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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 4
6.
The open loop transfer function of a process is . In the root locus diagram, the poles will be at
-1, -4
1, 4
-2, -3
2, 3
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Water is entering a storage tank at a temperature T0 and flow rate Q0 and leaving at a flow rate Q and temperature T. There are negligible heat losses in the tank. The area of cross-section of the tank is A0. The model that describes the dynamic variation of temperature of water in the tank with time is given as :
Q0(T0 - T) = Ac .
Q0T0 - QT = Ac .
Q(T0 - T) = Ac .
Q(T0 - T) = Ac .
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
When a bare thermocouple is covered by a protective sheath, the response becomes
faster and oscillatory.
faster and non-oscillatory.
slower and oscillatory.
slower and non-oscillatory.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple ?
0.1
3
13
29
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Helium gas constant volume thermometer is suitable for the measurement of a temperature of __________ °C.
< 100
< 0
> 0
> 800
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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