy current is induced into a metal when magnetic lines of force move across it. A South pole causes circulating current in clockwise direction while a North pole causes current in counter-clockwise direction. These eddy currents thus buck the applied forces. Eddy currents are undesirable when induced into transformer cores causing power loss. Lamination of core material reduces current flow in the core. Current induced into the secondary winding of a transformer is a used to step-up or step-down voltages so that they can be of a correct size for end-use applications.When time-varying magnetic field is applied to electrical machines like transformers, a time-varying emf is induced in the transformer cores. A short circuit occurs at the molecular level in the core. Due to less resistance, a large current begins to flow in the core. This causes heating in the core. Actually the path of the current is circular resembling the circular waves in a pool of water (eddy). Hence these currents are called eddy currents.In fluids:In water flow, an eddy is a current that flows opposite the normal flow. If on a river, an eddy is a current that will flow upstream in a side channel filling it, even if the flow is in an opposite direction of the original flow. It is equivalent to a stream's water level rising because the river it feeds has more water in it than the stream, thus making the water flow upstream. It can also be an area that seems not to have a current at all.A:Just like there exists a magnetic path due to current (charge) flow in a conductor (direction given by right hand rule), the thing works other way as well...When there is a flux path crossing a current conducting material, there exists current paths around the flux line on the conductor plane centered to the point where flux line meets the plane. These currents are eddy currents.Commonly available in magnetic circuits. Laminations are done to minimize the ability to flow eddy currents.
Is there a river in Germany called the eddy?
no, but an eddy is related to all rivers and is a term used for a section in a river .
What is mean by eddy current brake mechanism?
An eddy current brake mechanism is a type of braking system that utilizes electromagnetic induction to create resistance against the motion of a conductive material, typically metal. When a conductor moves through a magnetic field, it induces circulating currents, known as eddy currents, within the conductor. These eddy currents generate opposing magnetic fields that produce a braking force, slowing down the moving object without physical contact. This system is commonly used in trains and roller coasters for smooth and maintenance-free braking.
