$2.$ Consider a single phase Potential Transformer rated $2\mathrm{.}4$ kV$/68\mathrm{.}5$ V with an accuracy $1\mathrm{.}2$X$.$ a$.$ What is the PT turns ratio? b$.$ If Primary voltage applied to the PT is $2\mathrm{.}6$ kV$,$ what is the PT secondary voltage? Show calculations c$.$ If Primary voltage applied to the PT is $2\mathrm{.}1$ kV$,$ what is the PT secondary voltage? Show calculations d$.$ If $3$ single phase PTs rated $2\mathrm{.}4$ kV$/68\mathrm{.}5$ V are connected Wye Wye $($solidly grounded$),$ what is the nominal secondary line to line voltage of the PTs$?$ VLL secondary $=?$