Question 7
- List two:
- components of a servo system;
- signals in a closed loop control system.
- Convert the binary 10100100 to its hexadecimal equivalent.
- Perform the following binary operations:
The expected responses were:
(a) (i) Components of a servo system
- Comparator
- Actuator/amplifier
- Servomotor
- Feedback element
(ii) Signals in a closed loop control system
- Input /reference signal
- Output signal
- Feedback signal
(b) A4
(c) (i) 1100102
. (ii) 1002
The Chief Examiner reported a fair performance of candidates in part (a), poor responses from candidates in part (b) and very good performance by majority of the candidates in part (c).