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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 7
6.
Reference points i.e., ice point and steam point in Reaumer temperature scale are respectively
- 273° & 80°
0° & 80°
32° & 460°
32° & 80°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Which of the following is not a composition measuring instrument ?
Thermal conductivity cell
Mass spectrometer
Polarograph
Hot wire anemometer
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Emf developed by a thermocouple while measuring a temperature of 800°C is about 31 mV. The type of thermocouple used is
chromel-alumel
iron-constantan
platinum-platinum+rhodium
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature ?
Chromel-alumel
Iron-constantan
Platinum-platinum + rhodium
Copper-constantan
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Platinum resistance thermometer is the international standard for temperature measurement between
triple point of hydrogen and freezing point of antimony
13.81°K to 903.9°K
both (a) and (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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