What is the difference between fringing flux and leakage flux?

Some of the total flux produced by the ring does not cross the air gap, but instead takes a shorter route as shown in Fig. 10.28 and is known as leakage flux. The flux while crossing the air gap bulges outwards due to variation in reluctance. This is known as fringing.

What is the relation between leakage flux and leakage reactance?

A small portion of flux will link either winding but not both. This portion of flux is called leakage flux. Due to this leakage flux in transformer, there will be a self-reactance in the concerned winding. This self-reactance of transformer is alternatively known as leakage reactance of transformer.

What is leakage flux and how does it affect the output of a transformer?

a. the leakage flux in both windings serves to reduce the output voltage of the secondary; the mutual flux is less than the available primary flux because of primary leakage, and the net flux in the secondary is the mutual flux less the secondary leakage.

What is mutual and leakage flux in transformer?

The leakage flux linking with each winding produces a self-induced e.m.f in the winding and this emf is equivalent to the inductive coil in series with each winding and the voltage drop in each series coil is equal to that produced by leakage flux.

Is the mutual flux and leakage flux are the same if yes or no state why?

In a transformer, the mutual flux i.e. the flux that links both primary coil and secondary coil, is a little less than 100\%. There is some flux which links only with the primary coil, but not with the secondary coil. This is called primary leakage flux and it contributes to primary leakage reactance.

What is leakage flux?

Leakage flux is defined as the magnetic flux which does not follow the particularly intended path in a magnetic circuit. When a current is passed through a solenoid, magnetic flux is produced by it.

What causes flux leakage?

The principle of flux leakage is used to detect casing corrosion, since flux leakage is caused by rapid changes in the thickness of the casing and by pits and holes in either the internal or external wall. Flux leakage distorts the magnetic-flux lines and induces a signal into an electric coil moving past it.

What are the types of leakage flux?

The leakage in machines falls into the following two broad categories:

• Leakage in main poles, and.
• Leakage in armature.

What is the difference between leakage and stray flux in Transformers?

The leakage flux does not necessarily escape the transformer. Stray fields necessarily escape the transformer. The stray flux can link one or two of the windings. Stray flux can exist in the air without adding to the leakage inductance. The stray flux is not measured as a voltage drop at the terminals.

Leakage Flux And Fringing Leakage flux is defined as the magnetic flux which does not follow the particularly intended path in a magnetic circuit. Taking an example of solenoid you can explain the leakage flux and the fringing both. When a current is passed through a solenoid, magnetic flux is produced by it.

What is useful flux φ U?

Most of the flux is set up in the core of the solenoid and passes through the particular path that is through the air gap and is utilised in the magnetic circuit. This flux is known as Useful flux φ u.

How to calculate the total flux produced by a magnetic solenoid?

Therefore, the total flux Φ produced by the solenoid in the magnetic circuit is the sum of the leakage flux and the useful flux and is given by the equation shown below. Leakage coefficient. The ratio of the total flux produced to the useful flux set up in the air gap of the magnetic circuit is called leakage coefficient or leakage factor.