SSC JE Electrical Engineering 22 Jan 2018 Morning Paper

Hysteresis Loss occurring in iron material is given by
${\mathit{P}}_{\mathit{n}}=\mathit{\eta }\times {\mathit{B}}_{\mathit{m}}^{1.6}\times \mathit{f}\times \mathit{V}$
When η is steinmetz factor
${\mathit{B}}_{\max }$ is density of flux
f is frequency
and V is volume.
In order to minimize hysteresis loss, the core is made up of silicon steel.