$\backslash$table$[[19.,$AC motor $($NT$),$Fan,$22,1750,5,3\mathrm{.}73,],[20.,6-$cylinder engine,$\backslash$table$[[$Heavy$],[$conveyor$]],16,1500,40,29\mathrm{.}8,],[21.,\backslash$table$[[$DC motor$],[($compound$)]],$Milling machine,$16,1250,20,14\mathrm{.}9,]]$ For Problems $18-22($Table $7-27),$ design a V$-$belt drive. Specify the belt size, the sheave sizes, the number of belts, the actual output speed, and the center distance.

TABLE $7-27$ V$-$Belt Drive Design Problems

$\backslash$table$[[\backslash$table$[[$Problem$],[$number$]],$Driver type,$\backslash$table$[[$Driven$],[$machine$]],\backslash$table$[[$Service$],[($h$/$day$)]],\backslash$table$[[$Input speed$],[($rpm$)]],\backslash$table$[[$Input$],[$power$]],\backslash$table$[[$Nominal output speed$],[($rpm$)]]],[($hp$),($kW$)],[18.,$AC motor $($HT$),$Hammer mill,$8,870,25,18\mathrm{.}6,310],[19.,$AC motor $($NT$),$Fan,$22,1750,5,3\mathrm{.}73,725],[20.,6-$cylinder engine,$\backslash$table$[[$Heavy$],[$conveyor$]],16,1500,40,29\mathrm{.}8,550],[21.,\backslash$table$[[$DC motor$],[($compound$)]],$Milling machine,$16,1250,20,14\mathrm{.}9,695],[22.,$AC motor $($HT$),$Rock crusher,$8,870,100,74\mathrm{.}6,625]]$

Note: $NT$ indicates a normal$-$torque electric motor. $HT$ indicates a high$-$torque electric motor.For Problems $1822($Table $727),$ design a V$-$belt drive. Specify the belt size, the sheave sizes, the number of belts, the actual output speed, and the center distance. TABLE $727$ V$-$Belt Drive Design Problems

problem $19$ please