Drawbacks of proportional control

Q.  Which of the following is/are the drawback/s of proportional control?

1. Proportional control system is complicated and costly.
2. Proportional control system is not suitable for pressure temperature and flow control problems
3. If there are sudden disturbance, the proportional control system takes time to stabilize.
- Published on 15 Sep 15

a. (1)
b. (2)
c. (3)
d. (1), (2) and (3)

ANSWER: (3)

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