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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 5
31.
Thermal conductivity cell is the primary element of a/an __________ analyser.
oxygen
carbon dioxide
carbon monoxide
sulphur dioxide
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Zirconia probe is used for the measurement of
humidity of air.
% CO2 in flue gas.
% O2 in flue gas.
speed of a submarine.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches
-1
0
1
∞
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
__________ type of element is normally not used in the bimetallic thermometers.
Flat spiral
Bourdon tube
Single helix
Multiple helix
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Suppose that the gain, time constant and dead time of a process with the following transfer function:Gc(s) = 10 exp( - 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as
8, 0.6, 0.08
12, 0.6, 0.12
8, 0.6, 0.12
12, 0.4, 0.08
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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