Question $3$: $[20$ Marks$]$

A wind turbine generator system is shown in Figure $1.$ Answer the following questions.

Figure $1$

$3\mathrm{.}1.$ Identify the type of wind turbine generator technology being applied here.

$[4]$

$3\mathrm{.}2.$ Explain how this system operates and how it maintains constant frequency despite the rotor speed of the wind turbine varying with the wind speed.

$3\mathrm{.}3.$ Mention three $(3)$ advantages and three $(3)$ disadvantages of this wind turbine generator technology.

$[6]$

TOTAL

$[50]$