What is mutual flux in transformer?

flux is just the magnetic lines and the magnetic lines present in between two magnets or solenoid is mutual flux. These are the lines through which the attraction and repulsion occurs.

When a sinusoidal exciting current is applied to a transformer What is the mutual flux produced?

If a sinusoidal exciting current is applied to a transformer, the mutual flux produced is Flat top.

Which part of transformer produces magnetic flux?

When an alternating current (AC) generator supplies current to the primary winding of an unloaded transformer, its magnetomotive force (MMF) produces an alternating mutual flux (ɸm) in the core. This small current is called the exciting current. Its magnitude is about 3\% or less of the full load current.

Which type of flux does transformer action need?

magnetic flux
Therefore, transformer action requires an alternating or time-varying magnetic flux to transfer power from the primary side to the secondary side since induced emf in the winding is due to flux linkage.

How do you calculate mutual flux?

The mutual inductance M21 of coil 2 with respect to coil 1 is the ratio of the flux through the N2 turns of coil 2 produced by the magnetic field of the current in coil 1, divided by that current, that is, M21=N2Φ21I1.

What is leakage flux and mutual flux?

Leakage flux is both undesirable and. 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.

What is meant by rating of a transformer?

Transformer ratings are measured in volt-amperes (VA) or kilovolt-amperes (WA). Transformer Ratings. Engineers rate power transformers according to the maximum output voltage and current they deliver.

What is leakage flux in transformer?

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 is mutual flux in a transformer?

In a transformer, both primary and secondary currents produce flux. The flux Ф which links both the windings is the useful flux and is called mutual flux. However, primary current would produce some flux Ф1 which would not link the secondary winding. Similarly, secondary winding would produce Ф2 that would not link the primary winding.

Why do large transformers have high flux densities?

Large power transformers operate at high flux densities because working with the iron unsaturated requires a large size, increasing costs. In nonmagnetic materials, such as air, the hysteresis loop becomes a single diagonal straight line through the origin. The alternating flux causes currents to flow in the core.

What is an exciting current in a transformer?

When an alternating current (AC) generator supplies current to the primary winding of an unloaded transformer, its magnetomotive force (MMF) produces an alternating mutual flux (ɸm) in the core. This small current is called the exciting current.

What is leakage current in a transformer?

When an AC source energizes a transformer, under no-load conditions, a small exciting current flows generating a mutual flux and heat losses in the core. The exciting current components are the core-loss current and the magnetizing current. Leakage fluxes link only the windings that produce them.