QUESTION $1$

The table below shows the power output of E$82-2000($kW$)$ wind turbine calculated at various wind speed class.

$($a$)$ Calculate the power output per wind speed class for all the wind classes.

$(9)$

$($b$)$ Which wind speed class has the largest power output?

$(1)$

Table$1.$ Wind Speed Class

$\backslash$table$[[v_i(\frac{m}{s}),\backslash$table$[[$Number of hours$],[$at $v_i\frac{m}{s}$ per year$]],\backslash$table$[[$Output power of$],[$E$82-2000,($kW$)]],\backslash$table$[[$E$82-2000,$ annual$],[$energy yield$],[($kWh$/$a$)]]],[0\mathrm{.}0,0\mathrm{.}0,,(1)],[1\mathrm{.}0,20\mathrm{.}2,0,(2)],[2\mathrm{.}0,113\mathrm{.}2,3,(3)],[3\mathrm{.}0,305\mathrm{.}0,25,(4)],[4\mathrm{.}0,593\mathrm{.}4,82,(5)],[5\mathrm{.}0,938\mathrm{.}3,174,(6)],[6\mathrm{.}0,1256\mathrm{.}0,321,(7)],[7\mathrm{.}0,1439\mathrm{.}5,532,(8)],[8\mathrm{.}0,1408\mathrm{.}3,815,(9)],[9\mathrm{.}0,1162\mathrm{.}6,1180,(10)],[10\mathrm{.}0,796\mathrm{.}4,1612,(11)],[11\mathrm{.}0,443\mathrm{.}4,1890,(12)$