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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 5
21.
Thermistors are used in __________ devices.
voltage measuring
temperature measuring
temperature compensating
both(b)&(c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
__________ is the static characteristics of an instrument,
Response
Tine lag
Drift
dynamic error
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Phase lag of the frequency response of a second order system to a sinusoidal forcing function
is 30°
is 90° at the most
approaches 180° asymptotically
is 120°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Dead zone in an instrument must be less than __________ percent of the scale.
0.2
1.5
4
8
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Emission spectroscopy is used for
solids and metal analysis.
determining water purity.
determination of CO2 in gases.
NOxdetermination.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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