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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 6
6.
Which of the following thermocouples has the widest temperature measurement range ?
Iron-constantan
Chromel-alumel
Copper-constantan
Platinum-platinum/rhodium
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are
air to open valve with the controller direct acting.
air to close valve with the controller indirect acting.
air to open valve with the controller indirect acting.
air to close valve with the controller direct acting.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Bourdon tube is never made of
phosphor bronze
monel metal
stainless steel
cast iron
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
"An emf of the order of mV is generated when two solutions of different hydrogen ion concentration are separated by a thin glass wall". This is the working principle of a
pH meter
polarimeter
chromatograph
polarograph
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Pick out the symbol for "locally mounted instrument" in instrumentation diagram.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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