Consider a three phase, Y connected, $60$ Hz generator with $4$ poles and operating at $1800$ rpm$.$ The machine has an air gap of $4$ cm$,$ the radius to air?gap is $62$ cm and the radial length of the stator iron, $,$ is $2\mathrm{.}6$ m$.($i$)$ You are told that there are distributed windings on the rotor and stator. Sketch the mmf wave that you might expect and explain briefly the difference to the mmf wave of a concentrated wave and how this wave is approximated by the fundamental sine wave. You are given the following machine parameters: Distributed field winding : Nf $=64$ series turns, of $=0\mathrm{.}935$ Distributed armature winding: Nph $=14$ series turns per phase, kw $=0\mathrm{.}912($ii$)$ Calculate the field current required to produce a peak air$-$gap flux density of $0\mathrm{.}92$ T$.($iii$)$ Determine the Line voltage resulting from this machine