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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 5
46.
Thermal wells used in temperature measurements should have
very thick walls.
low emissivity.
polished surface.
high transmissivity of radiation.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Which of the following flow-metering instru-ments is an areameter ?
Venturimeter
Rotameter
Pitot tube
Hot wire anemometer
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Out of the following themocouple wire insulating material, the highest temperature rating is for
teflon
ceramic fibre
asbestos
fibre glass
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Which is the most suitable instrument for measuring pressure below 3 microns ?
Mcleoid gauge
Alphatron
Ionisation gauge
Bourdon guage
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Routh stability method uses __________ loop transfer function.
open
closed
either (a) or (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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