QUESTION $1[15]$

The iron is a typical example of a control system in our households.

$1\mathrm{.}1.$ Identify whether the iron represents an open$-$loop or closed$-$loop system.

$1\mathrm{.}2.$ For the following components of the iron, specify whether they function as the

controller, plant, sensor$,$ or actuator:

Heating element

Thermostat

Soleplate $($surface of the iron$)$

$1\mathrm{.}3.$ Identify the controlled variables in the iron control system.

$1\mathrm{.}4.$ Draw a functional block diagram of the iron's control system, representing all the

identified elements.