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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 3
16.
An ideal PID controller has the transfer function . The frequency at which the magnitude ratio of the controller is 1, is
0.5/0.2
0.2/0.5
0.2 x 0.5
1/0.2 x 0.5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
The deflection of the free end of the bimetallic strips in a bimetallic thermometer with temperature is nearly
linear
non-linear
parabolic
hyperbolic
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Alphatron measures pressure __________ microns.
< 1
< 3
> 3
< 0.1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system ?
1
>1
< 1
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
The unit step response of the transfer functionreaches its final steady state assymptotically after
a monotonic increase.
a monotonic decrease.
initially increasing and then decreasing.
increasing decreasing and then increasing.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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