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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 2
26.
A sinusoidal variation in the input passing through a linear first order system
becomes more oscillatory (frequency increases).
becomes less oscillatory (frequency decreases).
gets amplified (magnitude increases).
gets attenuated (magnitude decreases).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Nitrogen gas constant volume thermometer is suitable for measuring a temperature of __________ °C.
0-100
< 0
> 100.
> 50
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
What is the overall transfer function (C/R) of the following block diagram if G = G1. G2. G3 and H = H1.H2.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
Pick out the most suitable instrument for measuring temperature in the range of-40 to 425°C.
mercury thermometer
bimetallic thermometer
radiation pyrometer
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Accurate temperature measurement performance of a radiation pyrometer can not be affected, if the
enhancement or attentuation of redia-tion occurs in the sighting path.
object and surrounding are at almost the same temperature.
object has varying emissivity.
object is transparent.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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