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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 3
31.
The response of two tanks of same size and resistance in series is
under damped
critically damped
over damped
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
The frequency response of a dynamic element shows a constant magnitude ratio at all frequencies. The element exhibits a negative phase shift at all frequencies. The absolute value of the phase shift increases linearly with frequency. The element has the transfer function
e-τs
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
The amplitude ratio for the sinusoidal response of __________ is < 1.
transportation lag
first order system
second order system
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Which of the following is a 'contact' pyrometer ?
resistance pyrometer
optical pyrometer
radiation pyrometer
infra red pyrometer
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Which of the following is not a speed measuring instrument ?
Psychrometer
Stroboscope
Tachometer
All (a), (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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