Does Flux Density Affect the Weight per KVA of a Transformer?

[swayam007]

Homework Statement

Cold-roiled steel of high silicon content enables the designer to use higher operating flux densities with lower loss per kg. The higher flux density reduces the weight per kVA.

Can anyone explain how & why does weight/KVA depends on flux density

Homework Equations

The Attempt at a Solution

 

[NascentOxygen]

Cold-roiled steel of high silicon content enables the designer to use higher operating flux densities ...

Higher flux density means you can run the transformer at higher currents. Higher current = higher kVA

 

[CWatters]

Look up saturation of a transformer core.