Chemical Engineering - Process Control and Instrumentation
Exercise :: Process Control and Instrumentation - Section 1
41. |
The symbol for "capillary line" in instrumentation diagram is |
Answer: Option B
Explanation:
|
42. |
__________ is undesirable in thermocouples used in industries, |
A. |
Linear relation of emf to temperature | B. |
Corrosion resistance | C. |
Oxidation resistance | D. |
Non-linear relation of emf to temperature |
Answer: Option D
Explanation:
|
43. |
Select the correct statement from the following. |
A. |
The frequency response of a pure capacity process is unbounded. | B. |
The phase lag of a pure time delay system decreases with increasing frequency. | C. |
The amplitude ratio of a pure capacity process is inversely proportional to frequency. | D. |
The amplitude ratio of a pure time delay system increases with frequency. |
Answer: Option C
Explanation:
|
44. |
For an input forcing function, X(t) = 2t2, the Laplace transform of this function is |
Answer: Option D
Explanation:
|
45. |
Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a |
A. |
thermocouple | B. |
reistance thermometer | C. |
mercury in glass thermometer | D. |
vapor pressure thermometer |
Answer: Option A
Explanation:
|