# When the primary and secondary windings of a transformer are perfectly magnetically coupled?

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## When two coils are magnetically isolated then coefficient of coupling is?

k=1, when the flux produced by one coil, completely links with the other coil and is called magnetically tightly coupled. k=0, when the flux produced by one coil, does not link at all with the other coil and thus the coils are said to be magnetically isolated.

## What is magnetic coupling in transformer?

Magnetically coupled circuit means that two loops, with or without contacts between them, affect each other through the magnetic field generated by one of them. • Based on the concept of magnetic coupling, the transformer is designed for stepping up or down ac voltages or currents.

## How are the windings of a transformer coupled?

The primary winding and secondary winding are the two windings that make up a standard transformer. Magnetically linked and electrically separated, these two windings. Due to a common mutual flux, the main and secondary windings of a two-winding transformer have induced emf and are thus in phase.

## What is coupling coefficient when there is ideal coupling?

What is the coupling coefficient when there is ideal coupling? Explanation: When all the flux of coil 1 links with coil 2 it is known as an ideal coupling where the coupling coefficient is 1.

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## What is coupling coefficient in transformer?

The quantity of total magnetic flux linked to another coil compared to total magnetic flux in a coil is known as the coefficient of coupling. It is defined as the ratio of the number of magnetic flux lines common between two coils (inductors) to the number of magnetic flux lines in a coil.

## What is magnetic coupling?

A magnetic coupling is a coupling that transfers torque from one shaft to another, but using a magnetic field rather than a physical mechanical connection. … Magnetic shaft couplings preclude the use of shaft seals, which eventually wear out and fail from the sliding of two surfaces against each another.

## Is there an electrical connection between the primary and the secondary windings of a transformer?

Inductance and Transformers

and secondary windings, as shown in Figure 8.48. That is, there is no electrical connection between the primary and secondary windings of the transformer. (Only the electromagnetic field links the secondary with the primary.)

## What do you mean by inductive coupling?

: electrical coupling in which the influence is that of mutual induction usually between two coils close together or wound on a common core.