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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 3
21.
A process is initially at steady state with its output y=l for an input u=l. The input is suddenly changed to 2 at time t=0. The output response is y(t)=1+2t. The transfer function of the process is
2/s
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
The term analogous to the electrical current in a thermal system is the
temperature difference
heat flow rate
heat content in the system
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Reset rate is the another term used for __________ time.
dead
integral
derivative
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Continuous measurement of moisture in paper is done by
sling psychrometer.
hair-hygrometer.
weighing.
high resistance Wheatstone's bridge circuit.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Psychrometer determines the
humidity of gases
moisture content of solids
water of crystallisation
hygroscopic nature of solids
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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