(a) Explain with the aid of a block diagram, the operation of a closed
loop system.
(b) Classify the following into open and closed loop system:
(i) water heater;
(ii) electric pressing iron;
(iii) remote control device;
(iv) microwave oven;
(v) switch.
The expected answers were:
(a)
In a closed loop control system, part of the output is used to effect changes of the controlled variable.
(b)
Open loop |
Closed loop |
Water heater |
Electric pressing iron |
Remote control device |
Microwave oven |
Switch |
|