On-off control which is a special case of proportional control, has a band width of about _____________ percent?
Correct answer: D. 0
- A. 100
- B. 75
- C. 25
- D. 0
Explanation
An on-off controller has only two output states and changes state abruptly at the set point, corresponding to an ideal proportional controller with zero proportional band. Hence its band width is 0%.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Process Control and Instrumentation
254 free Process Control and Instrumentation MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Process Control and Instrumentation questions
Nitrogen gas constant volume thermometer is suitable for measuring a temperature of _____________ °C?
Mercury thermometer can be used to measure the temperature upto ____________ °C?
Temperature of _____________ cannot be measured by an optical or radiation pyrometer?
Mcleod gauge is used to measure the __________________?
Change of angle of refraction with composition comprises the working principle of a___________________?
Working principle of mercury in glass thermometer is based on the ______________ of mercury with increase in temperature?